Method and system for seismic data acquisition with top and front sources

    公开(公告)号:US11598894B2

    公开(公告)日:2023-03-07

    申请号:US16854214

    申请日:2020-04-21

    Applicant: SERCEL

    Abstract: A marine seismic data acquisition system includes a streamer spread including plural streamers; a first set of front sources configured to generate seismic waves; a streamer vessel towing the streamer spread and the first set of the front sources, in front of the streamer spread along an inline direction X; a second set of top sources configured to generate additional seismic waves; and first and second source vessels towing the second set of top sources directly above or below the streamer spread. A number NT of the top sources is larger than a number NF of the front sources.

    Fast power on method for marine acquisition streamer

    公开(公告)号:US11480699B2

    公开(公告)日:2022-10-25

    申请号:US16590699

    申请日:2019-10-02

    Applicant: SERCEL

    Abstract: A marine seismic streamer includes plural concentrators, plural segments interposed with the plural concentrators so that a concentrator of the plural concentrators is sandwiched between two segments of the plural segments, a first high-voltage rail HV1 that extends along the plural concentrators and the plural segments, and a second high-voltage rail HV2 that extends along the plural concentrators and the plural segments. In each given concentrator i of the plural concentrators, there is a first switch SW1 placed along one of the first high-voltage rail HV1 and the second high-voltage rail HV2, a second switch SW2 placed between the first high-voltage rail HV1 and the second high-voltage rail HV2, a first local controller implemented in hardware, and a second local controller implemented in a combination of hardware and software, and having an operating system, the first local controller being separated from the second local controller.

    DECENTRALIZED MANAGEMENT OF SEISMIC SOURCE SHOOTING

    公开(公告)号:US20220171080A1

    公开(公告)日:2022-06-02

    申请号:US17109481

    申请日:2020-12-02

    Applicant: SERCEL

    Inventor: Gilles OLLIVRIN

    Abstract: A method for seismic exploration of a subsurface formation with a seismic survey system includes directly receiving a message, at a first fleet of seismic sources, from a second fleet; storing the message at the first fleet; verifying one or more constraints related to the first and second fleets, at the first fleet; initiating a triggering sequence of the seismic sources of the first fleet, upon verification of the one or more constraints, with no input from a central unit of the seismic survey system; and performing a sweep based on the triggering sequence.

    HYBRID CABLE WITH CONNECTING DEVICE

    公开(公告)号:US20210350953A1

    公开(公告)日:2021-11-11

    申请号:US16866826

    申请日:2020-05-05

    Applicant: SERCEL

    Abstract: A hybrid cable for collecting data inside a well includes an electrical cable extending along a longitudinal axis of the hybrid cable, an optical fiber extending along the longitudinal axis, an armor that extends along the longitudinal axis, and encircles the electrical cable and the optical fiber, and a connecting device extending along the longitudinal axis, to enclose the electrical cable and the optical fiber, and to be enclosed by the armor. The connecting device has an unsmooth external surface.

    METHOD AND DEVICE FOR MONITORING THE SUBSOIL OF THE EARTH UNDER A TARGET ZONE

    公开(公告)号:US20210302609A1

    公开(公告)日:2021-09-30

    申请号:US17261933

    申请日:2019-07-03

    Applicant: SERCEL

    Abstract: In order to monitor the subsoil of the earth under a target zone, seismic waves coming from an identified mobile noise source are recorded by means of at least one pair of sensors disposed on either side of the target zone, time periods are selected corresponding to the alignments of the pairs of sensors with the noise source, a seismogram of the target zone is reconstructed by interferometry based on the recorded seismic waves and on the selected time periods and an image of the subsoil of the target zone is generated using the seismogram.

    Docking station for wireless seismic acquisition nodes

    公开(公告)号:US11022708B2

    公开(公告)日:2021-06-01

    申请号:US16569855

    申请日:2019-09-13

    Applicant: SERCEL

    Abstract: A docking station for receiving different types of seismic nodes, the docking station including a frame; a control module attached to the frame plural docking modules attached to the frame, wherein each docking module includes plural docking bays; a monitor attached to the frame and configured to display information about the plural docking modules; and a network connection device attached to the frame and configured to provide data transfer capabilities for each docking bay of the plural docking bays. The plural docking bays are configured to accept interchangeable ports that are compatible with the different types of seismic nodes.

    FAST POWER ON METHOD FOR MARINE ACQUISITION STREAMER

    公开(公告)号:US20210103067A1

    公开(公告)日:2021-04-08

    申请号:US16590699

    申请日:2019-10-02

    Applicant: SERCEL

    Abstract: A marine seismic streamer includes plural concentrators, plural segments interposed with the plural concentrators so that a concentrator of the plural concentrators is sandwiched between two segments of the plural segments, a first high-voltage rail HV1 that extends along the plural concentrators and the plural segments, and a second high-voltage rail HV2 that extends along the plural concentrators and the plural segments. In each given concentrator i of the plural concentrators, there is a first switch SW1 placed along one of the first high-voltage rail HV1 and the second high-voltage rail HV2, a second switch SW2 placed between the first high-voltage rail HV1 and the second high-voltage rail HV2, a first local controller implemented in hardware, and a second local controller implemented in a combination of hardware and software, and having an operating system, the first local controller being separated from the second local controller.

    OCEAN BOTTOM NODE WITH REMOVABLE ACOUSTIC PINGER

    公开(公告)号:US20200326443A1

    公开(公告)日:2020-10-15

    申请号:US16519148

    申请日:2019-07-23

    Applicant: SERCEL

    Abstract: An ocean bottom node for collecting seismic data, the ocean bottom node including a compounded housing including an electronics housing and a pinger housing, electronics located inside the electronics housing, and a battery pack configured to supply electrical power to the electronics. The pinger housing is permanently open to an ambient water while the electronics housing is sealed from the ambient water, and the pinger housing is configured to selectively and directly attach to the electronics housing.

    SEISMIC DATA ACQUISITION WITH DUAL/TRIPLE SOURCES AND HEXA-SOURCE

    公开(公告)号:US20200096662A1

    公开(公告)日:2020-03-26

    申请号:US16139305

    申请日:2018-09-24

    Applicant: SERCEL

    Inventor: Thomas ELBOTH

    Abstract: A method for configuring a multi-source and a hexa-source for acquiring first and second seismic datasets of a subsurface. The method includes selecting a number n of source arrays to create the multi-source; selecting a number m of sub-arrays for each source array, each sub-array having a plurality of source elements; imposing a distance D between any two adjacent source arrays of the multi-source; calculating a distance d between any two adjacent sub-arrays of a same source array so that bins associated with the first and second seismic datasets are interleaved; selecting source elements from at least six different sub-arrays of the n source arrays to create the hexa-source; and firing the multi-source to acquire the first dataset, and firing the hexa-source to acquire the second dataset.

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