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    Seismic data acquisition systems and methods
    522.
    发明授权
    Seismic data acquisition systems and methods 有权

    公开(公告)号：US11994641B2

    公开(公告)日：2024-05-28

    申请号：US16551367

    申请日：2019-08-26

    Applicant: Magseis FF LLC

    Inventor： Graham Gillott

    IPC: G01V1/38 ,  G01V1/16 ,  G01V1/18 ,  G01V1/20

    CPC classification number: G01V1/3808 ,  G01V1/162 ,  G01V1/186 ,  G01V1/201

    Abstract: A seismic survey system is provided. The system can include a receiver array including a first streamer and a second streamer. The system can include a first plurality of receivers coupled with the first streamer and a second plurality of receivers coupled with the second streamer. The system can include a main source array including a first main source and a second main source. The system can include an accessory source array including a first accessory source and a second accessory source. The first accessory source can couple with the first main source and the second accessory source can couple with the second main source. The system can include a first lateral cable to couple with a first diverter and with the first main source. The system can include a second lateral cable to couple with a second diverter and with the second main source.

    Seismic pressure and acceleration measurement
    524.
    发明授权
    Seismic pressure and acceleration measurement 有权

    公开(公告)号：US11871675B2

    公开(公告)日：2024-01-09

    申请号：US17893872

    申请日：2022-08-23

    Applicant: PGS Geophysical AS

    Inventor： Stig Rune Lennart Tenghamn ,  David Thomas Booth

    IPC: G01V1/18 ,  G01V1/36 ,  G01V1/20 ,  G01L1/16 ,  H10N30/30 ,  G01V1/38 ,  G01P15/08

    CPC classification number: H10N30/302 ,  G01L1/16 ,  G01P15/08 ,  G01V1/186 ,  G01V1/201 ,  G01V1/3808 ,  G01V2210/1423 ,  G01V2210/32

    Abstract: A plurality of sensors and a controller are disposed in a marine seismic streamer. Each of the sensors comprises an enclosure having two opposing interior walls, first and second piezoelectric elements disposed on the opposing interior walls, a third piezoelectric element disposed on a flexible substrate within the enclosure between the opposing interior walls, a pressure signal output node and an acceleration signal output node disposed on the exterior surface of the enclosure. A combined pressure signal derived from the pressure signal output nodes of the plural sensors is coupled to a pressure signal input of the controller. A combined acceleration signal derived from the acceleration signal output nodes of the plural sensors is coupled to an acceleration signal input of the controller. The streamer may be towed, and the combined pressure and acceleration signals may be recorded in a computer-readable medium.

    Low Cross Feed Marine Sensors
    525.
    发明公开
    Low Cross Feed Marine Sensors 审中-公开

    公开(公告)号：US20230417938A1

    公开(公告)日：2023-12-28

    申请号：US18196789

    申请日：2023-05-12

    Applicant: PGS Geophysical AS

    Inventor： Robert Alexis Peregrin Fernihough

    IPC: G01V1/02 ,  G01V1/20 ,  G01V1/18

    CPC classification number: G01V1/159 ,  G01V1/201 ,  G01V1/186 ,  G01V2210/1427

    Abstract: A marine sensor system includes an enclosure that defines an interior volume. The enclosure is configured to be immersed in water. A sensor having a positive output node and a negative output node is disposed within the interior volume of the enclosure. A first parasitic capacitance between the positive output node and the enclosure is substantially equal to a second parasitic capacitance between the negative output node and the enclosure. A cross feed signal that is propagated through a path in water outside the enclosure is coupled to the output nodes in a balanced manner, which enables a differential amplifier to reject the cross feed noise.

    STEERING OF MARINE EQUIPMENT TOWED BY A VESSEL BY A RUNNING BLOCK
    526.
    发明公开
    STEERING OF MARINE EQUIPMENT TOWED BY A VESSEL BY A RUNNING BLOCK 审中-公开

    公开(公告)号：US20230161064A1

    公开(公告)日：2023-05-25

    申请号：US17908673

    申请日：2021-03-02

    Applicant: SHEARWATER INVEST AS

    Inventor： Erik GODØY

    IPC: G01V1/38 ,  G01V1/20 ,  B63B21/66

    CPC classification number: G01V1/3826 ,  G01V1/201 ,  B63B21/66 ,  G01V1/3861

    Abstract: The present invention relates to the field of marine towing operations for marine seismic survey systems and seismic data gathering. More specifically, the present invention relates to seismic sources and receiver sensor cables, streamers, floats etc., that have means for adjusting and keeping a desired position in an array during a tow behind a vessel. The apparatus comprises a pulley apparatus, being a kind of miming block (1), connected with and supporting marine equipment (3, 3′). The miming block (1) is configured to attach to the deflected lead wire or tow wire (2, 9). It has means for traveling along the wire (2, 9).

    ULTRASONIC CLEANING OF MARINE GEOPHYSICAL EQUIPMENT
    527.
    发明申请
    ULTRASONIC CLEANING OF MARINE GEOPHYSICAL EQUIPMENT 审中-公开

    公开(公告)号：US20180259675A1

    公开(公告)日：2018-09-13

    申请号：US15981827

    申请日：2018-05-16

    Applicant: PGS Geophysical AS

    Inventor： Michael Bo Erneland

    IPC: G01V13/00 ,  B08B1/00 ,  G01V1/38 ,  G01V1/20 ,  B08B3/12

    CPC classification number: G01V13/00 ,  B08B1/002 ,  B08B3/12 ,  G01V1/201 ,  G01V1/3808 ,  G01V1/3843

    Abstract: Various methods and apparatuses for facilitating cleaning of submerged geophysical equipment using sound waves transmitted at ultrasonic frequencies are disclosed. In some embodiments, one or more transducers may be configured to transmit sound at one or more ultrasonic frequencies. The sound at ultrasonic frequencies may be transmitted in the vicinity of submerged geophysical equipment, such as a sensor streamer towed behind a survey vessel. Obstructions (e.g., barnacle larvae) adhering to surfaces of the geophysical equipment may be loosened or removed altogether when ultrasonic transmissions occur within its vicinity. The transducers used to transmit the ultrasonic frequencies may be implemented in various ways, such as being attached to a remote operated vehicle, a cleaning unit, or as being an integral component of the geophysical equipment.

    MULTICOMPONENT STREAMER
    529.
    发明申请
    MULTICOMPONENT STREAMER 审中-公开

    公开(公告)号：US20180172856A1

    公开(公告)日：2018-06-21

    申请号：US15830103

    申请日：2017-12-04

    Applicant: PGS Geophysical AS

    Inventor： Øyvind Hillesund

    IPC: G01V1/20 ,  G01V1/38

    CPC classification number: G01V1/201 ,  G01V1/184 ,  G01V1/186 ,  G01V1/202 ,  G01V1/22 ,  G01V1/3817 ,  G01V1/3826 ,  G01V2001/204 ,  G01V2001/207

    Abstract: A seismic streamer includes an outer sheath that forms an interior region of the seismic streamer of which a portion is filled with a gel or liquid. The streamer also includes at least one stress member placed off-center in the interior region, and multiple sensors mounted proximate to a center of the interior region, where the sensors include a pressure sensor and a motion sensor. The streamer further includes multiple tilt sensors mounted along the interior region. A method of manufacturing a seismic streamer includes placing at least one stress member off-center along a first direction, mounting multiple spacers along the stress member, and affixing sensors to respective spacers, where the sensors include a pressure sensor and a motion sensor. The method further includes mounting tilt sensors along the first direction and affixing an outer sheath to the streamer that forms an interior region of the seismic streamer.

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