Seabed Geosolutions B.v.

Seabed Geosolutions as

Pxgeo UK Limited

Bjarne Isfeldt

Arne Henning Rokkan

Geir Valsvik

Jean-Baptiste Danre

Richard Edward Henman

Mariann Ervik

Leif Johan Larsen

Johan Fredrik Næs

Eldar Agdestein

Michael Todd

Martin Farnan

Apparatuses, systems, and methods for the deployment of a plurality of autonomous underwater seismic vehicles (AUVs) on or near the seabed based on acoustic communications with an underwater vehicle, such as a remotely operated vehicle. In an embodiment, the underwater vehicle is lowered from a surface vessel along with a subsea station with a plurality of AUVs. The AUVs are configured to acoustically communicate with the underwater vehicle or a second surface vessel for deployment and retrieval operations. The underwater vehicle and/or second surface vessel is configured to instruct the AUVs to leave the subsea station or underwater vehicle and to travel to their intended seabed destination. The underwater vehicle and/or second surface vessel is also configured to selectively instruct the AUVs to leave the seabed and return to a seabed location and/or a subsea station for retrieval.

Deployment and retrieval of seismic autonomous underwater vehicles

Embodiments of systems and methods for inductively powering seismic sensor nodes are presented. An embodiment of an inductive battery includes a battery cell configured to store charge for use by an external device. The inductive battery may also include a first inductive element coupled to the battery cell, the first inductive element configured to receive current from the battery cell and emit a responsive magnetic field for powering an external device through inductance. In an embodiment the external device is a seismic sensor node.

Inductive power for seismic sensor node

Apparatuses, systems, and methods for guiding and/or positioning a plurality of seismic nodes on or near the seabed by an autonomous underwater vehicle (AUV) or a remotely operated vehicle (ROV). In one embodiment, an underwater vehicle is configured to monitor the deployment of cable connected to a plurality of seismic nodes, including the touchdown monitoring, positioning, and guiding of deployed autonomous seismic nodes or ocean bottom cable. The underwater vehicle may comprise a propulsion system configured to steer and propel the vehicle in a body of water, a tracking system configured to automatically track the cable and/or attached seismic nodes, and a guidance system configured to communicate with a surface vessel node data in real time or near real time for active guidance and/or positioning of the deployment cable.

Touch down monitoring of an ocean bottom seismic node

A method and geophysical acceleration sensor () for measuring seismic data and also for protecting the sensor from shock. The sensor includes a housing (); a flexible beam () having a first end fixedly attached to the housing; a piezoelectric layer () attached to the flexible beam; a seismic mass () attached to the flexible beam; and a first movement limiter () 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.

Geophysical acceleration sensor and method

Systems, methods, and apparatuses related to automatically and simultaneously charging a plurality of autonomous seismic nodes on a marine vessel before and/or after deployment to the seabed are disclosed. A plurality of autonomous seismic nodes are simultaneously charged in a CSC approved ISO container. Each autonomous seismic node may comprise a plurality of power connectors, a plurality of rechargeable batteries, and a battery management system. Each of the nodes may be configured to couple with a charging system on the marine vessel, which may include a power source, one or more power/charging stations, one or more power connectors, and a network. The node may have a plurality of power connectors disposed within a plurality of grooves that are configured to couple with a plurality of charging rails for simultaneous charging.

Growing community of inventors

Mathopen, Norway

Bjarne Isfeldt