Method and device (200) for cleaning a marine seismic equipment (202). The device (200) includes a body (204), a propulsion system (206, 220) for moving along the streamer, a cleaning device (308) for cleaning the equipment, and a control device (350) for controlling a movement of the device. ...

A streamer usable underwater for marine seismic surveys is covered by a removable skin to prevent bio-fouling deposits on its outer surface. The removable skin includes a flexible material charged with a biocide substance or has foul release properties,and a closure system configured to join sides of the flexible...

Method and streamer/source head-float system for connecting to a head portion of a streamer or to a lead-in or providing information about a source. The system includes a head-buoy configured to float in water and connected through a cable to the head portion of the streamer or to the lead-in; a head-float confi...

A correlated sparse nodes and mini-streamers system (300) for collecting seismic data includes plural nodes (330) distributed on the ocean bottom, and a mini-streamer spread (320) that includes plural mini-streamers (322). The plural nodes (330) and the mini-streamer spread (320) are configured to simultaneously col...

A geothermal plant (1600, 1700, 1800, 2000), for extracting energy from a geothermal reservoir (1230) located below the ocean bottom, includes a floating platform (1202); a riser (1240) that extends from a well (1208) drilled into the geothermal reservoir (1230), to the floating platform (1202); an electrical pump (...

An imaging system (400) includes an imager (410) having first and second light sensors (465, 467), the first light sensor (465) being configured to record light in a first wavelength range and the second light sensor (467) being configured to record light in a second wavelength range, an alignment mechanism (440) co...

A heat extraction system (400) for extracting heat from a reservoir, the system including a co-axial tool (420) configured to be placed underground, the co-axial tool (420) having an outer pipe (520) and an inner pipe (510) located within the outer pipe (520), each of the outer pipe (520) and the inner pipe (510) be...

A tool (100) for extracting heat from a reservoir includes a shoe (130) made of a material that withstands temperatures larger than 500 °C, an outer pipe (120) attached to the shoe (130), an inner pipe (110) located within the outer pipe (120) and forming an annulus (112) with the outer pipe (120), the inner pipe (1...