公开(公告)号：US12130396B2

公开(公告)日：2024-10-29

申请号：US17487206

申请日：2021-09-28

Applicant: Exion, LLC

Inventor： Andre' W. Olivier ,  Ronald K. Barry ,  Nikolaos Bernitsas

IPC: G01V1/38

CPC classification number: G01V1/3808 ,  G01V1/3817 ,  G01V2210/1423 ,  G01V2210/56

Abstract: An autonomous sensor node for undersea seismic surveying is formed as a sphere with density similar to sea water in order to minimize effects of noise. The node is capable of measuring both seismic pressure waves and water-borne particle velocity in three dimensions. The node floats above the seafloor to greatly decrease the impact of shear wave noise contamination generated by seabed waves. The node is attached to an anchor resting on the seabed by a tether. The tether is configured to prevent transfer of any tensile forces caused by shear waves in the seabed stratum from the anchor to the node. The tether may have a varying density along its length to entirely attenuate any force transfer from the seafloor.

公开(公告)号：US12111439B2

公开(公告)日：2024-10-08

申请号：US17323739

申请日：2021-05-18

Applicant: Magseis FF LLC

Inventor： Graham Gillott

IPC: G01V1/38 ,  B63B21/66

CPC classification number: G01V1/3808 ,  B63B21/66 ,  B63B2211/02 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/64

Abstract: A seabed object detection system is provided. The system can include a receiver array. The receiver array can include a plurality of receivers disposed on a plurality of streamers. The plurality of streamers can include a central port side streamer, a central starboard side streamer, an auxiliary port side streamer and an auxiliary starboard side streamer. The system can include a source array. The source array can include a plurality of sources. The plurality of sources can include a central port side source, a central starboard side source, an auxiliary port side source, and an auxiliary port side streamer.

公开(公告)号：US11889760B2

公开(公告)日：2024-01-30

申请号：US16763468

申请日：2018-12-17

Applicant: PGS Geophysical AS

Inventor： David Thomas Booth

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

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

Abstract: A seismic pressure and acceleration sensor can include a hydrophone having a volume encapsulated by an enclosure. The enclosure can include, a pressure-sensitive surface and a pressure-insensitive support structure. The sensor can also include an accelerometer positioned within the encapsulated volume. The accelerometer is mechanically isolated from the pressure-sensitive surface and mechanically coupled to the pressure-insensitive support structure.

公开(公告)号：US11860327B2

公开(公告)日：2024-01-02

申请号：US17573801

申请日：2022-01-12

Applicant: SERCEL

Inventor： Viktor Smirnov ,  Clémence Berthonaud ,  Julien Ribette

IPC: G01V1/28 ,  G01V1/38 ,  G01V1/18

CPC classification number: G01V1/3843 ,  G01V1/186 ,  G01V1/28 ,  G01V2210/1423

Abstract: A method for verticalizing recorded seismic data, the method including recording first data with a particle motion sensor, wherein the particle motion sensor is located on a streamer, and the particle motion sensor is configured to be insensitive to a direct current, recording second data with a gravity motion sensor, wherein the gravity motion sensor is also located on the stream, and the gravity motion sensor is configured to be sensitive to the direct current and temporally synchronous to the particle motion sensor, selecting a cost function that associates corresponding values of the first data and the second data, determining a misalignment angle from maximizing the cost function, wherein the misalignment angle describes a misalignment between corresponding axes of the particle motion sensor and the gravity motion sensor, and correcting seismic data recorded by the particle motion sensor based on the misalignment angle so that the corrected seismic data is verticalized with regard to gravity.

公开(公告)号：US20180106915A1

公开(公告)日：2018-04-19

申请号：US15704835

申请日：2017-09-14

Applicant: PGS Geophysical AS

Inventor： Stig Rune Lennart Tenghamn

IPC: G01V1/18 ,  G01V1/20

CPC classification number: G01V1/186 ,  G01V1/162 ,  G01V1/201 ,  G01V1/38 ,  G01V13/00 ,  G01V2210/1423

Abstract: A system can include a first array of hydrophones and a second array of hydrophones. Each of the hydrophones can include a first detector and a second detector. A sensitivity of the first detector can be matched with a sensitivity of the second detector and a combined sensitivity of the first array of hydrophones can be matched with a combined sensitivity of the second array of hydrophones.

公开(公告)号：US20170299743A1

公开(公告)日：2017-10-19

申请号：US15446328

申请日：2017-03-01

Applicant: PGS Geophysical AS

Inventor： Tilman Kluver ,  Stian Hegna

IPC: G01V1/36 ,  G01V1/38

CPC classification number: G01V1/36 ,  G01V1/368 ,  G01V1/37 ,  G01V1/3808 ,  G01V1/48 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/1427 ,  G01V2210/21 ,  G01V2210/24

Abstract: Estimating an earth response can include deconvolving a multi-dimensional source wavefield from near-continuously recorded seismic data recorded at a receiver position. The deconvolving can include spreading the near-continuously recorded seismic data across a plurality of possible source emission angles. The result of the deconvolution can be the earth response estimate.

公开(公告)号：US20170285197A1

公开(公告)日：2017-10-05

申请号：US15475465

申请日：2017-03-31

Applicant: ION Geophysical Corporation

Inventor： Nikolaos Bernitsas

IPC: G01V1/38

CPC classification number: G01V1/3808 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/169

Abstract: Methods, systems, and apparatuses are disclosed for conducting reconnaissance marine seismic surveys. In one example method of acquiring a marine seismic survey, a plurality of streamers are towed behind an acquisition vessel, the plurality of streamers defining a swath. A source is towed behind the acquisition vessel, and at least one other source is towed outside of the swath of streamers.

公开(公告)号：US09702998B2

公开(公告)日：2017-07-11

申请号：US14311045

申请日：2014-06-20

Applicant: Reeshidev Bansal ,  Anatoly Baumstein ,  Partha S. Routh

Inventor： Reeshidev Bansal ,  Anatoly Baumstein ,  Partha S. Routh

IPC: G01V1/30

CPC classification number: G01V1/303 ,  G01V2210/1423

Abstract: Method for using the full wavefield (primaries, internal multiples and free-surface multiples) in inversion of marine seismic data, including both pressure and vertical velocity data (21), to infer a subsurface model of acoustic velocity or other physical property. The marine seismic data are separated (22) into up-going (23) and down-going (24) wavefields, and both wavefields are inverted in a joint manner, in which the final model is impacted by both wavefields. This may be achieved by inverting both wavefields simultaneously (25), or one after the other, i.e. in a cascaded approach (35→37, or 45→47), for the subsurface properties (26, 38, 48).

公开(公告)号：US09689999B2

公开(公告)日：2017-06-27

申请号：US14550001

申请日：2014-11-21

Applicant: PGS Geophysical AS

Inventor： Didier B. P. Lecerf ,  Nizar Chemingui ,  Alejandro A. Valenciano Mavilio ,  Shaoping Lu

IPC: G01V1/34 ,  G01V1/28 ,  G01V1/38

CPC classification number: G01V1/28 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/56 ,  G01V2210/57

Abstract: Techniques are disclosed relating to geophysical analysis. In one embodiment, a method includes receiving seismic data for a geophysical formation recorded during a seismic survey using one or more seabed sensors and one or more sources. In this embodiment, the method includes determining a seismic gather for a location in the geophysical formation, modifying the seismic gather by interchanging source-receiver definitions for the seismic gather, and imaging the location using the modified gather. In this embodiment, the imaging uses higher-order reflections recorded in the seismic gather. In some embodiments, the method includes separating up-going and down-going wavefields and separately imaging using the up-going wavefield and the down-going wavefield.

公开(公告)号：US09638816B2

公开(公告)日：2017-05-02

申请号：US14396364

申请日：2013-04-23

Applicant: WesternGeco L.L.C.

Inventor： Susanne Rentsch-Smith ,  Ali Ozbek ,  Wouter Gerrit Brouwer ,  Jason Gardner

IPC: G01V1/30 ,  G01V1/36

CPC classification number: G01V1/364 ,  G01V2210/1423 ,  G01V2210/242 ,  G01V2210/30 ,  G01V2210/3246 ,  G01V2210/3248

Abstract: A technique includes receiving sensor data; sorting the data into a gather representation that corresponds to a plurality of shots of an energy source; and determining a signal cone based at least in part on at least one characteristic of the gather representation. The technique includes processing the sensor data in a processor-based machine to attenuate noise to generate data representing a signal based at least in part on the determined signal cone and the gather representation.