Abstract:
A recovery underwater base (1300) for handling an autonomous underwater vehicle (AUV) (1332) equipped with seismic sensors for recording seismic signals during a marine seismic survey. The recovery underwater base (1300) includes a storing part (1330) configured to store the AUV (1332); an inlet part (1320) configured to control access to the storing part (1330); a control part (1310) configured to control the inlet part (1320); and a support part (1340) configured to support the control part (1310), the storing part (1330) and the inlet part (1320) and to prevent a burial of the recovery underwater base if deployed on the ocean bottom. The control part (1310) is further configured to guide the AUV (1332) from the ocean bottom to the inlet part (1320).
Abstract:
An autonomous underwater vehicle (AUV) for guiding other AUVs during a marine seismic survey. The guiding AUV (200) includes a housing (202); a propulsion system (903) located inside the housing (202); and an acoustic positioning system (204) attached to an outside the housing (202). The acoustic positioning system (204) emits at least three chirps from three different locations.
Abstract:
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.
Abstract:
A seismic survey system records seismic signals during a marine seismic survey. The system includes first and second clusters, each including a set of autonomous underwater vehicles (AUVs); each cluster being associated with a corresponding first or second unmanned surface vehicle (USV); and a central control unit located on a floating platform and configured to control the first and second USVs. The first USV follows its own path and the first cluster follows the first USV independent of the second USV or the second cluster.
Abstract:
A buoy is configured to record seismic signals while underwater. The buoy includes a body; a buoyancy system configured to control a buoyancy of the body to descend multiple times to a predetermined depth (H) and then resurface with a controlled speed; and a seismic sensor located in the body and configured to record the seismic signals. The seismic sensor is instructed to record the seismic signals as the buoy travels up and down between the water surface and the predetermined depth.
Abstract:
A method and sensor device for recording seismic data. The sensor device includes a top section (330) and a bottom section (350) removably attached to the top section (330) through a connecting plug (380). The bottom section holds a coupling material (356) that is released into ground upon the bottom section (350) impacting the ground.
Abstract:
Node, system and method for collecting seismic data. A node (300) for collecting seismic data includes a base (302) configured to land on the ocean floor; and a head (304) connected to the base (302) through a connecting member (306) and configured to bury itself into the ocean floor. The head (304) includes a seismic sensor (334a) configured to detect seismic data and first to third burying units (450A- C) configured to bury the head (304).
Abstract:
An autonomous underwater vehicle (AUV) for recording seismic signals during a marine seismic survey. The AUV includes a 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 jet pump group connected to the body and including plural jet pumps; a control device connected to the jet pumps; and a seismic sensor configured to record seismic signals. The jet pump group controls a steering of the AUV by generating water jets according to a given sequence, for proper contact with the bottom.
Abstract:
An autonomous underwater vehicle (AUV) for recording seismic signals during a marine seismic survey. The AUV includes a body having a flush shape; a buoyancy system located inside the body and configured to control a buoyancy of the AUV while travelingunderwater; a processor connected to the buoyancy system and configured to select one of plural phases for the buoyancy system at different times of the seismic survey, wherein the plural phases include a neutral buoyancy, a positive buoyancy and a negative buoyancy; and a seismic sensor for recording seismic signals.
Abstract:
System and method for monitoring a reservoir underwater. The system includes plural nodes, each having a seismic sensor for detecting seismic waves; a remote operated vehicle (ROV) configured to deploy or retrieve the plural nodes to seabed; and an autonomous underwater vehicle (AUV) configured to monitor and exchange data with the plural nodes. At least one node of the plural nodes has a head that houses the seismic sensor and the head is configured to burrow in the seabed, up to a predetermined depth, and the head remains in electrical contact through a connector with a base of the at least one node.