Dual axis geophones for pressure/velocity sensing streamers forming a triple component streamer

    公开(公告)号:US10330806B2

    公开(公告)日:2019-06-25

    申请号:US15645167

    申请日:2017-07-10

    Applicant: SERCEL, INC.

    Abstract: A section of a streamer for acoustic marine data collection, the section comprising a carrier for accommodating seismic sensors, wherein the carrier includes, a single body, a first particle motion sensor located on the single body, and a second particle motion sensor being located on the single body, with a 90° angular offset, about a longitudinal axis of the carrier, relative to the first particle motion sensor; and a tilt sensor coupled to the carrier and having a known direction relative to the first and second particle motion sensors so that the tilt sensor determines an angle of tilt of the carrier about a vertical, wherein the first and second particle motion sensors measure a motion related parameter and not a pressure.

    Dual axis geophones for pressure/velocity sensing streamers forming a triple component streamer

    公开(公告)号:US09733370B2

    公开(公告)日:2017-08-15

    申请号:US13664708

    申请日:2012-10-31

    Applicant: SERCEL, INC.

    CPC classification number: G01V1/184 G01V1/186 G01V1/189 G01V1/38

    Abstract: A seismic streamer includes a sensor comprises an axially oriented body including a plurality of axially oriented channels arranged in opposing pairs; a plurality of hydrophones arranged in opposing pairs in the channels; a pair of orthogonally oriented acoustic particle motion sensors; and a tilt sensor adjacent or associated with the particle motion sensors. The streamer has a plurality of hydrophones, as previously described, aligned with a plurality of accelerometers which detect movement of the streamer in the horizontal and vertical directions, all coupled with a tilt sensor, so that the marine seismic system can detect whether a detected seismic signal is a reflection from a geologic structure beneath the streamer or a downward traveling reflection from the air/seawater interface.

    DEVICE FOR MARINE SEISMIC EXPLORATIONS
    25.
    发明公开

    公开(公告)号:US20240118440A1

    公开(公告)日:2024-04-11

    申请号:US18274718

    申请日:2022-02-04

    Applicant: SERCEL, INC.

    CPC classification number: G01V1/137 G01V1/143

    Abstract: A seismic source for generating seismic waves under water includes an operating head having an operating chamber, a cushion chamber, and discharge ports, a firing chamber attached to the operating head, the firing chamber configured to hold compressed air to be discharged through the discharge ports, and a shuttle assembly having a shaft located within the operating head and configured to prevent the compressed air in the firing chamber to enter the discharge ports when in a close state, and to allow the compressed air in the firing chamber to be discharged through the discharge ports when in an open state. The shaft of the shuttle assembly which extends in both the operating chamber and the cushion chamber, has a channel having a varying depth.

    Low frequency and ultra low frequency seismic source having multiple operating heads for marine exploration

    公开(公告)号:US11598891B2

    公开(公告)日:2023-03-07

    申请号:US17092226

    申请日:2020-11-07

    Applicant: SERCEL INC.

    Abstract: A seismic source having two or more operating heads with a firing chamber pressure vessel of compressed air for generating seismic oscillations at low and ultra-low frequencies (ULF) for marine seismic exploration. The multi-headed sound source increases low frequency signal in ranges from below 1 Hz to around 7 Hz to provide greater penetration of the seismic signal through complex overburden such as salt or basalt, improve velocity model building with methods such as Full Wave Inversion, improve the ability to build blocky reservoir models, and improve resolution by reducing side lobes.

    DEVICE FOR MARINE SEISMIC EXPLORATIONS

    公开(公告)号:US20220252747A1

    公开(公告)日:2022-08-11

    申请号:US17551770

    申请日:2021-12-15

    Applicant: SERCEL, INC.

    Abstract: A seismic source for generating seismic waves under water includes an operating head having an operating chamber, a cushion chamber, and discharge ports, a firing chamber attached to the operating head, the firing chamber configured to hold compressed air to be discharged through the discharge ports, and a shuttle assembly having a shaft located within the operating head and configured to prevent the compressed air in the firing chamber to enter the discharge ports when in a close state, and to allow the compressed air in the firing chamber to be discharged through the discharge ports when in an open state. The shaft of the shuttle assembly which extends in both the operating chamber and the cushion chamber, has a channel having a varying depth.

    Dual axis geophones for pressure/velocity sensing streamers forming a triple component streamer

    公开(公告)号:US11385367B2

    公开(公告)日:2022-07-12

    申请号:US16410418

    申请日:2019-05-13

    Applicant: SERCEL, INC.

    Abstract: A section of a streamer for acoustic marine data collection, the section having a carrier for accommodating seismic sensors, wherein the carrier includes, a single body, a first particle motion sensor located on the single body, and a second particle motion sensor being located on the single body, with a 90° angular offset, about a longitudinal axis of the carrier, relative to the first particle motion sensor; and a tilt sensor coupled to the carrier and having a known direction relative to the first and second particle motion sensors so that the tilt sensor determines an angle of tilt of the carrier about a vertical. The first and second particle motion sensors measure a motion related parameter and not a pressure.

    Method and apparatus for testing a sensor

    公开(公告)号:US09651575B2

    公开(公告)日:2017-05-16

    申请号:US14063290

    申请日:2013-10-25

    Applicant: Sercel, Inc.

    Inventor: John Hepp

    CPC classification number: G01P21/00 G01H3/005 G01V13/00 G01V2210/14

    Abstract: There is a testing device for testing a sensor. The testing device includes a rotating mechanism; a first rotating plate connected to the rotating mechanism so that the first rotating plate rotates around an orbital axis (Z1); a second plate rotatably attached to the first rotating plate at a rotating point, the second plate having a rotational axis (Z2) offset from the orbital axis (Z1) by a predetermined distance R; and a gripping mechanism attached to the second plate and configured to receive and fix the sensor relative to the second plate. The second plate follows a circular trajectory with constant attitude around the orbital axis (Z1).

    Method and apparatus for electrical gap setting for a piezoelectric pressure sensor
    30.
    发明授权
    Method and apparatus for electrical gap setting for a piezoelectric pressure sensor 有权
    压电式压力传感器电隙设定方法及装置

    公开(公告)号:US09464951B2

    公开(公告)日:2016-10-11

    申请号:US14054983

    申请日:2013-10-16

    Applicant: SERCEL INC.

    Inventor: John Hepp

    Abstract: A method for electrically setting a gap for a piezoelectric pressure sensor. The method includes positioning a piezoelectric flex element on a tray; attaching a voltage source to the piezoelectric flex element of a piezoelectric pressure sensor; applying a voltage from the voltage source to the piezoelectric flex element; curing an adhesive between the piezoelectric flex element and the tray while the piezoelectric flex element is deflected by the voltage; and stopping the voltage from the voltage source to the piezoelectric flex element when the adhesive has been cured.

    Abstract translation: 一种用于电压设定压电压力传感器的间隙的方法。 该方法包括将压电柔性元件定位在托盘上; 将电压源附接到压电压力传感器的压电柔性元件; 将来自所述电压源的电压施加到所述压电柔性元件; 固化压电柔性元件和托盘之间的粘合剂,同时压电柔性元件被电压偏转; 并且当所述粘合剂固化时,将所述电压源的电压停止到所述压电柔性元件。

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