WELL ASSEMBLY WITH REMOVABLE FLUID RESTRICTING MEMBER
Technical Field of the Invention
[0001] The present invention relates generally to an assembly for
subterranean fluid production and, more particularly (although not necessarily
exclusively), to an assembly that includes a fluid restricting member configured to be
removed from a groove after the assembly is located in a wellbore.
Background
[0002] Hydrocarbons can be produced through a wellbore traversing a
subterranean formation. Various components can be located in the bore to produce
hydrocarbons. For example, perforated piping can be used to receive hydrocarbons,
inflow control devices can be used to control the flow of hydrocarbons from a
formation to the perforated piping, and screen assemblies can be used to stabilize
the formation in a production zone and to filter particulate materials from the
hydrocarbons before the hydrocarbons enter the perforated piping.
[0003] Some of the components can be located or activated in the bore using
pressure. For example, some of the components may respond to a pressure
exceeding a selected threshold by changing configuration. A tubing valve, such as a
one-way valve, may be used to prevent pressure used to configure one component
from affecting other components.
[0004] In some implementations, the tubing valve may prevent post-placement
treatments to certain components. For example, particulate materials, such as sand
and dirt, may plug openings in the base pipe or other components. Acid can be used
to remove the particulate materials from the openings after placement. The tubing
valve, however, may prevent acid from being pumped to the location of the openings.
[0005] Aluminum bypass plugs have been used in perforations of production
piping to prevent particulate materials from plugging the perforations. The aluminum
plugs dissolve after contact with acid introduced into the bore to open the
perforations. The aluminum bypass plugs, however, require the acid to be
introduced into the bore and may dissolve at an unpredictable rate, depending on the
amount and chemical composition of both the acid and the aluminum plugs.
Furthermore, the tubing valve may prevent acid flow to the aluminum plugs.

[0006] Therefore, a mechanism for bypassing a tubing valve is desirable. A
mechanism for bypassing a tubing valve without requiring an introduction of materials
into the bore to cause the bypass is desirable. A mechanism for bypassing a tubing
valve predictably is also desirable.
Summary
[0007] Certain embodiments of the present invention are directed to
assemblies that include a fluid restricting member in a groove located between an
inner wall of a base pipe and an outer wall of an assembly housing that is exterior to
the base pipe. The fluid restricting member may cooperate with a tubing valve or
other component to restrict fluid flow and prevent pressure equalization, partially or
fully. At least a portion of the fluid restricting member is removable from the groove
after the fluid restricting member is exposed to an environment of a subterranean
bore. The groove with at least part of the fluid restricting member removed may
provide a bypass to the tubing valve or the other component. In some embodiments,
the fluid restricting member is capable of degrading upon exposure to the
environment of the bore and of being removed from the groove after at least partially
degrading. For example, at least a portion of the fluid restricting member can be
removed from the groove by fluid flow after degrading at least partially.
[0008] In one aspect, an assembly capable of being disposed in a bore is
provided. The assembly includes a base pipe, an assembly housing, and a fluid
restricting member. The base pipe has an inner wall defining a flow path. The
assembly housing is disposed exterior to the base pipe and has an outer wall. The
fluid restricting member is disposed in at least one groove between the inner wall of
the base pipe and the outer wall of the assembly housing. At least a portion of the
fluid restricting member is removable after exposure to an environment in the bore.
[0009] In at least one embodiment, the base pipe includes the at least one
groove in an outer wall of the base pipe.
[0010] In at least one embodiment, the assembly includes a sleeve disposed
exterior to at least part of the base pipe. The sleeve includes the at least one groove.
[0011] In at least one embodiment, the fluid restricting member includes at
least one of polylactic acid,asphalt compounds, paraffin wax, polycaprolactone, or
poly-3-hydroxybutyrate.

[0012] In at least one embodiment, the assembly housing is coupled to at least
one of an inflow control device or a sand screen.
[0013] In at least one embodiment, the fluid restricting member can restrict
fluid flow for a pre-selected amount of time after the fluid restricting member is
exposed to the environment of the bore.
[0014] In at least one embodiment, the assembly includes an assembly sleeve
disposed between the base pipe and the assembly housing. The assembly sleeve
can cooperate with the fluid restricting member to restrict fluid flow for the pre-
selected amount of time after the fluid restricting member is exposed to the
environment of the bore.
[0015] In at least one embodiment, the assembly sleeve can cooperate with a
ring to form a tubing valve. The ring includes the at least one groove.
[0016] In at least one embodiment, the assembly housing includes the at least
one groove in an inner wall of the assembly housing.
[0017] In at least one embodiment, the fluid restricting member can degrade
upon being exposed to the environment of the bore. At least the portion of the fluid
restricting member can be removed from the at least one groove by fluid flow after
the fluid restricting member degrades at least partially.
[0018] In another aspect, an assembly capable of being disposed in a bore is
provided. The assembly includes a sleeve. The sleeve includes at least one groove
that has a fluid restricting member disposed in the at least one groove. The sleeve
can be located exterior to at least part of a base pipe. At least a portion of the fluid
restricting member can be removed from the at least one groove after being exposed
to an environment of the bore to form a bypass to a tubing valve.
[0019] In at least one embodiment, the sleeve is positioned substantially
adjacent to the base pipe and can form a seal with the base pipe.
[0020] In at least one embodiment, the assembly includes a tubing valve that
can cooperate with the fluid restricting member to form a seal before at least the
portion of the fluid restricting member is removed from the at least one groove.
[0021] In at least one embodiment, the tubing valve includes a ring and an
assembly sleeve. The ring can be coupled to an assembly housing. The assembly
sleeve can cooperate with the fluid restricting member to restrict fluid flow at least

partially before at least the portion of the fluid restricting member is removed from the
at least one groove.
[0022] In another aspect, an assembly capable of being disposed in a bore is
provided. The assembly includes a base pipe, an assembly housing, at least one
groove, a fluid restricting member, and an assembly sleeve. The base pipe has an
inner wall defining a flow path. The assembly housing is disposed exterior to the
base pipe and has an outer wall. The at least one groove is positioned between the
inner wall of the base pipe and the outer wall of the assembly housing. The fluid
restricting member is disposed in the at least one groove. The assembly sleeve is
positioned between the fluid restricting member and the assembly housing. The
assembly sleeve is configured to cooperate with the fluid restricting member to
restrict fluid flow at least partially. At least a portion of the fluid restricting member
can be removed from the at least one groove after being exposed to an environment
of the bore to allow fluid to bypass the assembly sleeve.
[0023] In at least one embodiment, the fluid restricting member can degrade a
first pre-set threshold amount upon being exposed to the environment of the bore to
allow fluid to bypass the assembly sleeve. At least the portion of the fluid restricting
member can be removed by fluid flow after degrading a second pre-set threshold
amount.
[0024] These illustrative aspects and embodiments are mentioned not to limit
or define the invention, but to provide examples to aid understanding of the inventive
concepts disclosed in this application. Other aspects, advantages, and features of
the present invention will become apparent after review of the entire application.
Brief Description of the Drawings
[0025] Figure 1 is a schematic illustration of a well system having assemblies
with fluid restricting members according to one embodiment of the present invention.
[0026] Figure 2 is a perspective view of an assembly with a screen according
to one embodiment of the present invention.
[0027] Figure 3A is a perspective view of fluid restricting members in a
grooved sleeve exterior to a base pipe according to one embodiment of the present
invention.
[0028] Figure 3B is a cross-sectional view of the grooved sleeve of Figure 3A.

[0029] Figure 4A is a cross-sectional view of an assembly with fluid restricting
members in a grooved sleeve restricting fluid flow according to one embodiment of
the present invention.
[0030] Figure 4B is a cross-sectional view of the assembly of Figure 4A with
fluid restricting members removed from the grooved sleeved according to one
embodiment of the present invention.
[0031] Figure 5A is a perspective view of fluid restricting members in grooves
of a base pipe according to one embodiment of the present invention.
[0032] Figure 5B is a cross-sectional view of the grooved base pipe of Figure
5A.
[0033] Figure 6A is a cross-sectional view of an assembly with fluid restricting
members in a grooved base pipe that are restricting fluid flow according to one
embodiment of the present invention.
[0034] Figure 6B is a cross-sectional view of the assembly of Figure 6A with
fluid restricting members removed from the base pipe grooves according to one
embodiment of the present invention.
Detailed Description
[0035] Certain aspects and embodiments of the present invention relate to
assemblies capable of being disposed in a bore, such as a wellbore, of a
subterranean formation for use in producing hydrocarbon fluids from the formation.
An assembly according to certain embodiments of the present invention can include
a fluid restricting member located in a groove between an inner wall of a base pipe
and an outer wall of an assembly housing. The fluid restricting member can be
configured to prevent fluid flow at least partially for a certain amount of time. After
being exposed to an environment of the bore, at least a portion of the fluid restricting
member may be removed from the groove to provide a bypass, allowing fluid to flow
and pressure to equalize. The bypass may be a bypass to a tubing valve. In some
embodiments, the fluid restricting member can degrade at a known or estimated rate
upon being exposed to the environment of the bore and, after degrading at least
partially, be removed from the groove by fluid flow or otherwise.
[0036] In some embodiments, the fluid restricting member is a material that
degrades after exposure to a temperature above a certain threshold. The

temperature at the location of the temporary fluid restricting member in the bore can
be known. The rate of degradation of the fluid restricting member can be determined
using the temperature. Examples of the material include polylactic acid (PLA),
asphalt compounds, paraffin wax, polycaprolactone, and poly-3-hydroxybutyrate.
[0037] Grooves according to various embodiments of the present invention
can be any shape and size that is configured to receive the fluid restricting member
at least temporarily. In some embodiments, a base pipe is provided that includes
one or more grooves in a portion of an exterior wall of the base pipe. In other
embodiments, a sleeve capable of being located exterior to at least part of the base
pipe or at least part of an assembly housing or other component may be provided
that includes one or more grooves in an exterior wall of the sleeve. In some
embodiments, an assembly housing exterior to a base pipe is provided that includes
one or more grooves in a portion of an inner wall of the assembly housing.
[0038] The fluid restricting member may cooperate with an assembly sleeve, a
valve, or another structure before degrading a certain amount to restrict fluid flow and
to prevent pressure from affecting certain components. Restricting fluid flow can
include partially or fully preventing fluid flow. Other components, such as packers,
can be located or otherwise set in the bore using pressure, and the fluid restricting
member cooperating with the assembly sleeve can prevent the pressure from
affecting other components. After the packers, for example, are set, the fluid
restricting member can be configured to degrade and to be removed by fluid flow or
otherwise to provide a bypass for fluid and pressure around the assembly sleeve. In
some embodiments, the fluid restricting member can degrade after being exposed to
an environment of the bore by dissolving, melting, or otherwise changing
configuration.
[0039] Figure 1 shows a well system 10 with assemblies according to certain
embodiments of the present invention. The well system 10 includes a bore that is a
wellbore 12 that extends through various earth strata. The wellbore 12 has a
substantially vertical section 14 and a substantially horizontal section 18. The
substantially vertical section 14 includes a casing string 16 cemented at an upper
portion of the substantially vertical section 14. The substantially horizontal section 18
is open hole and extends through a hydrocarbon bearing subterranean formation 20.

[0040] A tubing string 22 extends from the surface within wellbore 12. The
tubing string 22 can provide a conduit for formation fluids to travel from the
substantially horizontal section 18 to the surface. Assemblies 24, 26, 28 are
positioned with the tubing string 22 in the substantially horizontal section 18. Each of
the assemblies 24, 26, 28 includes a base pipe with perforations to receive
hydrocarbon fluid, an assembly sleeve, and an assembly housing. Each of the
assemblies 24, 26, 28 also includes one or more grooves that each can receive a
fluid restricting member. In some embodiments, each of assemblies 24, 26, 28
includes a sand control screen, inflow control device, or other component configured
to assist in hydrocarbon fluid production.
[0041] Tubing strings according to various embodiments of the present
invention, however, may include any number of other tools and systems in addition to
assemblies 24, 26, 28. Examples of other tools and systems include communication
systems, safety systems, couplings, and zonal isolation devices such as packers.
For example, assemblies 24, 26 are illustrated as being separated by a coupling 30
positioned with the tubing string. Packer 32 is positioned with the tubing string
between assembly 24 and assembly 26. Packer 34 is positioned between assembly
26 and assembly 28. Packers 32, 34 may be zonal isolation devices that are made
from materials capable of expanding upon contact with a fluid or upon exposure to a
pressure above a certain threshold. For example, packers 32, 34 may be set after
the assemblies 24, 26, 28 are located in the wellbore 12. The fluid restricting
members can be configured to prevent pressure introduced in setting the packers 32,
34 from affecting other components located in the wellbore 12 and, after a suitable
amount of time, be removed from the grooves by fluid flow or otherwise. In some
embodiments, the fluid restricting members are configured to degrade after exposure
to an environment of the bore and be removed from the grooves after degrading at
least partially.
[0042] Figure 1 shows assemblies according to certain embodiments of the
present invention in the substantially horizontal section 18 of the wellbore 12.
Various screen assembly embodiments according to the present invention, however,
can be used in deviated, vertical, or multilateral wellbores. Deviated wellbores may
include directions different than, or in addition to, a general horizontal or a general

vertical direction. Multilateral wellbores can include a main wellbore and one or more
branch wellbores. Directional descriptions are used herein to describe the illustrative
embodiments but, like the illustrative embodiments, should not be used to limit the
present invention.
[0043] Certain embodiments of the present invention can be disposed in an
injection well. In an injection well, water or other fluid is injected into the well to
increase flow of hydrocarbon fluids to a nearby production well. Assemblies
according to certain embodiments of the present invention can be disposed in the
injection well to provide a temporary block to fluid when the components are set into
the injection well.
[0044] Assemblies according to some embodiments of the present invention
can be disposed in a cased hole completion. In a cased hole completion, a large
diameter pipe is positioned between a production string and a formation. The large
diameter pipe may be a base pipe with openings in a sidewall portion of the base
pipe. An assembly can be positioned exterior to the large diameter pipe. The
assembly can include one or more grooves with a fluid restricting member located in
each of the grooves. The fluid restricting member can be configured to at least
partially restrict fluid flow and to prevent pressure from affecting certain assembly
components independently or in cooperation with an assembly sleeve or otherwise a
one-way valve. The fluid restricting member may degrade at a certain rate upon
exposure to an environment and, after degrading a certain amount, be removed from
the groove by fluid flow to allow fluid flow and pressure to equalize among two or
more assembly components.
[0045] Assemblies according to some embodiments of the present invention
may include a control line that can be a fiber optic cable in communication with a
sensor capable of contacting a fluid restricting member or a formation. The control
line can detect conditions associated with the fluid restricting member or the
formation and can transmit information about the conditions to the surface for
analysis.
[0046] Figure 2 shows a more detailed view of an assembly, such as one of
the assemblies 24, 26, 28, according to one embodiment of the present invention.
The assembly includes a base pipe 102 having an inner wall defining an internal flow

path 104 and having an outer wall 106. The outer wall 106 includes perforations 108
that are openings forming a conduit to allow hydrocarbon fluids to flow to the internal
flow path 104 and fluid to flow from the internal flow path 104. A screen
subassembly 110 is located circumferential to part of the base pipe 102. The screen
subassembly 110 can be configured to filter particulate material from hydrocarbon
fluid produced by a formation and to provide stability to the formation at the
production interval. Although Figure 2 illustrates a screen subassembly 110, other
devices, such as an inflow control device, can be used with the screen subassembly
110 or as alternatives to the screen subassembly 110.
[0047] The assembly in Figure 2 also includes a tubing valve 112. The tubing
valve 112 includes a ring 114 and an assembly sleeve 116. The ring 114 may
provide a seal for the tubing valve with assembly housing 118. Assembly housing
118 is represented using a dotted line in Figure 2 to allow the components covered
by the assembly housing 118 to be viewed. The assembly sleeve 116 can extend
from the ring 114 to the base pipe 102 and can provide a seal with the base pipe
102.
[0048] The assembly can include grooves 120. The grooves 120 are shown at
a location of the base pipe 102 to which the assembly sleeve 116 extends. In other
embodiments, the grooves 120 are positioned in other locations of the assembly,
such as any location between an inner wall of the base pipe 102 and an outer wall of
the assembly housing 118. For example, the grooves 120 may be located on or
substantially adjacent to the assembly housing 118, ring 114, or assembly sleeve
116.
[0049] The grooves 120 can receive fluid restricting members 122. The fluid
restricting members 122 may be degradable materials that can at least partially
restrict fluid flow and prevent pressure from affecting certain components and that
can degrade after being exposed to an environment of a bore. In some
embodiments, the fluid restricting members 112 cooperate with the assembly sleeve
116 to restrict at least partially fluid flow and pressure from affecting certain
components. In some embodiments, the fluid restricting members 112 can be
removed from the grooves 120 by fluid flow, such as a flow of fluids present in the
bore or of fluids introduced into the bore, after degrading a certain amount. The

grooves 120 with fluid restricting members 112 removed can provide a bypass to the
tubing valve 112 to allow fluid to flow from one side of assembly sleeve 116 to the
other side of the assembly sleeve 116 and to allow pressure to equalize on both
sides of the assembly sleeve 116.
[0050] The fluid restricting members 122 may be any material that can
degrade, such as by changing configuration in response to being exposed to one or
more characteristics of the environment of the bore. In some embodiments, the fluid
restricting members 122 are in a brittle, but solid, configuration before exposure to
the environment of the bore. Upon exposure to a temperature characteristic of the
environment, for example, the fluid restricting members 122 can change
configuration from a brittle, but solid, configuration to a wax-like configuration or a
liquid configuration. In some embodiments, the fluid restricting members 122 can
melt, such as by changing from a substantially solid state to at least a partly liquid or
gaseous state at a specified rate upon exposure to temperature, pressure, and/or
moisture of a subterranean bore environment. A substantially solid state can include
matter that is malleable or brittle, but otherwise is capable of preventing pressure
from equalizing fully across the material or fluid to flow at least fully. Examples of the
fluid restricting members 122 include polylactic acid (PLA), asphalt compounds,
paraffin wax, polycaprolactone, and poly-3-hydroxybutyrate.
[0051] Assemblies according to various embodiments of the present invention
can include grooves in a variety of configurations for receiving fluid restricting
members. Figure 3A depicts a sleeve 202 that includes fluid restricting members 204
received in grooves 206. The sleeve 202 is positioned circumferential to a portion of
a base pipe 208 exterior. A tubing valve (not shown) may be provided that can
cooperate with the fluid restricting members 204 to block fluid flow and pressure
equalization from one end of the grooves 206 to a second end of the grooves 206.
The fluid restricting members 204 can include a degradable material that degrades at
a specified rate upon exposure to an environment of a bore. Sleeves according to
various embodiments can be made from any material. Examples of material include
rubber compounds, polymers, and metallic materials.
[0052] Figure 3B depicts a cross-sectional view along line A-A of the sleeve
202 of Figure 3A that includes grooves 206 located exterior to a portion of the base

pipe 208. In some embodiments, the sleeve 202 contacts the base pipe 208 to form
a seal between the sleeve 202 and the base pipe 208. Grooves 206 can be formed
in the sleeve 202 by removing a portion of the sleeve 202 or using a mold that
provides for the grooves 206. Each of the grooves 206 can receive one of the fluid
restricting members 204. Figure 3B shows grooves 206 that do not extend through
the entire cross-sectional portion of the sleeve 202. In other embodiments, the
grooves 206 extend through the entire cross-sectional portion of the sleeve 202.
Although Figures 3A and 3B depict multiple grooves, where each of the grooves is
capable of receiving a fluid restricting member, sleeves according to certain
embodiments of the present invention may include any number of grooves, including
one groove, capable of receiving a fluid restricting member. Figures 3A and 3B also
depict grooves 206 having a substantially semi-circular cross-sectional shape and a
substantially rectangular surface shape. However, grooves according to various
embodiments of the present invention can have any desired shape, surface shape
and cross-sectional shape, and be any desired size.
[0053] Furthermore, Figures 3A and 3B depict grooves 206 in an outer surface
of the sleeve 202. In other embodiments, a sleeve is provided that include grooves
in an inner surface of the sleeve. Each of the grooves can receive a fluid restricting
member. The fluid restricting member may cooperate with an outer surface of a base
pipe, a tubing valve, or other component to at least partially restrict fluid flow and
pressure equalization.
[0054] The fluid restricting members 204 can be removed from the grooves
206 by fluid flow after a certain amount of time of being exposed to an environment of
the bore. In some embodiments, the fluid restricting members 204 degrade after
exposure to an environment of the bore. For example, the fluid restricting members
204 may degrade at an exponential or other non-linear rate where the rate of
degradation is comparatively small at a beginning of the degrading process and
becomes comparatively large over time in the degrading process. At a first threshold
point during the degrading process, the fluid restricting members 204 can degrade a
sufficient amount to allow pressure to equalize and to allow fluid to flow across the
fluid restricting members 204. Fluid can include both liquids and gasses. At a
second threshold point during the degrading process, the fluid restricting members

204 can degrade a sufficient amount such that fluid flow can cause the fluid
restricting members 204 to be removed from the grooves 206. In some
embodiments, the first threshold and the second threshold are the same threshold
point during the degrading process. In other embodiments, the first threshold is prior
in time to the second threshold during the degrading process.
[0055] Figures 4A and 4B depict a cross-section of the sleeve 202 in an
assembly 210 located in a bore 212 of a subterranean formation 214. The assembly
210 includes the base pipe 208 having perforations 216 to allow fluid communication
to an internal flow path 218. The sleeve 202 is located exterior to a portion of the
base pipe 208. A screen 220 is located exterior to a second portion of the base pipe
208. Screen 220, however, may be any device disposed in the bore 212 to assist
hydrocarbon fluid production. In some embodiments, the assembly 210 does not
include the screen 220 or any similar device.
[0056] An assembly housing 222 cooperates with a tubing valve 224 and the
base pipe 208 to direct hydrocarbon fluid to the internal flow path 218 during
hydrocarbon production. The assembly housing 222 can be constructed from any
material that is capable of sustaining its solid state and general shape upon exposure
to an environment in the bore 212. The tubing valve 224 is positioned exterior to a
third portion of the base pipe 208. The tubing valve 224 includes a ring 226 and an
assembly sleeve 228 that are configured to cooperate with the fluid restricting
members 204 in grooves 206 to restrict, partially or fully, fluid flow and prevent,
partially or fully, pressure equalization between one end of the tubing valve 224 and
a second end of the tubing valve 224, as depicted by arrowed lines in Figure 4A.
The ring 226 may be made from any material that is capable of retaining a solid state
and a general shape upon exposure to an environment in the bore 212. The
assembly sleeve 228 may be made from any material configured to restrict at least
partially fluid flow and prevent at least partially pressure equalization. Examples of
material from which assembly sleeve 228 can be made include rubber compounds,
polymers, and metals.
[0057] The fluid restricting members 204 may be removable after exposure to
an environment of the bore. In some embodiments, the fluid restricting members 204
are configured to degrade after exposure to an environment of the bore and to be

removed from the grooves by fluid flow after degrading at least partially. Figure 4B
depicts the assembly 210 having fluid restricting members 204 removed from
grooves 206. The grooves 206 with the fluid restricting members 204 removed
provide a bypass to the tubing valve 224 for fluid to flow and pressure to equalize as
depicted by the arrowed lines in Figure 4B.
[0058] A second groove configuration is shown in Figures 5A and 5B. A base
pipe 302 is shown that includes grooves 304 in an exterior wall of the base pipe 302.
Fluid restricting members 306 are located in the grooves 304. The fluid restricting
members 306 may be a material that is removable after being exposed to an
environment of the bore. In some embodiments, the fluid restricting members 306
are configured to degrade at a specified rate upon exposure to an environment of a
subterranean bore and be removed by fluid flow or otherwise after degrading at least
partially. Grooves 304 may be formed in the base pipe 302 by removing a portion of
the base pipe 302 or by manufacturing a base pipe 302 using a mold that forms the
grooves 304.
[0059] Figure 5B depicts a cross-section along line B-B of Figure 5A. Grooves
304 extend through part of entire cross-section of the base pipe 302, but not the
entire cross-section. In other embodiments, the grooves 304 extend the entire cross-
section of the base pipe 302 and are configured to be perforations in the base pipe
302 for receiving hydrocarbon fluids after the fluid restricting members 306 are
removed from the grooves 304. Figures 5A and 5B depict multiple grooves where
each of the grooves is capable of receiving a fluid restricting member. Base pipes
according to some embodiments, however, may include any number of grooves,
including one groove, capable of receiving a fluid restricting member and may be any
desired shape or size.
[0060] Figures 6A and 6B depict an assembly 310 that includes the base pipe
302 disposed in a bore 312 of a formation 314. The base pipe 302 includes grooves
304 located at a first portion of an outer wall of the base pipe 302 and includes
perforations 316. The perforations 316 allow fluid to flow to an internal flow path 318
and from the internal flow path 318. A screen 320 is located exterior to a second
portion of the base pipe 302. Although a screen 320 is depicted, any device can be
disposed in the bore 312 to assist hydrocarbon fluid production. In some

embodiments, the assembly 310 does not include the screen 320 or any similar
device.
[0061] An assembly housing 322 cooperates with a tubing valve 324 and the
base pipe 302 to direct hydrocarbon fluid to the internal flow path 318 during
hydrocarbon production. The tubing valve 324 is positioned exterior to a third portion
of the base pipe 302. The tubing valve 324 includes a ring 326 and an assembly
sleeve 328 that are configured to cooperate with the fluid restricting members 306 in
grooves 304 to restrict at least partially fluid flow and prevent at least partially
pressure equalization between one end of the tubing valve 324 and a second end of
the tubing valve 324, as depicted by arrowed lines in Figure 6A.
[0062] For example, packer 330 can be set using pressure or otherwise when
the fluid restricting members 306 are located in the grooves 304. The fluid restricting
members 306 can cooperate with the tubing valve 324, such as by cooperating with
the assembly sleeve 328, to prevent pressure introduced to set the packer 330 from
affecting components or flow through the assembly 310.
[0063] The fluid restricting members 306 may be removable after exposure to
an environment of the bore 312. In some embodiments, the fluid restricting members
306 may be configured to degrade at a certain rate after exposure to the environment
of the bore 312 and, after degrading at least partially, configured to be removed from
the grooves 304 by fluid flow. For example, the fluid restricting members 306 can be
configured to degrade at a certain rate to allow the packer 330 to be set before a
threshold in the degrading process at which the fluid restricting members 306 no
longer restrict fluid flow or prevent pressure equalization. Figure 6B depicts the
assembly 310 with fluid restricting members 306 removed from grooves 304. The
grooves 304 with the fluid restricting members 306 removed provide a bypass to the
tubing valve 324 for fluid to flow and pressure to equalize as depicted by the arrowed
lines in Figure 6B.
[0064] Grooves for receiving fluid restricting members can be located at other
portions of an assembly than the depicted embodiments. In some embodiments,
grooves can be located at any location and associated with any component between
an inner wall of a base pipe and an outer wall of an assembly housing. For example,
one or more grooves can be located in an assembly sleeve of a tubing valve, a ring

of a tubing valve, or an inner wall of an assembly housing. In some embodiments,
grooves may be located in one or more sleeves that can be located exterior to an
assembly sleeve of a tubing valve, a ring of a tubing valve, or an assembly housing.
Embodiments of the present invention may include a combination of the depicted
embodiments and/or grooves located in other components of an assembly.
Furthermore, grooves according to various embodiments of the present invention
may be any size and have any depth. For example, one or more grooves may be
openings that are configured to receive fluid restricting members. In some
embodiments, an assembly can include one groove that surrounds an entire
circumferential portion of a base pipe, sleeve, or other assembly component.
[0065] Fluid restricting members according to various embodiments of the
present invention can be any material that can change configuration based on one or
more characteristics of a subterranean bore environment, such as temperature,
pressure, and/or moisture, at a specified rate. These types of materials can include
polylactic acid (PLA), asphalt compounds, paraffin wax, polycaprolactone, and poly-
3-hydroxybutyrate. Additional examples include polyglycolic acid (PGA),
polyetheretherketone (PEEK), Polycaprolactone (PCL), any suitable organic or
inorganic compounds, and any combination of these or other suitable materials. In
some embodiments, suitable materials can include materials having a melting
temperature of between 45°C (113°F) to 175°C (347°F) at atmospheric pressure.
[0066] The foregoing description of the embodiments, including illustrated
embodiments, of the invention has been presented only for the purpose of illustration
and description and is not intended to be exhaustive or to limit the invention to the
precise forms disclosed. Numerous modifications, adaptations, and uses thereof will
be apparent to those skilled in the art without departing from the scope of this
invention.

CLAIMS:
1. An assembly capable of being disposed in a bore, the assembly comprising:
a base pipe having an inner wall defining a flow path;
an assembly housing having an outer wall, the assembly housing being
disposed exterior to the base pipe; and
a fluid restricting member disposed in at least one groove between the inner
wall of the base pipe and the outer wall of the assembly housing, at least a portion of
the fluid restricting member being removable from the at least one groove after
exposure to an environment in the bore.
2. An assembly according to claim 1, wherein the assembly housing is coupled
to at least one of an inflow control device or a sand screen.
3. An assembly according to claim 2, further comprising an assembly sleeve
disposed between the base pipe and the assembly housing, the assembly sleeve
being configured to cooperate with the fluid restricting member to restrict fluid flow for
the pre-selected amount of time after the fluid restricting member is exposed to the
environment of the bore.
4. An assembly according to claim 3, wherein the assembly sleeve is capable of
cooperating with a ring to form a tubing valve, wherein the ring comprises the at least
one groove.
5. An assembly according to any one of the preceding claims, wherein the fluid
restricting member is configured to degrade upon being exposed to the environment
of the bore,
wherein at least the portion of the fluid restricting member is removable from
the at least one groove by fluid flow after the fluid restricting member degrades at
least partially.
6. An assembly capable of being disposed in a bore, the assembly comprising:

a sleeve comprising at least one groove having a fluid restricting member
disposed in the at least one groove, wherein the sleeve is capable of being located
exterior to at least part of a base pipe,
wherein at least a portion of the fluid restricting member is capable of being
removed from the at least one groove after being exposed to an environment of the
bore to form a bypass to a tubing valve.
7. An assembly according to claim 6, wherein the sleeve is positioned
substantially adjacent to the base pipe and is configured to form a seal with the base
pipe.
8. An assembly according to claim 6 or 7, further comprising:
the tubing valve configured to cooperate with the fluid restricting member to
form a seal before at least the portion of the fluid restricting member is removed from
the at least one groove.
9. An assembly according to claim 8, wherein the tubing valve comprises a ring
and an assembly sleeve, the ring being coupled to an assembly housing, the
assembly sleeve being configured to cooperate with the fluid restricting member to
restrict fluid flow at least partially before at least the portion of the fluid restricting
member is removed from the at least one groove.
10. An assembly according to any one of the preceding claims, wherein the fluid
restricting member is configured to restrict fluid flow for a pre-selected amount of time
after the fluid restricting member is exposed to the environment of the bore.
11. An assembly capable of being disposed in a bore, the assembly comprising:
a base pipe having an inner wall defining a flow path;
an assembly housing having an outer wall, the assembly housing being
disposed exterior to the base pipe;
at least one groove positioned between the inner wall of the base pipe and the
outer wall of the assembly housing;

a fluid restricting member disposed in the at least one groove;
an assembly sleeve positioned between the fluid restricting member and the
assembly housing, the assembly sleeve being capable of cooperating with the fluid
restricting member to restrict fluid flow at least partially,
wherein at least a portion of the fluid restricting member is capable of being
removed from the at least one groove after being exposed to an environment of the
bore to allow fluid to bypass the assembly sleeve.
12. An assembly according to claim 11, wherein the fluid restricting member is
capable of degrading a first pre-set threshold amount upon being exposed to the
environment of the bore to allow fluid to bypass the assembly sleeve,
wherein at least the portion of the fluid restricting member is capable of being
removed from the at least one groove by fluid flow after degrading a second pre-set
threshold amount.
13. An assembly according to any one of claims 1 to 5,11 or 12, wherein the base
pipe comprises the at least one groove in an outer wall of the base pipe.
14. An assembly according to any one of claims 1 to 5, 11 or 12, further
comprising a sleeve disposed exterior to at least part of the base pipe, the sleeve
comprising the at least one groove.
15. An assembly according to any one of the preceding claims, wherein the fluid
restricting member comprises at least one of:
polylactic acid;
asphalt compounds;
paraffin wax;
polycaprolactone; or
poly-3-hydroxybutyrate.

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 restricting
member may be positioned in a groove located between an inner wall of a base pipe
and an outer wall of an assembly housing that is exterior to the base pipe. The fluid
restricting member can cooperate with at least part of the tubing valve to block fluid
flow and pressure equalization before at least a portion of the fluid restricting member
is removed from the grove.