Abstract: A method and geophysical acceleration sensor (100) for measuring seismic data and also for protecting the sensor from shock. The sensor includes a housing (102); a flexible beam (104) having a first end fixedly attached to the housing; a piezoelectric layer (108) attached to the flexible beam; a seismic mass (112) attached to the flexible beam; and a first movement limiter (130) connected to the housing and configured to limit a movement of the flexible beam. A distance between a tip of the first movement limiter and the flexible beam is adjustable.
Type:
Grant
Filed:
December 18, 2013
Date of Patent:
November 21, 2017
Assignee:
Seabed Geosolutions AS
Inventors:
Geir Valsvik, Arne Rokkan, Eldar Agdestein, Bjarne Isfeldt
Abstract: 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.
Type:
Grant
Filed:
July 10, 2015
Date of Patent:
November 21, 2017
Assignee:
Seabed Geosolutions AS
Inventors:
Thierry Brizard, Alice Herve, Jonathan Grimsdale, Robert Dowle
Abstract: 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.
Type:
Application
Filed:
July 10, 2015
Publication date:
November 26, 2015
Applicant:
Seabed Geosolutions AS
Inventors:
Thierry Brizard, Alice Herve, Jonathan Grimsdale, Robert Dowle
Abstract: 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.
Type:
Grant
Filed:
September 14, 2012
Date of Patent:
July 28, 2015
Assignee:
Seabed Geosolutions AS
Inventors:
Thierry Brizard, Alice Herve, Jonathan Grimsdale, Robert Dowle