Provided herein are methods and compositions that include a method comprising providing an annulus between a first tubing and a second tubing; providing an aqueous-based insulating fluid that comprises an aqueous base fluid, a water-miscible organic liquid, and a layered silicate; and placing the aqueous-based ins...

Systems for synchronizing downhole subs are disclosed. Some system embodiments may include a first downhole sub including a clock signal generator configured to generate an unmodified clock signal. The first downhole sub may also include a modification circuit configured to modify the clock signal. The system may al...

A variable flow resistance system can include a vortex device, with resistance to flow of a fluid composition through the vortex device being dependent on a rotation of the fluid composition at an inlet to the vortex device. Another system can include a second vortex device which receives a fluid composition fr...

Methods and compositions that comprise sub micron alumina for accelerating setting of a cement composition. An embodiment includes a method of cementing in a subterranean formation. The method may comprise introducing a cement composition into the subterranean formation wherein the cement composition comprises hydra...

Pulse telemetry systems and methods for communicating digital data from a wellbore to a surface unit are presented that include a valve fluidly coupled to drilling fluid. The valve adjusts pressure in a drillpipe to cause pressure transitions within the drilling fluid within the drillpipe to transmit data over the d...

A method of fabricating a sand control screen assembly includes determining an anatomy of a facsimile sand control screen assembly the sand control screen assembly including one or more component parts. A virtual three dimensional (3D) model of the facsimile sand control screen assembly is then generated based on th...

Cementing compositions are provided that comprise water, cement kiln dust, vitrified shale, zeolite, and/or amorphous silica, that utilize a packing volume fraction such that the solid particulate materials of the fluid are in a hindered settling state. Methods of cementing are provided that utilize compositions ...

Systems and methods that utilize bremsstrahlung radiation may be used to facilitate the setting of a settable composition. For example , a method may include providing a settable composition in a portion of a wellbore penetrating a subterranean formation , a portion of the subterranean formation , or both; conveying...

Apparatuses and methods are described such as for aligning downhole measurements. Apparatuses and methods include an arrangement of at least two tilted transmitters and at least one tilted receiver along a longitudinal axis of the tool. A first and second plurality of azimuthal measurements are processed to provide...

Systems and methods for optimized well creation in a shale formation are described herein. The method includes determining a first planned stimulation location (107) within the formation based on a pre- determined model of a formation. A borehole is drilled using a bottom -hole assembly (204) with LWD/MWD section (2...

A method for making a sealing element for a rotating control device used in rotary drilling systems is disclosed. The sealing element has a bore, a base region , and a nose region. The method comprises providing a mold for the sealing element for the rotating control device , adding fibers at a first concentration t...

The present invention provides a method for manufacturing a PNbZT thin film having higher piezoelectric characteristics and dielectric characteristics, with the respective compositions within the film being substantially uniform. This method for manufacturing the PNbZT thin film includes: a step for preparing a plur...

The present invention relates to a diverter tool used in a pipe string used to lower a liner and a cutting apparatus on the end thereof into a partially cased wellbore. The diverter tool has a diverter body that defines a longitudinal flow passage and has the diverter ports defined therethrough to communicate a dril...

A sand control screen assembly (40) includes a base pipe (44) having a plurality of openings (45) in a sidewall portion thereof and a swellable material layer (46) disposed exteriorly of the base pipe (44) and having a plurality of openings (47) that correspond to the openings (45) of the base pipe (44). A plurali...

A method of selectively controlling flow through a well screen can include installing the well screen in a wellbore and then exposing the well screen to an aqueous fluid thereby permitting flow through the well screen. A well screen assembly can include a well screen and an acid containing structure which dissolves ...

A fluid flow, control apparatus (100) for controlling the inflow of production fluids from a subterranean well includes a fluid discriminator section (104) and a flow restrictor section (106) that is configured in series with the fluid discriminator section (104) such that fluid must pass through the fluid discrimin...

An example method includes performing validation testing on a tool using a plurality of reference fluids the tool having a calibrated optical sensor installed therein that includes one or more optical elements. One or more tool sensor responses from the calibrated optical sensor may be obtained and pre processed and...

A method comprising: selecting a first injection rate for injecting an acidizing fluid into a subterranean formation; calculating a first objective function based on the first injection rate; selecting a second injection rate for injecting the acidizing fluid into the subterranean formation; calculating a sec...

A hydrocarbon industry servicing fluid comprises an irradiated fluid that is biologically inert. The fluid may be irradiated with ultraviolet light. A method comprises performing a hydrocarbon industry service operation with an irradiated fluid that is biologically inert. The method may comprise disposing of the irr...

An example telemetry signal detection apparatus may include a optical splitter a light source optically coupled to the optical splitter and a light detector optically coupled to the optical splitter. The apparatus further may include a reference loop optically coupled to the optical splitter and a sensor loop optica...

An improved liner hanger system is disclosed. The improved liner hanger system comprises a liner hanger positioned within a casing. The liner hanger comprises a spiked portion having one or more spikes wherein the spikes comprise a flat portion. At least one of the one or more spikes is expandable and the flat porti...

Apparatus and systems include a magnet assembly comprising a central magnet having a first axial end and a second opposite axial end; a first end piece magnet having a proximal end and a distal end the proximal end spaced apart from the first axial end of the central magnet; and a second end piece magnet spaced apar...

An illustrative seismic while drilling system includes a drill string having at least one seismic sensor that can be employed to detect seismic signals during pauses in the drilling process e.g. when extending the length of the drill string. An embedded processor digitizes a signal from the seismic sensor to obtain ...

A downhole fluid flow control system includes a fluidic module (150) having a main fluid pathway (152) a valve (162) and a bridge network. The valve (162) has a first position wherein fluid flow through the main fluid pathway (152) is allowed and a second position wherein fluid flow through the main fluid pathway (1...

Methods and tools for detecting casing position downhole is presented. The method utilizes electromagnetic (EM) tools with tilted antenna systems to detect casing position. Sometimes titled antenna designs also increase EM tools sensitivity to formation parameters which can lead to false signals for casing detection...

Apparatus and methods for autonomously controlling fluid flow in a subterranean well are presented and in particular for providing a fluid diode to create a relatively high resistance to fluid flow in one direction and a relatively low resistance to fluid flowing in the opposite direction. The diode is positioned in...

An apparatus and method are described for autonomously controlling flow of fluid in a subterranean well where fluid flow is controlled based on a fluid characteristic such as viscosity or density which changes over time. Fluid flows into a vortex assembly where a centrifugal force is imparted to the fluid. A less vi...

A fiber optic splice housing and integral dry mate connector system. In a described embodiment, a fiber optic connection system includes optical fiber sections in respective conduit sections. Each of the conduit sections is received in the housing assembly. An optical connection between the optical fiber sections is...

A fiber optic splice housing and integral dry mate connector system. In a described embodiment, a fiber optic connection system includes optical fiber sections in respective conduit sections. Each of the conduit sections is received in the housing assembly. An optical connection between the optical fiber sections is...

The present invention relates to cement compositions and their use in cementing operations. The cements comprise an aluminosilicate; a sodium aluminate a calcium aluminate a potassium aluminate or a combination thereof; and water. In some cases the cement does not include Portland cement. The cement may be used in a...

An apparatus and method autonomously controls fluid flow in a subterranean well as the fluid changes in a characteristic such as viscosity over time. An autonomous reciprocating member has a fluid flow passageway there through and a primary outlet and at least one secondary outlet. A flow restrictor such as a viscos...

According to an embodiment an exit assembly comprises: a fluid inlet; an exit chamber; a fluid outlet wherein the fluid outlet is located within the exit chamber; and a fluid diverter wherein the fluid diverter is connected to the fluid inlet and the exit chamber wherein a fluid is capable of flowing from the fluid ...

A method for acidizing a subterranean formation is disclosed. The method includes using an acid to lower the pH of a fluid within a subterranean formation. The method further includes reacting exothermic reaction components in the fluid within the subterranean formation to heat the subterranean formation. The me...

According to an embodiment a device comprises: a torsion lock sleeve wherein the torsion lock sleeve comprises a crenellated second end wherein the torsion lock sleeve is tubular in shape and wherein at least a portion of the inner circumference of the torsion lock sleeve engages at least one ridge; and a release nu...

A method and system to compensate for inaccuracies in cross well tomography is presented. The method includes obtaining data from at least two receivers in response to transmissions from at least two transmitters. Next at least one compensated value is derived based on the responses of the receivers to the transmitt...

The present disclosure relates to systems and methods for stabilizing portions of a subterranean formation, including portions of a subterranean formation having unconsolidated particulates, using a consolidating agent comprising polyamino-fictionalized nanoparticles. Methods in accordance with the present discl...

A wellbore subassembly is provided that includes a device having a production flow path toward a production tubing. The production flow path can include a superhydrophobic coating for restricting the production of an unwanted fluid towards the production tubing.

A drilling assembly control system is designed to control drill bit orientation such that a well path is followed that minimizes oscillations and deviations. When a deviation from the intended well path is detected a predictive module models the deviated path. Using the modeled path an optimization module utilizes a...

Disclosed are systems and methods for monitoring drilling fluids in real time. One method includes circulating a drilling fluid into and out of a borehole generating a first output signal with a first optical computing device arranged near an outlet of the borehole the first optical computing device having a first i...

Methods and apparatuses for determining surface wetting of a rock material with changing well fluids. In general the methods according to the invention include measuring electrical impedance spectroscopy ("EIS") for a system simulating downhole conditions for the wetting of a surface. Methods and apparatuses for mak...

The present invention discloses a well tool can include a flow path, and a flow blocking device which selectively prevents flow through the flow path. The device can include an anhydrous boron compound. A method of constructing a downhole well tool can include forming a structure of a solid mass comprising an anh...

Disclosed are systems and methods for measuring the gas content in drilling fluids in real time using optical computing devices. One system includes a flow path circulating a drilling fluid into and out of a borehole during drilling operations a first optical computing device arranged at or near an outlet of the bor...

A particulate suspending agent may be useful for mitigating particulate settling in wellbore applications with high temperature and/or at near neutral and higher pH values. Methods of treating a wellbore may include providing a treatment fluid comprising an aqueous liquid a plurality of particulates and a particulat...

A down hole packer is provided for positioning in a wellbore to establish a seal with a surrounding surface. The packer includes a sealing element that is responsive to compression by a setting piston to radially expand into the wellbore. An actuator is provided to longitudinally move the setting piston in response ...

In one example an integrated well survey management and planning tool is implemented by a computer system. The tool can receive survey data describing a well being drilled from a surface to a subterranean geological target to be reached by drilling the well. The well is associated with a target trajectory on which t...

A well detection system includes a signal generator module and a detector module. Signal generator module is coupled to a well structure and causes the well structure to emit a signal. The emitted signal is measured by the detector module. Based on measurements of the signal the detector module can determine informa...

In some embodiments an apparatus and a system may include a substantially flat mounting plate having a first inset portion to receive a circuit board and a second inset portion to receive an electronic component. A lower level of the second inset portion defines the first end of a post extending in a vertical direct...

A flow control device can include a surface that defines a chamber and includes a side perimeter and opposing end surfaces, a greatest distance between the opposing end surfaces being smaller than a largest dimension of the opposing end surfaces, a first port through one of the end surfaces, and a second port ...

In one example an integrated well survey management and planning tool is implemented by a computer system. The tool can receive a trajectory of a proposed well from a surface to a subterranean geological target to be reached by drilling the well and a survey plan indicating the number position and survey type of sur...

Disclosed are apparatus and methods for completing a wellbore using expandable tubular to form a sealed connection. More particularly embodiments of the present invention relate to forming a seal between a radially expanded tubular and a receptacle wherein annular shaped radially extending protrusions are present be...

The present invention provides a stabilized emulsion composition comprising: an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and an emulsion stabilizing agent, wherein the emulsion stabilizing agent comprises a first ionic compound soluble in the oleaginous fluid or the ...

An acoustic ranging system utilizes gradiometric data to determine the distance between a first and second well without any knowledge or involvement of the borehole or formation characteristics. An acoustic signal is generated from a downhole or surface source propagated along a first well and then received by recei...

A flow control assembly can be disposed in a wellbore and can include a membrane that can be perforated in response to a pressure such as a setting pressure from an inner area of a tubing. Subsequent to the membrane being perforated fluid can be allowed to flow from an area external to the tubing to an area internal...

A method and apparatus for charging a bulk energy storage capacitor such as used for actuating solenoids in downhole tools. An electrical generator which may be a mud powered provides a rectified voltage proportional to its rotational speed. The rectified voltage is fed to a single ended primary inductor converter w...

A well screen assembly for a wellbore includes a base pipe and a filter assembly carried on the base pipe. The filter assembly has an internal passage in fluid communication with an opening through the base pipe. A swell material is carried in the base pipe between the filter assembly and the base pipe. The swell ma...

A downhole fluid flow control system (100). The downhole fluid flow control system (100) includes a flow control component (122) having an internal flow path (134) and a temporary sealing substance (136) disposed within the internal flow path (134). During installation of the downhole fluid flow control system (100)...

A down-hole packer is provided for positioning in a wellbore to establish a seal with a surrounding surface. The packer includes a sealing element that is responsive to compression by a setting piston to radially expand into the wellbore. An actuator is provided to longitudinally move the setting piston in respon...

Wellbore flow control devices can be used in various subterranean operations to regulate access of formation fluids to the interior of a wellbore pipe and/or to limit the access of unwanted fluids thereto. Coupling of flow regulating assemblies to one another in the wellbore flow control devices can result in improv...

A method for optimizing deposit production in a well includes localizing the low resistivity fluid deposits in a geological formation. Once the deposits are mapped production of the fluid deposit from the geological formation is optimized based on the localizing. The optimization may include adjustment of at least o...

A fluid discrimination system can include a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows the selection being based on a direction of flow of the fluid composition through the discriminator and the direction being dependent on a fluid type in the fluid compos...

Apparatus systems and methods may operate to couple a power supply to a ground point associated with a well and to a lower portion of a conductive casing disposed within the well where the lower portion of the conductive casing is separated by an insulating gap from an upper portion of the conductive casing the uppe...

Methods and systems are described that can be used for locating conductive bodies such as wellbore casing or piping disposed below the earth s surface. An electrical current can be excited in a conductive body in each wellbore in a given area to produce a magnetic field and the magnetic field can be detected by a ra...

A wellbore ranging system includes a processor a memory and a wellbore ranging module. The wellbore ranging module is operable to receive survey information in response to a survey measurement signal and determine a location of a first wellbore in a formation. The wellbore ranging module is further operable to recei...

Embodiments including methods comprising providing a wellbore in a subterranean formation having a wellbore length; providing a proposed cement slurry formulation; calculating a normalized pressure at a point along the wellbore length based on properties of the proposed cement slurry formulation and properties of th...

Variable flow resistance systems can be used to regulate fluid flow in various applications particularly within a subterranean formation. A variable flow resistance system can comprise a chamber configured to induce rotational motion of a fluid flowing therethrough a fluid inlet coupled to the chamber and a fluid ou...

A method includes providing a cementing composition that includes an aqueous fluid a cementitious particulate and a copolymer particulate which includes a monofunctional monomer a water degradable first crosslinker and a second crosslinker. The method further includes placing the cementing composition in a subterran...

A controlled swell- rate swellable packer comprises a mandrel; a sealing element, and a jacket. The sealing element is disposed about at least a portion of the mandrel , and the jacket covers at least a portion of an outer surface of the sealing element. The jacket is configured to substantially prevent fluid commun...

A communication system can include a first subsystem of a well tool that can include a first cylindrically shaped band positioned around the first subsystem. The first cylindrically shaped band can be operable to electromagnetically couple with a second cylindrically shaped band. The communication system can also in...

A method and apparatus for ranging from ahead of a drill bit is described. The ranging apparatus includes a ranging probe with at least one sensor that may be deployed ahead of the drill bit. The ranging probe may be conveyed via a cable through the interior of a drill string. In an alternative embodiment the rangin...

A well drilling system can include a hydraulics model which determines a modeled fluid friction pressure and a calibration factor applied to the modeled friction pressure, and a flow control device which is automatically controlled in response to a change in the calibration factor. A well drilling method can includ...

A well screen is constructed by positioning a crimp ring encircling and over an end of a wrapped on pipe screen layer on a tubular base pipe. The crimp ring is plastically deformed about an outer surface of the screen layer. A bead of weld is applied to affix the crimp ring to the base pipe.

An example apparatus may include a solenoid actuator with a solenoid coil and a corresponding solenoid armature. A plurality of switches may be coupled to the solenoid coil. A controller may be electrically coupled to the plurality of switches the controller having a processor and a memory device coupled to the proc...

A sand control screen assembly (40) is operably positionable within a wellbore (50). The sand control screen assembly (40) includes a base pipe (42) having a plurality of openings (46) in a sidewall portion thereof and an internal flow path (44). A plurality of radially extendable filter members (52) are each oper...

A method of determining rheological properties can include dispensing a fluid into a rheometer including a stator having at least one helical blade, measuring torque (T) due to relative rotation between the stator and a rotor of the rheometer at different rotational speeds (RPM"s), calculating shear stress (SS) a...

Various embodiments include apparatus and methods of operation with respect to well logging. Apparatus and methods can include a tool having an arrangement of spaced apart transmitter antennas and receiver antennas in transmitter receiver antenna pairs to make shallow measurements and deep measurements. The signals ...

A sand control screen assembly (40) is operably positionable within a wellbore (48). The sand control screen assembly (40) includes a base pipe (42) having at least one opening (60) and an internal flow path (44). A swellable material layer (46) is disposed exteriorly of the base pipe (42). A fluid collection suba...

A drilling system comprising a drill string; and a ranging tool mounted on the drill string the ranging tool comprising a magnetic sensor pair comprising a first magnetic sensor and a second magnetic sensor mounted radially opposite one another on the ranging tool wherein each of the magnetic sensors is structured a...

Various embodiments include apparatus and methods to operate a tool downhole in a well where the tool has an optical computation element to determine different properties of downhole structures. Such an optical computation element can be structured to provide optical analysis of fluid and material composition of the...

A flow control system for use with a subterranean well can include a flow chamber through which a fluid composition flows and a closure device which is biased toward a closed position in which the closure device prevents flow through the flow chamber. The closure device can be displaced to the closed position in res...

A tool string carrying an external tool, such as a liner hanger , on a release mechanism is lowered into the wellbore. Interlocking lugs and J -slot profile , defined between the exterior surface of the mandrel and interior surface of the release mechanism , allow relative movement of release mechanism and mandrel w...

The present disclosure describes measuring bending moments within a drillstring or tool string to identify deflections (or dog legs) within the string. In some systems the bending moments a plurality of strain gauges. In some such systems the strain gauges will be arranged in a selected spacing around the circumfere...

A method and assembly to produce data pulses in a drilling fluid in a drill string. The assembly comprises a shear valve that includes a valve member mounted in a valve passage in fluid flow communication with a fluid flow conduit of a drill string to which the assembly is connectable. The valve member is connected ...

Systems and methods for digital signal processing are provided. A method includes mapping a symbol in a pulse sequence by using a pulse width and a pulse start in the symbol reading a message using a symbol value for each symbol in a string of symbols and modifying a drilling configuration according to the message. ...

A method of analyzing a subterranean formation is disclosed. A first signal is transmitted from a transmitter to the formation and a second signal which is a reflection of the first signal is received. A third signal which is the second signal reversed in time is then transmitted to the formation. A fourth signal wh...

Various embodiments include apparatus and methods to detect and locate conductive structures below the earth s surface. Tools can be configured with receiving sensors arranged to receive signals generated from a conductive structure in response to a current flowing on the conductive structure. Magnetic related value...

Embodiments relate to systems and methods for introduction of fluids comprising kiln dust into a wellbore through a bottom hole assembly. An embodiment discloses a method comprising: drilling a wellbore in a subterranean formation using a bottom hole assembly; and pumping a treatment fluid into the wellbore through ...

Additives that may be useful in preventing fluid loss in certain subterranean formations and associated methods of use are provided. In one embodiment, the methods of the present invention comprise: providing a low molecular weight crosslinkable polymer and a crosslinking agent capable of crosslinking the low molecu...

Fluid flow influencer devices in chambers subsequent to vortex assemblies are described. A flow affecting device can move from a first position to a second position based on a flow path of fluid flowing from the vortex assembly to the chamber. The flow path may depend on an amount of rotation of the fluid from the v...

A method of servicing a wellbore comprising inserting a first tubing member having a flowbore into the wellbore, wherein a manipulatable fracturing tool, or a component thereof, is coupled to the first tubing member and wherein the manipulatable fracturing tool comprises one or more ports configured to alter a flow ...

In some examples a drillstring includes a plurality of drill pipe sections that are coupled together by a drill pipe joint section structure. The drill pipe sections and the drill pipe joint section structure are acoustically impedance matched. In another example the drill pipe sections comprise a plurality of diffe...

Methods and compositions are provided that relate to cementing operations including a method of cementing that may comprise providing a settable composition that may comprise wollastonite, pumice, a calcium -ion source , and water , wherein the wollastonite may be present in an amount in a range of from about 25% to...

In accordance with embodiments of the present disclosure a gravel pack system includes a service tool used to maintain a pressure of the wellbore below a hydraulic packer at the same pressure of workstring tubing above the hydraulic packer prior to and during setting the hydraulic packer. The service tool includes a...

In some embodiments an apparatus and a system as well as a method and an article may operate to receive a derived clock signal downhole the derived clock signal being derived from a surface clock signal (associated with a surface clock) such that the frequency of the derived clock signal is less than the frequency o...

A system for ranging between a target well and a ranging well using unbalanced magnetic fields. The system comprises a current injection path associated with a target well casing. The current injection path is configured to generate a first magnetic field. A return path is coupled to the current injection path. The ...

A passive system for ranging between two wellbores where a distributed acoustic sensor system is deployed in a first wellbore and a drill bit in a second wellbore being drilled is utilized and an acoustic source to generate an acoustic signal for measurement by the distributed acoustic sensor system. The dynamic str...

A downhole fluid flow control system is operable to be positioned in a wellbore in a fluid flow path between a formation and an internal passageway of a tubular. The system includes a flow control component positioned in the fluid flow path that is operable to control fluid flow therethrough. The system also include...

Flow control devices can include functionalized surfaces on inner regions of walls. A functionalized surface can include a hydrophilic and/or a hydrophobic material that can affect fluid flowing in a flow path of a wall to facilitate fluid selection by the flow control device. Fluids may be switched in a flow contro...

Fluid flow influencer devices capable of affecting fluid flow for fluid selection are described. Fluid flow influencer devices may affect fluid flowing into a turbulence such as a vortex having a structure that is usable to restrict fluid flow in a flow path of a chamber by different amounts based on at least one pr...

Embodiments relate to the use of alkali aluminates and alkali silicates with cement kiln dust to form a settable composition for use in subterranean operations. An embodiment provides a method comprising: introducing a settable composition comprising cement kiln dust an alkali aluminate an alkali silicate and an ...

A liner installation system for use in a wellbore having a casing string disposed therein. The system includes a liner string having a liner hanger and a liner top and a setting tool having an expansion cone assembly and a locator cylinder. After running the liner string through the casing string such that at least ...

A multi- use thermal cup device is provided that includes a cup , a sensor , a thermometer , a user interface , and an electronic controller. The cup has at least one heating element disposed between its inner and outer walls. Electro- mechanical connection points are included on the outer wall of the cup and the el...

Device system and method embodiments provide fluid front monitoring via permanent casing mounted electromagnetic (EM) transducers. One or more casing strings have one or more transmit antennas that each encircle a casing string and one or more receive antennas that similarly encircle the casing string with at le...

A communication system for use in a wellbore can include a first cylindrically shaped band that can be positioned around a first outer housing of a first subsystem of a well tool. The first cylindrically shaped band can be operable to electromagnetically couple with a second cylindrically shaped band. The second cyl...

The present invention relates to hollow hydrogel capsules. In various embodiments the present invention provides a method of treating a subterranean formation with a hollow hydrogel capsule including a hydrogel shell including a hydrolyzed and crosslinked polymerized composition. The hollow hydrogel capsule also in...

A flow control system for use in a subterranean well can include a flow chamber through which a fluid composition flows and a plug which is released in response to an increase in a ratio of undesired fluid to desired fluid in the fluid composition. Another flow control system can include a flow chamber through which...

Apparatus systems and methods may include a magnetic dipole transmitter to be located in a ranging well. A voltage measurement device can include a plurality of probes where each probe is to be located on one of a target well the ranging well or a surface of a geological formation comprising the ranging well and ...

A sand control screen assembly (100) for use in a subterranean well. The sand control screen assembly (100) includes a base pipe (102) having an outer surface and at least one opening (104). A screen jacket (106) is disposed around the base pipe (102). The screen jacket (106) has a filter medium (112) and an outer s...

In accordance with some embodiments of the present disclosure an extrusion prevention ring for a liner hanger system is disclosed. The liner hanger includes an elongate body a first groove in the elongate body a first extrusion prevention ring disposed about the elongate body and selectively deformable between a fir...

Various embodiments include apparatus and methods to determine true formation resistivity. Such apparatus and methods may use techniques to effectively reduce or eliminate polarization horn effects at boundaries between formations of different resistivity. The techniques may use combinations of geosignals and adjust...

Compositions and methods for hydrocarbon exploration and production operations , such as subterranean cementing operations that allow for greater control over the setting of fluids or slurries used during such operations including placing a sealant composition having a polymerizable additive into a wellbore penetrat...

A tubular assembly comprises a wellbore tubular at least one shunt tube and a coupling assembly configured to rotatably couple the at least one shunt tube to the wellbore tubular. A method of coupling the tubular assemblies comprises coupling a first wellbore tubular to a second wellbore tubular wherein a first shun...

Certain aspects and embodiments of the present invention are directed an inflow control device tube that can be disposed in a wellbore through a fluid-producing formation. The inflow control device tube can include a body, such as a tubular body, and an inlet portion at a first end of the body. The inlet portion...

A flow control device comprises a fluid pathway configured to provide fluid communication between an exterior of a wellbore tubular and an interior of the wellbore tubular a flow restriction disposed in a fluid pathway a flow blockage disposed in the fluid pathway and a retaining member configured to maintain the fl...

A variety of methods and compositions are disclosed, including , in one embodiment, a method of cementing comprising: providing a settable composition comprising water and a cementitious component having a determined reactive index; and allowing the settable composition to set to form a hardened mass. ...

Tools , systems and methods for fast formation dip angle estimation ,at least some of which include a logging tool that includes at least one transmit antenna , at least one receive antenna and a controller. The controller measures coupling parameters between the transmit and receive antennas , with at least one of ...

Disclosed herein is a flow direction controlling layer for use in controlling the flow of fluids in subterranean well tools. The control layer comprises micro check valve arrays formed in the tool.

Of the many compositions and methods provided here, one method includes providing a drilling fluid comprising a lost circulation material and a base drilling fluid, wherein the base drilling fluid comprises an oleaginous continuous-phase and a polar organic molecule, wherein the base drilling fluid has a first norma...

An actuation device comprises a housing comprising one or more ports a magnetic valve component and a central flowbore. The central flowbore is configured to receive a disposable member configured to emit a magnetic field and the magnetic valve component is configured to radially shift from a first position to a sec...

A system to protect a downhole antenna from fluid penetration in some embodiments comprises a collar; a bobbin antenna mounted on the collar including multiple coil slots on an outer surface of the bobbin antenna and including one or more intra bobbin wireways between at least one of the coil slots and an outlet of ...

An example method for modeling a geological formation includes receiving a set of measurements from an electromagnetic logging tool and representing at least one characteristic of the geological formation as at least one continuous spatial function. At least one coefficient of the at least one continuous spatial fun...

Signal measurements collected by azimuthally sensitive electromagnetic logging tool as a function of position in a borehole are obtained. The signal measurements are used to identify a type of formation model. An inversion technique appropriate to the type of formation model is applied to the set of signal measureme...

Apparatus and methods to visualize formation properties and distances associated with formations can be implemented in a variety of applications. In various embodiments one or more visualization schemes and systems arranged to implement such schemes can use a combination of visual structures to provide information a...

Of the many compositions and methods provided herein, one method includes providing a drilling fluid comprising a base drilling fluid and a plurality of particulates, wherein the base drilling fluid without the particulates is characterized by N1(b) and wherein the base drilling fluid with the particulates is charac...

Various embodiments include apparatus and methods that use hand mobile communications device with respect to a drilling operation at a drilling site. Data with respect to one or more sensors downhole at a drilling site can be wirelessly received in the hand mobile communications device. Representations of the receiv...

Shunt tube flowpaths extending through swellable packers. A well system includes a packer assembly including a base pipe and an annular seal element which is swellable in response to contact with a selected fluid, and a shunt tube flowpath extending through the seal element for delivery of a slurry in a gravel packi...

Disclosed are spacer fluids comprising cement kiln dust ("CKD") and methods of use in subterranean formations.

A method of variably restricting flow in a subterranean well can include resisting the flow through a sidewall of a tubular string and then selectively opening a device in response to a predetermined pressure signal being transmitted. The opening of the device can substantially reduce a resistance to the flow throug...

A collar mountable antenna for transmitting and receiving signals in a downhole environment in at least some embodiments comprises a bobbin having an inner surface and an outer surface each of the inner and outer surfaces defining multiple slots conductive wire disposed within the multiple slots on the outer surface...

Locating while drilling systems and methods are disclosed. Some method embodiments include drilling a borehole with a bottom hole assembly (BHA attached to a drill bit pausing the drilling to determine a survey position of the bit obtaining measurements with BHA sensors while drilling processing the BHA sensor measu...

A downhole tool for use in a well has a mandrel with an expandable sealing element disposed thereabout. The mandrel has a head portion threadedly connected thereto. A shoulder in the head portion and an upper end of the mandrel define an annular space. A sleeve with a bore therethrough may be positioned in the annul...

Disclosed herein are cement compositions and methods of using set -delayed cement compositions in subterranean formations. A method of cementing in a subterranean formation , may comprise providing a set -delayed cement composition comprising water, pumice , hydrated lime , and a set retarder , activating the set- d...

The present invention relates to methods and compositions for treating a water and hydrocarbon producing subterranean formation with a relative permeability modifier and more specifically to improved treatment fluids methods for preparing treatment fluids and methods for use thereof in a subterranean formation. Meth...

A sand control screen assembly (300) includes a base pipe (302) having at least one opening in a sidewall thereof and a screen jacket positioned about the base pipe (302). The screen jacket includes a drainage layer (304) and a filter medium positioned about the drainage layer (304). The drainage layer (304) include...

A disclosed borehole curvature logging system includes: a drill string having a bottomhole assembly (BHA) with sensors providing actual deformation and bending moment measurements as a function of BHA position at spaced-apart intervals on the BHA; a processing system that retrieves said actual measurements and res...

Fluid analysis systems with Integrated Computation Elements (ICEs) or other optical path components formed using atomic layer deposition (ALD) enables improved tolerances and design flexibility. In some of the disclosed embodiments a fluid analysis system includes a light source and an ICE. The fluid analysis system...

Methods and compositions are disclosed that comprise cement kiln dust having a mean particle size that has been altered. An embodiment discloses a subterranean treatment method comprising: introducing a treatment fluid into a subterranean formation wherein the treatment fluid comprises cement kiln dust having a mean...

A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition; 10 introducing t...

A well screen assembly with enhanced well treatment capabilities. A well screen assembly can include a well treatment substance secured to the well screen assembly and at least one reactive component of a well treatment stimulant. The reactive component can also be secured to the well screen assembly. A method of tr...

Downhole ranging from multiple wellbores. In one example multiple transmitters and multiple receivers are disposed in multiple wellbores to exchange electromagnetic signals. By implementing a full compensation technique a computer system determines multiple compensated signals. A compensated signal is determined fro...

A cement composition for use in an oil or gas well, the cement composition comprises: a calcium aluminate cement; water; an organic acid; and a polymeric mixture comprising: (A) water; (B) citric acid; (C) a first polymer, wherein the first polymer: (i) comprises a cellulose backbone and carboxymethyl functional ...

A device for directing the flow of a fluid comprises: a pressure pocket; a first fluid passageway; a pressure source; and a pressure switch wherein the first fluid passageway operationally connects at least the pressure pocket and the pressure source and wherein the pressure switch is positioned adjacent to the pres...

A method of servicing a subterranean formation comprising providing a wellbore penetrating the subterranean formation and having a casing string disposed therein the casing string comprising a plurality of points of entry wherein each of the plurality of points of entry provides a route a fluid communication from th...

A downhole fluid flow control system (100). The flow control system (100) includes a flow control component (122) having direction dependent flow resistance created by a vortex chamber (144). Production fluids (140) that travel through the flow control component (122) in a first direction enter the vortex chamber (1...

A surface excitation ranging method includes installing a customized grounding arrangement for a power supply located at earth s surface wherein the customized grounding arrangement fulfills an impedance criteria or ranging performance criteria. The method also includes conveying an electrical current output from th...

A surface excitation ranging method includes selecting a first well with a metal casing as a target well and selecting a second well with a metal casing as a ground well. The method also includes installing a supplemental grounding arrangement for a power supply located at earth s surface wherein the ground well and...

A magnetic ranging system in some embodiments comprises: a wellbore in a formation; a conductive casing in said wellbore; and excitation and return electrodes electrically coupled to the conductive casing the excitation electrode positioned downhole relative to the return electrode the excitation and return electrod...

A method and apparatus are disclosed for drilling a wellbore using a concentric dual drill string. Multiple individually selectively isolable crossover ports intervaled may be provided along the length of the drill string thereby facilitating pumping a well control fluid within a wellbore annulus without the need to...

A method of installing a sealing ring onto a wire wrap screen comprising: providing the sealing ring wherein the sealing ring has an initial inner diameter greater than the outer diameter of an end of the wire wrap screen; reducing the inner diameter of the sealing ring wherein the reduced inner diameter of the se...

A downhole flow control system utilizes a tubing pressure operated valve to selectively open and close fluid flow across the system. The tubing pressure operated valve includes a piston responsive to tubing pressure and a valve element responsive to piston movement. The valve element can be moved rotationally longit...

A bypass assembly for use in a downhole tool comprises a chamber, a first fluid port in fluid communication with the chamber, a second fluid port in fluid communication with the chamber, a flow restrictor disposed in a first flow path between the first fluid port and the second fluid port, a piston moveable in a f...

A flow control device for control of fluid flow through a tubular member comprises a control chamber having a piston disposed therein, where the piston is moveable from an open piston position to a closed piston position by the application of a first fluid pressure, and a valve chamber having a valve therein, whe...

A release mechanism for use with a downhole component in a wellbore environment comprises a shifting sleeve disposed about a mandrel, where the shifting sleeve is torsionally locked with respect to the mandrel, a collet prop disposed about the mandrel and engaged with the shifting sleeve, where the engagement be...

According to an embodiment an exit assembly comprises: a first fluid inlet; a first fluid outlet; and at least one fluid director wherein the fluid enters the exit assembly in one direction in another direction or combinations thereof and wherein the at least one fluid director induces flow of the fluid rotationally...

A shock sensing tool for use with well perforating can include a generally tubular structure which is fluid pressure balanced at least one strain sensor which senses strain in the structure and a pressure sensor which senses pressure external to the structure. A well system can include a perforating string including...

A wellbore servicing apparatus, comprising a first mandrel movable longitudinally along a central axis and rotatable about the central axis, an orienting member configured to selectively interfere with movement of the first mandrel along the central axis, and a second mandrel connected to the first mandrel and confi...

A downhole coupling system for joining together two segments of a tool string includes two mandrels each having an interlocking interface at an end that abuts the adjacent mandrel and to communicate torque from one mandrel to the next. Each of the mandrels includes a threaded exterior surface with the threaded surfa...

Methods and compositions are disclosed that comprise interground perlite and hydraulic cement. An embodiment provides a method of cementing comprising: providing a settable composition comprising perlite hydraulic cement and water wherein the perlite and hydraulic cement are interground prior to combination with the...

A release system comprises a torsional lock sleeve disposed about a mandrel, and a collet prop engaged with the mandrel. The torsional lock sleeve and the mandrel are configured to substantially prevent rotational movement of the torsional lock sleeve 10 about the mandrel, and the torsional lock sleeve is configu...

Various embodiments include apparatus and methods to generate geosignal responses. Geosignal responses may be generated that include a representation of a determination of variation between a XX coupling component and a YY coupling component from acquired signals. Such geosignals may be used to 5 address a blindspot...

According to an embodiment, a method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, wherein the cement composition comprises: cement; water; and calcium silicate hydrate (C-S-H) seeds, wherein a test cement composition consisting essentially of: ...

According to an embodiment a composition is provided that can be used in a cementing. The composition includes at least: (i) a hydraulic cement; and (ii) a copolymer comprising at least the monomeric units (a) through (d) of formula (A); (a) A = H B = H CH (or) A = COOH B = H CH (b) D = NH C(CH) CH SOM Where M = Na ...

A well screen assembly includes a tubing including a center bore and at least one aperture through the tubing between an outer radial surface of the tubing and an inner radial surface of the tubing; a filtration screen positioned around the tubing; a housing positioned around the tubing and including a fluid chamber...

Boronated biopolymer crosslinking agents useful in producing viscosified treatment fluids that include an aqueous fluid, a base polymer, and the boronated biopolymer crosslinking agent, wherein the boronated biopolymer crosslinking agent comprises a biopolymer derivatized with a boronic acid, a boronate ester, o...

Systems and methods of down hole communication are disclosed which facilitate communication across a mud motor. The systems and methods can employ a hysteresis brake that selectively slows a turbine shaft to thereby produce local pressure pules in a drilling fluid in a predetermined pattern. The hysteresis brake can...

A downhole setting tool is provided. The tool comprises a tool housing and a hollow mandrel the mandrel being situated in the housing. The tool further comprises a piston situated between the mandrel and the tool housing and a collar situated between the mandrel and the tool housing wherein the tool housing the mand...

Certain aspects and features of the present invention are directed to an isolation assembly that can be disposed in a wellbore through a fluid-producing formation. The isolation assembly can include one joint of a tubing section, at least two inflow control devices, and an isolation element. The joint of the tubi...

A method can include applying a magnetic field to a well screen thereby varying sizes of pores via which fluid flows through the well screen. A well screen can include a magnetic shape memory material having a dimension which changes in response to application of a magnetic field. Restriction to flow through the wel...

A method of adjusting a pressure reduction to occur in a wellbore following firing of at least one perforating gun can include determining a desired free gun volume which corresponds to a desired pressure reduction in the wellbore resulting from firing of the perforating gun and varying a free gun volume of the perf...

In some embodiments an apparatus and a system as well as a method and an article may operate to advance a sampling and guard probe (100) with a surrounding sealing pad (108) against a borehole wall to adjust the size of the area associated with a fluid flow inlet of the probe where the size of the inlet area (104) i...

Of the methods provided herein is a method comprising: providing a clean up fluid comprising a peroxide generating compound and an aqueous base fluid; placing the clean up fluid in a subterranean formation; removing contaminants from at least a portion of the subterranean formation to form a cleaned portion of the f...

Certain aspects and embodiments of the present invention are directed to a porous medium screen that can be disposed in a wellbore through a fluid producing formation. The porous medium screen can include a porous medium and a retaining structure. The porous medium can be a material having one or more pores. The one...

Certain aspects and features relate to dehydrator screens that are inexpensively made wire mesh or stamped metal screens that can direct carrier fluid from a gravel pack slurry efficiently to one or more screens associated with a base pipe.

A variety of methods and compositions are disclosed including in one embodiment a method of cementing in a subterranean formation comprising: introducing a cement composition into a subterranean formation wherein the cement composition comprises cement water and a saponin; and allowing the cement composition to set ...

A wellbore servicing system (100) comprising a sleeve system (200) comprising a ported case (208) a sliding sleeve (260) within the case and movable between a first sleeve position in which the sleeve re stricts fluid communication via the case and a second sleeve position in which the sleeve does not a radially div...

A jumper tube for use with a shunt tube assembly comprises a first tubular member configured to engage a first shunt tube, a second tubular member axially disposed within the first tubular member , and a locking member configured to prevent the second tubular member from axially displacing into the first tubular mem...

A shunt tube assembly comprises a shunt tube and a jumper tube comprising a first end. The shunt tube comprises a non -round cross section, and the first end of the jumper tube is coupled to the shunt tube at a coupling. The first end of the jumper tube comprises a substantially round cross section at the coupling. ...

A shunt tube entry device comprises one or more inlet ports, a shroud disposed at least partially about a wellbore tubular, and a shunt tube in fluid communication with the chamber. The shroud defines a chamber between the shroud and the wellbore tubular , and the chamber is in fluid communication with the one or mo...

This invention relates to wellbore equipment utilized in conjunction with operations performed in subterranean wells and in particular , sand control screen assemblies providing secondary flow capabilities. Once sand control screen assembly includes a base pipe having an exterior surface and defining one or more per...

A fluid flow control device disposable in a bore can include channels that can direct fluid flow based on one or more properties of the fluid more robustly. The channels may include a side channel between two other channels. The side channel can allow fluid flow to affect fluid flowing in one of the channels. Device...

A method can include interconnecting a well tool in a well tool assembly with a shock mitigating connection the interconnecting being performed without threading and positioning the well tool assembly in a wellbore. A well perforating assembly can include at least two perforating devices a detonation train extending...

A flow control screen having a fluid flow path between the interior of a base pipe and a filter medium. A valve assembly including a piston body a valve plug and a ball retainer having an opening is disposed within the fluid flow path. The piston body has an internal seat and a collet assembly that is radially outwa...

Methods and systems for improving delivery and retrieval of fluids to and from a downhole location are disclosed. A dual string pipe (202) is provided which comprises an outer pipe (206), an inner pipe (204) positioned within the outer pipe , and a bottom hole assembly (210) fluidically coupled to the outer pipe and...

An expansion cone assembly (200) for setting a liner hanger. The expansion cone assembly (200) includes a cone mandrel (202) having an outer frustoconical surface (220), a lead cone (206) slidably disposed around the cone mandrel (200) hav ing a frustoconical surface (228) with a maximum outer diameter (230) and a...

Screen assemblies capable of being disposed in a wellbore for hydrocarbon fluid production are described. The screen assemblies can support tubes for receiving hydrocarbon fluid and reduce or eliminate plugging of the tubes by swellable material. A screen assembly may include a support material between a tube and...

A check valve assembly for well stimulation operations. The check valve assembly includes a valve body having an axially extending passageway including an inlet and a valve body seat. The valve body has a discharge port extending laterally from o the passageway. A valve cap slidably engages with the valve body and...

A shunt tube assembly comprises a plurality of shunt tubes a jumper tube and a coupling member configured to provide fluid communication between the jumper tube and the plurality of shunt tubes. The coupling member can comprise a first end and a second end. The coupling member may be configured to provide a sealing ...

The present disclosure relates to methods of laser leaching polycrystalline diamond (PCD) devices for performing such methods and to laser leached PCD and elements and drill bits containing laser leached PCD.

Modular actuators steering tools and rotary steerable drilling systems are presented herein. A modular actuator is disclosed for use in directing a drill string which includes a housing proximate a drive shaft. The modular actuator includes a cartridge that is configured to couple to the outer periphery of the housi...

A rotating control device can include an annular seal and a latch including a rotary cam and an engagement member which releasably secures the seal and/or a bearing relative to the housing such that rotation of the cam relative to the housing displaces the member. A method of latching an annular seal relative to an ...

An apparatus (100) for controlling the flow rate of a fluid during downhole operations. The apparatus (100) includes a tubular member (134) having a flow path (136) between inner and outer portions of the tubular member (134). The flow path (136) includes an inlet (138) in an inner sidewall (140) and an outlet (142)...

A flow control screen (100) includes a base pipe (102) having a blank pipe section (104) and a perforated section (106) . A filter medium (112) is positioned around a portion of the blank pipe section (104) . A housing (114, 118, 120, 122, 124) is positioned around another portion of the blank pipe section (104...

Treatment fluids for and methods of treating subterranean formations are provided. In certain embodiments, a method is provided comprising providing a treatment fluid comprising a relative permeability modifier, a delayed filter cake breaker, and a carrier fluid, contacting at least a portion of a filter cake in a s...

Methods and fluids are provided that include, but are not limited to, a drilling fluid comprising an aqueous base fluid and a fluid loss control additive that comprises at least one polymeric micro gel and a method comprising: providing an aqueous based treatment fluid comprising a fluid loss control additive that c...

An embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive, wherein the extended settable composition is capable of remaining in a pumpabl...

A drilling apparatus sensor system and method. The drilling apparatus includes a drill bit and a steering controller that steers the drill bit. The drilling apparatus includes a reluctance sensor system that measures changes in magnetic flux. The reluctance sensor includes two or more magnets creating a bucking effe...

A method for performing ranging measurements within a formation includes transmitting an asymmetric time varying signal from a transmitter (114) disposed within a borehole (106) in the formation. The asymmetric time varying signal may have a signal characteristic that is based at least in part on a downhole characte...

A system to optimize a drilling parameter of a drill string includes a drill string control subsystem. The system includes an optimization controller to coordinate operations of the drill string control subsystem during a drilling process at least in part by: determining a first optimized rate of penetration based o...

A downhole fluid flow control system having dynamic response to local well conditions. The system includes a tubing string operably positionable in a wellbore. Annular barriers are positioned between the tubing string and the wellbore to isolate first and second zones. A fluid flow control device is positioned withi...

An apparatus is presented for autonomously controlling fluid flow in a subterranean well the fluid having a density which changes over time. An embodiment of the apparatus has a vortex chamber a vortex outlet and first and second inlets into the vortex chamber. Flow into the inlets is directed by a fluid control sys...

Assemblies systems and methods to facilitate gravel packing of a wellbore having a flow restricting device are described. The assemblies systems and methods can include a flow restricting device and an alternative path gravel packing system to provide a gravel pack about the flow restricting device. The assemblies s...

Provided are methods that include a method comprising: providing a micro- crosslinked gel that comprises micro-domains; and placing the micro-crosslinked gel into a subterranean formation via a well bore penetrating the formation at a desired pressure. In another aspect, the invention provides compositions that incl...

A method of servicing a wellbore comprising placing downhole a composition comprising a surfactant package comprising a cationic surfactant and anionic surfactant, wherein the surfactant package when contacted with an aqueous solution forms a viscosified composition in the presence of less than about 30 wt.% of a hy...

An apparatus is described for controlling flow of fluid in a tubular positioned in a wellbore extending through a subterranean formation. A flow control system is placed in fluid communication with a main tubular. The flow control system has a flow ratio control system and a pathway dependent resistance system. The ...

Disclosed are spacer fluids comprising cement kiln dust ("CKD") and methods of use in subterranean formations. An embodiment discloses a method comprising: providing a foamed spacer fluid comprising CKD, a foaming agent, a gas, and water; and introducing the foamed spacer fluid into a well bore to displace at leas...

A gas extraction system for gas analysis is provided. The gas extraction system includes the use of a peristaltic pump for moving condensates to a liquid trap assembly. An improved fluid flow is thus provided which includes delivering condensate from a condensate separator to a peristaltic pump and delivering the co...

The disclosure provides a super abrasive element containing a substantially catalyst free thermally stable polycrystalline diamond (TSP) body having pores and a contact surface a base adjacent the contact surface of the TSP body; and an infiltrant material infiltrated in the base and in the pores of the TSP body at ...

Methods and compositions utilizing a drilling fluid comprising sub-micron precipitated barite having a weight average particle diameter below about 1 micron. Methods include a method comprising circulating a drilling fluid in a well bore, wherein the drilling fluid comprises: a carrier fluid; and a weighting agent t...

Systems and methods for controlling power distribution among various electrical loads disposed in a bore are described. Control modules that are associated with loads such that each load is associated with at least one control module. Each control module includes circuitry that can respond to a voltage at a level th...

A sealant composition comprising an inverse emulsion polymer and methods of servicing a wellbore using the same are disclosed. In one embodiment, a method of servicing a wellbore that penetrates a subterranean formation is disclosed. The method comprises placing a sealant composition comprising an inverse emulsion p...

Well screen fabrication. A method of fabricating a well screen Includes the steps of: providing a filter " portion having an inner dimension, and then increasing the inner dimension, the providing and increasing steps being performed prior to installing the well screen in a wellbore. Another method of fabricating a ...

An oilfield borehole device comprising a storage device including a first software image and a data structure, the data structure to include at least one of an address, a file identifier and a flag. The device further comprises a processor to download a second software image from a second storage device external to ...

Base cement compositions comprising particle-size distribution-adjusting agents, and methods of using such base cement compositions in subterranean operations and surface applications are provided. An example of a method comprises: providing a base cement composition comprising water, a hydraulic cement, a set retar...

A well system can include a generally tubular production string extending to a surface location. A production packer seals off an annulus external to the production string. A swellable packer is interconnected in the production string between the production packer and the surface location. A method of mitigating a l...

Inflow control devices for sand control screens. An inflow control device for restricting flow into a passage of "a tubular string .-in a wellbore includes at least two of . a flow restrictor section, a "fluid discriminator section and a reverse flow preventer section, and the inflow control device is configured so ...

This invention relates to electromagnetic resistivity logging systems and methods relating thereto which employ an antenna configuration having at most two transmitter or receiver antenna orientations that rotate relative to the borehole. The measurements made by this reduced-complexity antenna configuration enable ...

The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and combinations thereof. The settable compositions option...

The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and combinations thereof. The settable compositions option...

This invention relates to cooling apparatus, systems, methods and articles which operate to actively cool an electronic device using a first heat removing cooling element, and to induce a thermal gradient in a heat pipe by conducting heat from a hot side of the first heat removing cooling element to a cold side o...

A cementitious composition is provided comprising a hydraulic cementitious material, iron chloride and sufficient water to form a pumpable slurry. The iron chloride predictably enhances the rheology and performance of the composition. Methods of cementing subterranean wells are accomplished by mixing togethe...

In some embodiments, an apparatus for downhole operation includes a tool for a downhole operation. The tool includes a downhole power source to generate power. The tool also includes a cooler module to lower temperature based on the power.

An apparatus (100) for obtaining a plurality of fluid samples in a subterranean well includes a carrier (104), a plurality of sampling chambers (102) and a pressure source (108). The carrier (104) has a longitudinally extending internal fluid passageway (112) and a plurality of externally disposed chamber receiving ...

The location of a pig (26) in a conduit (10), e.g., an underwater pipeline, may be determined by measuring an amount of a fluid displaced by the pig from the conduit and calculating the location of the pig in the conduit based on that amount of fluid. In particular, the amount of the fluid displaced by the pig (2...

A pellet-shaped article inspection unit (10) is structured for use with a conveyer mechanism (12) having a plurality of carrier bars (24), each carrier bar (24) being structured to convey a plurality of pellet-shaped articles along a predetermined path. The article inspection unit (10) includes a first camera unit (...

A method of treating and completing a well includes positioning a downhole tool within a well. The downhole tool includes an elongated body (106) defining a central passageway (108) and including a plurality of production openings (110) and at least one frac opening, a frac mandrel (116) disposed within the central ...

A system for measuring the density and mass flow rate of a fluid stream. The system generally comprises a volumetric flow device, a momentum device, and a data processing device. The present invention also provides methods for using such system

Methods are provided for increasing the temperature of a section of conduit used for the production or transmission of hydrocarbon. According to one aspect, the method includes the steps of: (a) forming a treatment fluid comprising: (i) a carrier fluid; and (ii) a first reactant and a second reactant; and (b) introd...

Methods and systems for controlling the drilling of a borehole are disclosed. The methods employ the assumption that nonlinear problems can be modeled using linear equations for a local region. Common filters can be used to determine the coefficients for the linear equation. Results from the calculations can be used...

A rotary vector gear for controlling longitudinal axis offset about a central longitudinal axis is disclosed. The device uses single rotary motion through a rotary vector gear to produce hypotrochoidic offset similar to a flower petal and is capable or ready return to zero offset. The device may be used in downhole ...

The present invention described a resin composition comprising from about 5 % to about 30 % phenol, from about 40 % to about 70 % phenol formaldehyde, from about 10 to about 40 % furfuryl alcohol, from about 0.1 % to about 3 % of a silane coupling agent, and from about 1 % to about 15 % of a surfactant and methods o...

The present invention relates to subterranean operations, and more particularly, to settable fluids comprising particle-size distribution-adjusting agents, and methods of using such settable fluids in subterranean and surface applications. In certain exemplary embodiments of the present invention, the settable fluid...

This invention relates to a logging system and method with reduced usage of radioisotopic sources. Some embodiments comprise collecting at least one output logud training well bore from measurements with a radioisotopic source; collecting at least one input log of the training well bore from measurements by a non-ra...

This invention relates to a system and method having radially offset antennas for electromagnetic resistivity logging. The electromagnetic resistivity logging system and the method disclosed in the present invention employ magnetic dipole antennas embedded in wall-contacting surfaces. In some embodiments, the antenn...

A method of servicing a wellbore in a subterranean formation, comprising preparing a cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof, and placing the cemen...

The invention provides a method for producing guar gum, the method comprising the steps of: (a) sizing husk from guar seed into larger pieces and smaller pieces, (b) washing the larger pieces, (c) soaking the larger pieces, and (d) flaking the larger pieces to obtain guar gum. The invention also provides a method fo...

A pipeline tool for use within a pipeline comprises a too! body with an internal flow bore, a swellable component disposed about the tool body, and a temporary seal disposed internally of the flow bore. The pipeline tool may further comprise a tracking device attached to the tool body, wherein the tracking device co...

Cementing compositions aie provided that comprise water, cement kiln dust, vitrified shale, zeolite, and/or amorphous silica, that utilize a packing volume fraction such that the solid particulate materials of the fluid are in a hindered settling state. Methods of cementing are provided that utilize compositions com...

Of the many methods provided herein, a method comprising: (a) combining a corrosion inhibitor composition with an aqueous acid solution, the corrosion inhibitor composition comprising a benzylideneaniline compound corresponding to Formula 1 below: wherein R is H, methyl, ethyl, hydroxy, methoxy, ethoxy, bromo, chlo...

Casing or work string orientation indicating apparatus and methods. A system for indicating orientation of a structure in a wellbore includes an orientation indicating device responsive to fluid flow through the device, whereby fluid flow through the device at a selected flow rate produces a reduced pressure differe...

The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and combinations thereof. The settable compositions option...

A wellbore servicing composition is described comprising a metal oxide, a soluble salt and a viscosifier wherein the viscosifier comprises a quaternary amide, a quaternary amide ester, or combinations thereof. A method of servicing a wellbore in contact with a subterranean formation is also described, the method com...

A cement composition comprising water, a cement, and a fluid loss control additive, the fluid loss control additive comprising a graft copolymer. The graft copolymer comprises a backbone and at least four grafted monomers selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, ac...

The present invention relates to methods for treating subterranean formations. In one embodiment, the present invention provides a method of fracturing a portion of a subterranean formation that comprises providing a viscosified treatment fluid comprising a single salt aqueous fluid having a density of greater than ...

Inflow control devices for sand control screens. A well screen includes a filter portion and at least one flow restrictor configured so that fluid which flows through the filter portion also flows through the flow restrictor. The flow restrictor includes at least one tube which forces the fluid to change momentum wi...

An apparatus (300) for obtaining a fluid sample in .a subterranean well includes a housing (302) having a sample chamber (314) defined therein. The sample chamber (314) is selectively in fluid communication with the exterior of the housing (302) and is operable to receive the fluid sample therefrom. A debris trap pi...

Provided herein are compositions that include an aqueous-based insulating fluid that comprises an aqueous base fluid, a water-miscible organic liquid, and a synthetic polymer. In another embodiment, provided herein is a method of forming an aqueous-based insulating fluid comprising: mixing an aqueous base fluid and ...

A method of stimulating and stabilizing an area of a subterranean formation comprising placing an acid fluid into an area of a subterranean formation and allowing the acid to at least partially dissolve a portion of the area of the subterranean formation; placing a consolidation fluid into the area of the subte...

The present invention relates to a downhole positioning system anil relating thereto. In some embodiments, the system comprises a downhole source, an array of receivers, and a data hub. The downhole source transmits an electromagnetic positioning signal that is received by the array of receivers. The data hub collec...

The present invention relates to methods for stabilizing an unconsolidated or weakly consolidated zone of a subterranean formation. One embodiment provides a method of stabilizing a subterranean formation comprising the steps of placing a gelable liquid composition into the subterranean formation, wherein the gelabl...

The invention relates to acoustic telemetry transceiver. One embodiment includes an apparatus that includes a piezoelectric transducer to generate an acoustic signal that is to modulate along a mandrel, wherein the piezoelectric transducer includes at least one piezoelectric element and at least one electrode that i...

A downhole telemetry system for wired tubing which is a communication system employing discrete multi-tone ("DMT") modulated signals on a communications channel formed by inductively-coupled pipe. In one embodiment, the communications system includes a string of wired pipe joints that couple a transmitter to a ...

A system is provided that includes: (a) a mobile platform; (b) an input pump operatively connected to be capable of pumping a treatment stream through the system; (c) a centrifugal separator operatively connected downstream of the input pump to centrifugally treat the treatment stream; (d) a borate filter operativ...

A flow control apparatus (800) includes a tubular member (818) having a plurality of openings (820, 822, 824, 826) that allow fluid flow between an exterior and an interior flow path (828) of the tubular member (818) and a multi-stage flow restricting section (804) operably positioned in a fluid flow path between ...

Screen assemblies capable of being disposed in a bore for hydrocarbon fluid production are described. The screen assemblies can support filter mediums and reduce or eliminate plugging by swellable material. One screen assembly includes filter mediums supported by a rigid member located exterior to a portion of a ...

Assemblies that can be disposed in a subterranean bore are described. An assembly can include a fluid restricting member in a groove. At least a portion of the fluid restricting member can be removable from the groove after being exposed to an environment of the bore to form a bypass to a tubing valve. The fluid ...

A method of servicing a wellbore in a subterranean formation, comprising preparing a cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof, and placing the cement c...

A centralizer (100) including hollow structural components (110). In at least one embodiment, the hollow structural component is sealed by at least one valve or rupture disk (112). When unacceptable overpressures occur, the valve or rupture disks break to allow influx into the hollow element, thereby relieving press...

Methods comprising: providing a treatment fluid comprising: an aqueous base fluid and a gelling agent that comprises a nonnatural galactomannan; and placing the treatment fluid into the subterranean formation. Treatment fluids suitable for use in a subterranean treatment operation comprising an aqueous base fluid an...

Logging tools having protected tilted antennas are disclosed, along with construction methods therefor. In one method embodiment, a tilted antenna on a retrievable segment of a downhole tool is constructed by: forming an elliptical recess on the segment; forming an antenna within the elliptical recess; and forming a...

A gravel packing screen with an inflow control device and a bypass. A well screen includes a flow restricting device for restricting inward flow through the screen, and a bypass device for increasing a proportion of the inward flow which passes through the flow restricting device, the bypass device including a mater...

A method of servicing a wellbore comprising placing in the wellbore a cement composition comprising light-burned magnesium oxide, water and an alkaline metal chloride, and allowing the composition to set. A method of cementing comprising preparing a cement composition comprising a light-burned magnesium oxide, water...

In some embodiments, an apparatus includes a tubular to operate downhole. The tubular has a longitudinal axis and has a cutout that has a direction that is other than 90 degrees to the longitudinal axis of the tubular. The apparatus also includes an antenna positioned in the cutout of the tubular. The antenna is to ...

A cementitious composition is provided comprising a hydraulic cementitious material, iron chloride and sufficient water to form a pumpable slurry. The iron chloride predictably enhances the rheology and performance of the composition. Methods of cementing subterranean wells are accomplished by mixing together the hy...

A retrievable tool for steering through an earth formation includes a first tool assembly (406) and a tilted antenna (410) attached to the first tool assembly (406). The tool also includes a second tool assembly (422) attached to the first tool assembly (406) and a tilted antenna (426) attached to the second tool as...

A method of forming a mixture of two or more elements for discharge from a vessel (14). The change in the volume of the mixture in the vessel, as well as the flow of at least one of the elements and the mixture are measured so that the flow of an unmeasured element into the vessel can be calculated. ...

Settable drilling fluids that comprise an aqueous-based drilling fluid and cement kiln dust. Methods of cementing in a subterranean formation that comprise providing a settable drilling fluid comprising an aqueous-based drilling fluid and cement kiln dust, introducing the settable drilling fluid into a subterranean ...

Settable compositions that comprise water, CKD, and microspheres, wherein the lightweight settable composition has a density less than about 13 pounds per gallon. Methods of cementing that comprise providing a lightweight settable composition having a density less than about 13 pounds per gallon, the lightweight set...

Provided are methods of using fluid loss control additives that comprise a water-soluble polymer with hydrophobic or hydrophilic modification. In one embodiment, a method of providing at least some degree of fluid loss control during a subterranean treatment is provided. In an example of such a method, the meth...

A centralizer including hollow structural components. In at least one embodiment, the hollow structural component is sealed by at least one valve or rupture disk. When unacceptable overpressures occur, the valve or rupture disks break to allow influx into the hollow element, thereby relieving pressure and avoiding d...

An embodiment of the apparatus includes a first drill collar section having an outer surface, an MWD tool for interaction with an earth formation coupled to the first drill collar section, the MWD tool including a first fluid line and a first electrical conduit, a second drill collar section, and an interconnect ass...

Autonomous flow restrictors for use in a subterranean well. An apparatus is disclosed for use in a well wherein both oil and gas are produced. The apparatus includes multiple flow blocking members having a density less than that of the oil. The members are positioned within a chamber with the members increasingly re...

An expandable tubular for use in a subterranean well, the expandable tubular comprising: multiple recesses extending into a wall of the tubular, and the recesses being longitudinally spaced apart along the wall.

The present invention includes methods of cementing in subterranean formations using cement kiln dust in compositions having reduced Portland cement content. An embodiment of a method comprises placing a sealant composition that comprises cement kiln dust and is essentially free of Portland cement in a subterranean ...

The present invention includes methods and compositions that include a latex, and at least one of a natural pozzolan or cement kiln dust. An embodiment includes a method comprising: placing a latex composition in a subterranean formation, wherein the latex composition comprises: latex, a component selected from the ...

Devices and methods for testing cement include: a pressure vessel with a sample container inside an interior working volume of the pressure vessel, the pressure vessel configured to supply a first pressurized fluid to control a pore pressure of a cement sample and to supply a second pressurized fluid to lateral exte...

A well tool can include a flow path, and a flow blocking device which selectively prevents flow through the flow path. The device can include an anhydrous boron compound. A method of constructing a downhole well tool can include forming a structure of a solid mass comprising an anhydrous boron compound, and incorpor...

A system which attaches at least one line to a tubular string can include at least one clip pivotably secured on one side of a recess. At least one structure is positioned on an opposite side of the recess. Rotation of the clip into engagement with the structure secures the line in the recess. A method of attaching ...

A variable flow resistance system for use in a subterranean well can include a flow chamber through which a fluid composition flows the chamber having at least one inlet an outlet and at least one structure spirally oriented relative to the outlet whereby the structure induces spiral flow of the fluid composition ab...

A method of forming an entry guide at an end of a tubular string in a wellbore can include conveying a forming device into the wellbore and deforming the end of the tubular string from a cylindrical shape to an outwardly widening shape with the forming device. A method of forming an entry guide at an end of an expan...

An embodiment of the present invention comprises a method of cementing comprising: placing a settable composition into a well bore the settable composition comprising unexpanded perlite cement kiln dust and water; and allowing the settable composition to set. Another embodiment of the present invention comprises a m...

A method of coating a first porous substrate with a thermoplastic material comprises the steps of: rotating the substrate about an axis of the substrate; and applying the material in a liquefied state onto the substrate wherein the step of applying is performed from the outside of the substrate According to another ...

A downhole oilfield tool assembly is provided. The tool assembly comprises a mandrel a valve oriented to block downwards flow through the mandrel in a closed position a first piston located above the valve and at least partly around an outside of the mandrel. The first piston is configured to develop motive force fr...

A method of servicing a subterranean formation (102) comprising providing a first sleeve system (200a) comprising a first one or more ports and being transitionable from a first mode to a second mode and from the second mode to a third mode and a second sleeve system (200b) comprising a second one or more ports and ...

A method and apparatus for controlling oil well drilling equipment is disclosed. One or more sensors are distributed in the oil well drilling equipment. Each sensor produces a signal. A surface processor coupled to the one or more sensors via a high speed communications medium receives the signals from the one or mo...

The present invention relates to cement compositions and their use in cementing operations. The cements comprise an aluminosilicate; a sodium aluminate, a calcium aluminate, a potassium aluminate, or a combination thereof; and water. In some cases the cement does not include Portland cement. The cement may be used i...

The present invention is directed to an apparatus (10) and method for accurately metering and conveying a dry powder (V) or granular material to a blender (30) in a substantially closed system. The apparatus includes a storage lank (11) adapted to hold the dry powder or granular material, a hopper (24) disposed i...

A Method and Apparatus for Selection of Neural Network Ensemble for Processing Well Logging Data Conventional algorithms are used to train a number of neural networks having error diversity, for example by having a different number of hidden nodes in each network. A genetic algorithm having a multi-objective fitnes...

Disclosed are spacer fluids and methods of use in subterranean formations. Embodiments may include use of consolidating spacer fluids in displacement of drilling fluids from a well bore annulus.

Systems methods and software for detecting boundary locations of multiple subsurface layers are described. In some aspects the boundaries of multiple subsurface layers in a subterranean region are identified based on measurements associated with multiple different transmitter receiver spacings. The measurements a...

A rotary steerable drilling system includes a housing a drive shaft passing through the housing a shaft/housing locking mechanism disposed to selectively engage the drive shaft and the housing and an anti rotation mechanism disposed to engage a wellbore wall. Shaft/housing locking mechanism includes a first configur...

Apparatus and methods are described for autonomously controlling fluid flow in a tubular in a wellbore. A fluid is flowed through an inlet passageway into a biasing mechanism. A fluid flow distribution is established across the biasing mechanism. The fluid flow distribution is altered in response to a change in the ...

A downhole fluid flow control system for autonomously controlling the inflow of production fluids. The fluid flow control system includes a flow control assembly having a fluid flow path through which a fluid flows. A support structure is positioned in the fluid flow path. A plug is releasably coupled to the sup...

The present invention relates to methods of providing a cementing fluid comprising an aqueous liquid, a hydraulic cement, and a cement suspending agent that comprises a crosslinked particulate formed by a reaction comprising a first monofunctional monomer, a primary crosslinker, and a secondary crosslinker; placing ...

A flow control device comprises a fluid pathway configured to provide fluid communication between an exterior of a wellbore tubular and an interior of the wellbore tubular, a flow restriction disposed in the fluid pathway, wherein the flow restriction is disposed in a radial alignment with respect to the wellbore...

Methods and apparatuses for determining surface wetting of a metallic material with changing well fluids. In general the methods according to the invention include measuring electrical impedance spectroscopy ("EIS") for a system simulating downhole conditions for the wetting of a surface. Methods and apparatuses for...

A method of manufacturing a polycrystalline diamond (PCD) cutting element used as drill bit cutting elements (10) is disclosed. The method comprises leaching a PCD body formed from diamond particles (202) using a binder catalyzing material so as to remove substantially all of the binder catalyzing material from port...

A downhole bypass valve utilizes a stationary sleeve defining an interior ball-seat. When a dropped ball is seated, fluid differential pressure is diverted to an annular area adjacent a first sliding sleeve. The sleeve slides in response to the pressure differential upon shearing of a shear pin, or similar, and open...

A method of controlling pressure in a well can include transmitting an instruction to change flow through an annulus formed radially between a drill string and a wellbore and adjusting a pressure setpoint in response to the transmitting. A well drilling system can include a flow control device which varies flow thro...

A variable flow resistance system for use with a subterranean well can include a structure which displaces in response to a flow of a fluid composition whereby a resistance to the flow of the fluid composition changes in response to a change in a ratio of desired to undesired fluid in the fluid composition. Another ...

A method of cementing in a subterranean formation comprising: introducing a cement composition comprising cement, water, and a lignite-based copolymer into a subterranean formation, wherein the lignite-based copolymer comprises a lignite backbone, a first grafted monomer selected from the group consisting of - acry...

The present invention relates to acid soluble cement compositions that comprise cement kiln dust ("CKD") and associated methods of use. An embodiment provides a method of cementing comprising: providing an acid soluble cement composition comprising a kiln dust and water; allowing the acid soluble cement composition ...

Systems and methods for using gellable gravel packing fluids that may comprise polysaccharide gelling agents and gel stabilizers to extend the working temperature range for the polysaccharide gelling agents. A method for placing a gravel pack, in a subterranean formation comprising: providing a gravel packing flu...

A fiber optic splice housing and integral dry mate connector system. In a described embodiment, a fiber optic connection system includes optical fiber sections in respective conduit sections. Each of the conduit sections is received in the housing assembly. An optical connection between the optical fiber sections is...

Of the many compositions and methods provided herein one method includes providing a settable fluid that comprises an aqueous based medium a lime composition and a cementitious blend that comprises metakaolin particulates and aluminosilicate particulates wherein the cementitious blend is essentially free of Portland...

A bidirectional downhole fluid flow control system is operable to control the inflow of formation fluids and the outflow of injection fluids. The system includes at least one injection flow control component and at least one production flow control component in parallel with the at least one injection flow control c...

A variety of methods and compositions are disclosed , including in one embodiment , a method of cementing comprising: providing an aqueous dispersion comprising deagglomerated inorganic nanotubes and water; preparing a cement composition using the aqueous dispersion; introducing the cement composition into a subterr...

Disclosed herein is a wellbore servicing system comprising a tubular string a first sleeve system incorporated within the tubular string the first sleeve system comprising a first sliding sleeve (260) at least partially carried within a first ported case (208) the first sleeve system being selectively restricted fro...

A downhole drilling motor comprises a first elastomer stator molded to an inner surface of a housing in a drillstring where the first elastomer stator has a first number of lobes. A dual purpose helical shaped hollow member is positioned within the first elastomer stator where the dual purpose hollow member has a se...

A method of variably restricting flow in a subterranean well can include resisting flow through a flow path and then selectively opening a pressure barrier which previously prevented flow through another flow path. The flow paths are configured for parallel flow. A flow restrictor system for use with a subterranean ...

Methods and compositions for treating a subterranean formation with salt tolerant cement slurries including treating a salt containing subterranean formation having sodium salts potassium salts magnesium salts calcium salts or any combination thereof comprising : providing a salt tolerant cement slurry comprising : ...

A method of performing a static gel strength test on a composition can include placing the composition into a static gel strength test instrument stirring the composition with at least one helical blade of the instrument and measuring resistance to rotation between a stator and a rotor of the instrument. A static ...

A well screen assembly includes a tubular base pipe. The base pipe has a sidewall aperture that communicates fluid between an interior central bore of the base pipe and an exterior of the base pipe. A filtration screen is around the base pipe. The filtration screen defines a lateral fluid passage along a axial lengt...

A downhole tool assembly is presented for use in a wellbore, the tool having a mandrel assembly for substantially bearing the tensile and rotational loads placed on the tool assembly during run- in to the wellbore , a displacement assembly for substantially bearing displacement loads and for providing relative movem...

According to an embodiment a device for directing the flow of a fluid comprises: a fluid chamber; a first outlet; a second outlet; a first outlet fluid passageway wherein the first outlet fluid passageway is operatively connected to the first outlet; and a second outlet fluid passageway wherein the second outlet flu...

Sealant compositions that may be used for creating fluid flow preventing barriers in a subterranean formation. A method may comprise reacting components comprising an oxazoline functionalized polymer and a crosslinking agent in a subterranean formation to create a barrier in the subterranean formation. ...

A well production and injection string includes a plurality of spaced apart packers each adapted to seal with a wall of the wellbore. A plurality of flow control devices are provided in the string distributed between pairs of adjacent packers. The flow control devices are adapted to communicate flow between an inter...

Methods and compositions are provided that relate to resin based sealant compositions comprising cement kiln dust. An embodiment discloses a method comprising: providing a resin based sealant composition comprising a liquid hardenable resin component and kiln dust; and allowing the resin based sealant composition to...

Apparatus and systems as well as methods may operate to acquire formation signals from a deep measurement electromagnetic antenna array where values of the formation signals depend on properties of a geological formation. Formation signals may also be acquired from an at bit resistivity (ABR) sensor where the ABR se...

A variable flow resistance system for use with a subterranean well can include a flow chamber through which a fluid composition flows the chamber having at least two inlets and a flow resistance which varies depending on proportions of the fluid composition which flow into the chamber via the respective inlet flow p...

A packer (200) for establishing sealing engagement with a surface disposed in a wellbore includes a packer mandrel (202) and a seal assembly slidably disposed about the packer mandrel (202). The seal assembly has a running position and a radially expanded sealing position. A piston (206) is slidably disposed about t...

The present invention generally relates to fracture completion strategies and more specifically , to optimizing the placement of fracture intervals based upon a mineralogical analysis of the formation. Conventionally , a very simplistic approach is used to determine fracture initiation points along a wellbore. The f...

A flow control screen having a flow path between the interior of a base pipe and a filter medium. A valve assembly including a valve plug a ball retainer and a piston body with a collet assembly is disposed within the flow path in an opening of a housing disposed about the base pipe. The collet assembly is radially ...

Remote operation of downhole tools in a subterranean wellbore is performed by inserting untethered mobile devices sequentially into the wellbore. The mobile devices can include motive means power supply communication and data storage means etc. In one embodiment the method comprises maneuvering a first mobile device...

The invention provides methods for testing a sample of fluid mixture like cement that hardens into a solid by measuring both axial shrinkage/expansion and radial shrinkage/expansion of a sample.

A variety of methods and compositions are disclosed , including , in one embodiment, a method of treating a well comprising: providing a treatment fluid comprising a base fluid and a blended cementitious component , wherein the blended cementitious component comprises kiln dust from two or more different sources; an...

Diverting flow in a drilling fluid circulation system to regulate drilling fluid pressure. A pump of a drilling fluid pressure regulation system for a well bore can discharge drilling fluid through discharge piping at flow rate. A pressure control device has an inlet connected to the discharge piping and an outlet c...

Methods and systems are provided for optimizing a drill path from the surface to a target area below the surface. A method for operating an automated drilling program may comprise drilling to a target location along a drill path updating a drilling path model based at least on data obtained during the state of drill...

A switch responsive to a pressure differential including a pressure response mechanism for providing a pressure response in response to the pressure differential and a device actuator arranged to interact with the pressure response mechanism and to utilize the pressure response of the pressure response mechanism to ...

A method of fabricating a sand control screen assembly (110) includes determining an anatomy of a facsimile sand control screen assembly, the sand control screen assembly (110) including one or more component parts. A virtual three-dimensional (3D) model of the facsimile sand control screen assembly is then generat...

A threaded joint (200) provides for metal -to-metal sealing on the ends of concentrically positioned inner and outer tubes when joining the concentric tubes to a single tube (107). A threaded coupling (105) secures the inner and outer tubes and joins both tubes to a single tube. The threaded connection leverages met...

A seal assembly and methods of use, wherein the seal assembly is formed of an elastomeric enclosure within which a primary cavity is defined. A second cavity in the form of a crushable container is deployed within the primary chamber. An elastomeric compound is contained in one cavity and an elastomeric hardener con...

Included are compositions, methods, and systems for mitigating annular pressure buildup in a wellbore. An example method comprises introducing a spacer fluid into an annulus of the wellbore, wherein the spacer fluid comprises an aqueous base fluid, an acid swellable polymer, and a hydrolysable ester. The method furt...

A drilling system comprising a drill string defined between an upper end and a lower end. The drill string comprises a drill pipe a motor disposed between the drill pipe and the lower end a drill bit disposed between the motor and the lower end and an electronics assembly disposed within the motor or between the mot...

A shunt tube assembly comprises a plurality of shunt tubes, a jumper tube, and a coupling member configured to provide fluid communication between the jumper tube and the plurality of shunt tubes. The coupling member can comprise a first end and a second end. The coupling member may be configured to provide a sealin...

Methods and apparatuses for determining surface wetting of a metallic material with changing well fluids. In general, the methods according to the invention include measuring electrical impedance spectroscopy ("EIS") for a system simulating downhole conditions for the wetting of a surface. Methods and apparatuses fo...

Compositions comprising: (i) a hydraulic cement; and (ii) a polymer comprising at least one monomer having an oxazoline group. Methods of cementing in a well comprising: (A) forming a hydraulic cement composition comprising: (i) a hydraulic cement; (ii) a polymer comprising at least one monomer having an oxazoline g...

The turbine (100) can be used to transmit electrical data signals for example sensor data signals across a down hole turbine using with the data signals be communicated via a shaft (102). As a result a signal can be induced onto the shaft (102) from a lower end of the shaft (102) for example motor shaft to an upper ...