Cgg Services Sa

Seabed Geosolutions B.v.

Cgg Services Sas

Cggveritas Services S.a.

Seabed Geosolutions as

Total Sa

Thales

Totalenergies Onetech

Total Se

Pxgeo UK Limited

Postic, Erwan Francois Marie

Thierry Brizard

Jonathan Grimsdale

Antoine Lelaurin

Robert Dowle

Alice Hervé

Erwan Francois Marie Postic

Erwan Postic

Jean-Paul Gruffeille

Peter Maxwell

Abdelkrim Talaalout

Salvador Rodriguez

David Maillotte

Alice HervÉ

Seismic autonomous underwater vehicles (AUVs) for recording seismic signals on the seabed. The AUV may be negatively buoyant and comprise an external body (which may be formed of multiple housings) that substantially encloses a plurality of pressure housings. Portions of the external body housing may be acoustically transparent and house one or more acoustic devices for the AUV. The AUV may comprise a main pressure housing that holds substantially all of the electronic components of the AUV, while a second and third pressure housing may be located on either side of the main pressure housing for other electronic components (such as batteries). A plurality of external devices (such as acoustic devices or thrusters) may be coupled to the main pressure housing by external electrical conduit. The AUV may comprise fixed or retractable wings for increased gliding capabilities during subsea travel.

Ocean bottom seismic autonomous underwater vehicle

Disclosed is an ocean bottom seismic node for recording seismic signals on the seabed. The ocean bottom seismic node may comprise an arched cathedral buoyant body coupled to a substantially flat bottom metal plate. The buoyant body may be formed of hard plastic (such as plastic injection in a mold) and have one or more cathedral type inner structures with columns that form a plurality of interconnected inner chambers, which may be dry or filled with foam and/or act as ballasts. One or more electronic components may be directly attached to the bottom metal plate (and within one or more of the internal cathedral chambers) and covered/protected by the buoyant body that is water and pressure resistant at seabed depths. The edge(s) of the buoyant body may seal around the metal plate on one or more peripheral edges of the plate and buoyant body.

Cathedral body structure for an ocean bottom seismic node

A method for cycling autonomous underwater vehicles (AUVs) that record seismic signals during a marine seismic survey. The method includes deploying plural current AUVs on the ocean bottom; recording the seismic signals during the marine seismic survey with plural current AUVs; releasing from an underwater base a new AUV to replace a corresponding current AUV from the plural current AUVs; recovering the current AUV; and continuing to record the seismic signals with the new AUV.

Methods and underwater bases for using autonomous underwater vehicles for marine seismic surveys

An autonomous underwater vehicle (AUV) for guiding other AUVs during a marine seismic survey. The guiding AUV includes a housing; a propulsion system located inside the housing; and an acoustic positioning system attached to an outside the housing. The acoustic positioning system emits at least three chirps from three different locations.

AUV based seismic acquisition system and method

An underwater base handles an autonomous underwater vehicle. The underwater a support structure to be hooked to a cable, a storing part configured to store the AUVs, an inlet part located above the storing part and configured to control access of the plural AUVs to the storing part, and a control part configured to control a movement of the inlet part relative to the support structure. The control part is further configured to wirelessly guide the AUVs while approaching the inlet part.

Methods and underwater bases for using autonomous underwater vehicle for marine seismic surveys

A system and method for performing a marine seismic survey of a subsurface. The method includes deploying under water, from a deploying vessel, an autonomous underwater vehicle (AUV); recording with seismic sensors located on the AUV seismic waves generated by an acoustic source array; instructing the AUV to surface at a certain depth relative to the water surface; recovering the AUV by bringing the AUV on a recovery vessel; and transferring recorded seismic data to the recovery vessel.

Deployment and recovery of autonomous underwater vehicles for seismic survey

A method and sensor device for recording seismic data. The sensor device includes a top section and a bottom section removably attached to the top section through a connecting plug. The bottom section holds a coupling material that is released into ground upon the bottom section impacting the ground.

Seismic coupling system and method

A buoy for recording seismic signals while underwater. The buoy includes a body; a buoyancy system configured to control a buoyancy of the body to descend to a predetermined depth (H); a propulsion system configured to actively adjust a position of the body at a given position (X, Y); a seismic sensor located on the body and configured to record the seismic signals; and a control device configured to control the buoyancy system to maintain the body substantially at the predetermined depth (H) and to control the propulsion system to maintain the body substantially at the given position (X, Y) while the buoy records seismic data, and also to instruct the seismic sensor when to record seismic signals.

Actively controlled buoy based marine seismic survey system and method

An autonomous underwater vehicle (AUV) for recording seismic signals during a marine seismic survey. The AUV includes a body extending along an axis X and having a head portion, a middle portion, and a tail portion, wherein the middle portion is sandwiched between the head portion and the tail portion along the X axis; a cross-section of the middle portion, substantially perpendicular on the X axis, having a triangular-like shape; the head portion including a base portion having the triangular-like shape and configured to match the middle portion; the head portion having a tip that, when projected along the X axis on the base portion, substantially coincides with a centroid of the base portion having the triangular-like shape; and a seismic payload located within the body and configured to record seismic signals.

Autonomous underwater vehicle for marine seismic surveys

A seismic survey system for recording seismic data underwater in the presence of underwater currents. The system includes first plural buoys configured to descend in water at a predetermined depth (H) and each having a seismic receiver for recording the seismic data; a first vessel configured to launch the first plural buoys along a first line; and a second vessel configured to recover the first plural buoys at a second line, wherein there is a predetermined distance between the first and second lines. The first plural buoys are configured to travel underwater, at substantially the first predetermined depth (H), from the first line to the second line, due exclusively to the underwater currents.

Buoy based marine seismic survey system and method

An underwater base for handling plural underwater vehicles equipped with seismic sensors for recording seismic signals during a marine seismic survey. The underwater base including a storing part configured to store the plural underwater vehicles; an inlet part located above the storing part and configured to control access of the plural underwater vehicles to the storing part; a control part configured to acoustically guide the plural underwater vehicles to the inlet part; and a support part configured to support the control part, the storing part and the inlet part. The storing part is further configured to receive the plural underwater vehicles as the plural underwater vehicles fall from the inlet part into the storing part.

An autonomous underwater vehicle (AUV) is configured to record seismic signals during a marine seismic survey. The AUV includes a body having a base (B) and first and second sides (A, C), the body having a head part and a tail part; a propulsion system for guiding the AUV to a final target on the ocean bottom; a seismic sensor configured to record seismic signals; and an anchoring system configured to rock or twist the base in a given sequence so that the base (B) penetrates into the ocean bottom.

Autonomous underwater vehicle and method for coupling to ocean bottom during marine seismic survey

An autonomous underwater vehicle (AUV) for recording seismic signals during a marine seismic survey. The AUV includes a body having a flush shape; an intake water element located on the body and configured to take in water; at least one propulsion nozzle located on the body and configured to eject the water from the intake water element for actuating the AUV; at least one guidance nozzle located on the body and configured to eject water to change a traveling direction of the AUV; and a seismic payload located on the body of the AUV and configured to record seismic signals.

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Massy, France

Thierry Brizard