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8064286 Seismic streamer array  
Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments,...
7957220 Active steering for marine seismic sources  
A seismic survey system having a source array (11) coupled to a deflector device (15) that controls the position of the source array. A positioning system unit (16) is mounted on the source array...
7800976 Single foil lateral force and depth control device for marine seismic sensor array  
A lateral force and depth control device for a marine streamer includes a housing configured to be coupled within the streamer. A control surface is mounted to the housing such that a rotary...
7793606 Position controller for a towed array  
A position controller capable of controlling the depth or lateral position of a towed array. The position controller comprises a tubular fuselage from which a pair of wings may be extended over a...
7701803 Underwater acoustic positioning methods and systems based on modulated acoustic signals  
Methods and systems for moving seismic streamer steering devices to target positions are disclosed. One method comprises calculating forces required to steer one or more seismic streamer steering...
7660190 Deflector devices  
A deflector device (22) for use with a tow line between a seismic survey vessel and a tow, in particular a seismic streamer or streamer array, in the water behind the vessel comprises a vertically...
7590028 Seabed seismic cables and methods of stabilizing same when deployed on a seabed  
Apparatus and methods for acquiring seismic data using a seabed seismic data cable positioned on a seabed are described, including controlling effect of water flow on the cable during data...
7499373 Apparatus and methods for seismic streamer positioning  
Apparatus, systems and methods for connecting two seismic streamers are disclosed that enable two streamers to be towed in a desired arrangement. One apparatus comprises an elongate member having a...
7468932 System for noise attenuation in marine seismic streamers  
A marine seismic streamer section has at least one strength member positioned in the streamer section, a solid material, which may be a soft compliant solid material, substantially filling the...
7423929 Method for laterally steering streamer cables  
A device and a method for laterally steering a streamer cable towed underwater behind a seismic survey vessel. The device includes a cable-steering assembly rotatably attached to a streamer cable....
7403448 Streamer steering device orientation determination apparatus and methods  
Apparatus and methods for enhancing knowledge of the angle of attack of a streamer steering device are described, one apparatus comprising a seismic streamer having an orientation member including...
7167412 Apparatus for steering a marine seismic streamer via controlled bending  
A marine seismic streamer steering device comprises at least two hinged sections pivotally coupled to each other and connected between two adjacent sections of the seismic streamer, and a bend...
7156035 Deflector devices  
A deflector for offsetting a streamer being towed by its lead-in by a seismic survey vessel comprises a wing-shaped body which is coupled to the lead-in and shaped to produce a sideways force which...
7092315 Device for laterally steering streamer cables  
A device and a method for laterally steering a streamer cable towed underwater behind a seismic survey vessel. The device includes a cable-steering assembly rotatably attached to a streamer cable....
6879542 Device for controlling navigation of a towed submarine object  
A device that allows control of the navigation of a towed underwater device, such as a linear acoustic antenna. The device is equipped with a pair of horizontal wings and a pair of vertical wings....
6775204 Automated cable handling and transport apparatus and vehicle  
There is provided an apparatus and vehicle for laying seismic line cable on the ground, retrieving the cable from near the ground surface, and transporting the cable. The vehicle carries at least...
6532189 Curved float for marine divertors  
An apparatus for providing buoyancy to a towed marine divertor and for reducing drag acting on the divertor as the equipment is towed through water. A float attached to the divertor has a curved...
6525992 Devices for controlling the position of an underwater cable  
A device for controlling the position of an underwater cable comprises a body, first and second actuators, and a pair of wings. The body is stationarily mountable to the underwater cable and the...
6504792 Method and system for deploying and recovering seismic streamers in a marine seismic array  
A system and method for deploying and retrieving streamers behind a tow vessel in a marine seismic array. Each streamer and attached lead-in cable are individually deployed and retrieved into and...
6483775 Bird communications system in a marine seismic cable  
A communication housing for devices external to a solid marine seismic cable, especially for level control devices, comprises an upper housing half and a lower housing half, coupled together around...
6459653 Collapsible depth controller for mounting in relation to seismic cables or similar device  
Collapsible depth controller for mounting in relation to seismic cables or similar devices, comprising two wings, each being rotatably connected to a main body relative to a first axis of rotation...
6456565 System for undersea seismic prospecting  
A system for underwater seismic prospecting or exploration on seafloors, especially deep seafloors, including streamers designed to contain the measurement devices and to lie on the seafloor, in...
6307809 Geophone with optical fiber pressure sensor  
A pressure sensitive optical fiber is enclosed within a pressure chamber. A mass is positioned so as to vary the pressure in the pressure chamber in response to a seismic signal. Variations in the...
6226225 Expandable marine diverter  
An expandible diverter for use in marine seismic operations. The diverter is stored in a retracted position for transport and handling, and is expandible to increase the amount of surface area in...
6173803 High amplitude sound wave generator  
A method and device for generating a high amplitude sound wave is provided. The device includes a housing having an open end. A piston is slidably disposed in the open end of the housing and forms...
6154420 Seismic streamer trim section  
A system for selectively tuning the buoyancy of a marine seismic streamer or underwater cable. Trimming weights are positioned along the streamer cable and can be integrated within a solid buoyancy...
6031789 Magnetic drive subassembly in a depth control device  
A magnetic drive device couples the drive motor of a depth control device or bird, with the axle of the depth control wings. The magnetic drive includes a plurality of permanent magnet pieces...
6016286 Depth control device for an underwater cable  
A depth control device for an underwater cable includes a rotary actuator having a rotating output shaft connected to a swash plate. Rotation of the swash plate by the actuator causes a rocker arm...
6011752 Seismic streamer position control module  
A seismic streamer position control module has been invented having a body with a first end and a second end and a bore therethrough from the first end to the second end for receiving a seismic...
5923616 Communication coil housing for a solid marine seismic cable  
A solid marine seismic cable assembly includes communication coil housings which clamp around a cable in a spaced-apart relationship. The cable has a central axis. Each housing contains at least...
5841733 Acoustic source array system for underwater operation  
An improved acoustic source array system is provided by the invention to generate acoustic signals underwater. The system has an array of acoustic signal sources, such as air guns, towable while...
5747754 Method and apparatus for taking seismic measurements  
Method and apparatus for carrying out seismic survey includes a plurality of spaced apart seismic detecting sensors each having a geophone unit for detecting seismic activities. The sensors are...
5619474 Depth control apparatus  
A depth control apparatus for seismic streamers, comprising a central unit adapted for inserted mounting in the streamer substantially in axial alignment with the streamer, a housing which can...
5329071 Method and device for operation of equipment installed in marine seismic tows  
A method and device for operating special equipment provided in seismic cables, i.e., gun cables and streamers (2, 3) during seismic surveys at sea, whereby energy is supplied through wires (4), or...
5214612 Swing plate latch mechanism  
For confidently coupling towed external devices to a marine seismic cable, a latch mechanism having a novel swing plate to improve the adjustability of the mechanism and provide a positive, clearly...
4860264 Arrangement for carrying out seismic prospection of the sea bed  
Air guns to be fired in water for carrying out seismic prospecting of the sea bed are suspended from a single rigid buoyant-body pararane so that the position of the air guns in the water is not...
4748599 Control device for cables with seismic equipment, especially for gun cables comprising one or several gun arrays  
A device for controlling a seismic cable that is towed behind a vessel (1), so that the cable follows a path that is displaced laterally in relation to the path of the vessel, comprises a frame...
4733378 Active low-profile hydrophone  
An active, low-profile hydrophone for use in aquatic environments having substantially turbulent flow conditions. The hydrophone is generally pisciform such that it may lie substantially flat on...
4719987 Bi-planar pontoon paravane seismic source system  
A bi-planar pontoon paravane is towed by a marine vessel and controls the depth and position of a towed seismic source array. The bi-planar pontoon paravane is made up of a buoyant bridge with...
4711194 Streamer interface adapter cable mounted leveler  
A cable leveling device is attached to a streamer cable by providing an adapter module secured between two seismic streamer cable sections with one of the cable strain members secured to the...
4694435 Vertical marine streamer  
A device for receiving acoustic waves in water and adapted to be positioned vertically in the water in a stable position. The device comprises a tubular element formed of several connected...
4404664 System for laterally positioning a towed marine cable and method of using same  
A marine cable positioning system which includes a plurality of magnetic compasses and a plurality of lateral positioning devices spaced at known intervals along the cable being towed by a marine...
4323989 Wide seismic source  
A wide seismic source for use in marine surveys comprising at least two arrays of seismic sources disposed to be towed in a spaced parallel arrangement. Each array includes an elongated float...
4281402 Marine cable decoupler  
A decoupling apparatus for isolating a towed marine streamer from noise transmitted from the tow vessel. The decoupling device comprises a fluid spring positioned in the tow cable with changes in...
4087780 Offshore marine seismic source tow systems and methods of forming  
Two modifications of an offshore marine seismic energy source tow system are disclosed. Both systems comprise transmitters and receivers therein for continuously measuring the distance between a...
4063213 Methods for accurately positioning a seismic energy source while recording seismic data  
Methods for maintaining a steerable paravane supported seismic energy source, as an air gun, positioned laterally at a precise constant predetermined distance from a geophone mounted on a submerged...
4033278 Apparatus for controlling lateral positioning of a marine seismic cable  
Apparatus for controlling the lateral position of a marine seismic cable relative to water current which is effective through utilization of one or more cable paravanes having a thrust adjustable...
4027616 Protection means for depth control device  
A structure is provided for protecting a depth control device used on a marine seismic cable where the device is of the type having a hull formed in two parts and a pair of wings pivotably mounted...
3961303 Depth controllers with controllable negative and uncontrollable positive lift-producing means  
A depth controller whose streamlined body has only negative variable lift-producing means, such as a pair of vanes that can produce a controllable downward force. Embodied in the controller are...
3943483 Depth controllers for seismic streamer cables with dimension variable lift-producing means  
A depth controller having a streamlined body which comprises retractable and extendable lift producing means, such as a main pair of vanes that can produce a variable negative lift and an auxiliary...
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