公开(公告)号：US20250060497A1

公开(公告)日：2025-02-20

申请号：US18806957

申请日：2024-08-16

Applicant: PGS Geophysical AS

Inventor： Stian Hegna

IPC: G01V1/34 ,  G01V1/137 ,  G01V1/157 ,  G01V1/30 ,  G01V1/38

Abstract: One or more images of subsurface geological features are generated based on recorded seismic data that contain controlled source components and uncontrolled source components blended together. A current recorded dataset is determined from the recorded seismic data, and one or more iterations of a separation procedure are performed on the current recorded dataset to accumulate isolated controlled source components and isolated uncontrolled source components therefrom. The one or more images are generated based on the isolated controlled source components and on the isolated uncontrolled source components.

公开(公告)号：US20240329269A1

公开(公告)日：2024-10-03

申请号：US18613606

申请日：2024-03-22

Applicant: PGS Geophysical AS

Inventor： Maiza Bekara

IPC: G01V1/38

CPC classification number: G01V1/3861 ,  G01V1/3808 ,  G01V2210/121 ,  G01V2210/1423

Abstract: A system and method controls impulsive source activations in a blended acquisition marine seismic survey. A component of the system generates a sequence of dither values deterministically and stores the sequence of dither values, or source activation indicators derived therefrom, in a non-transitory medium readable by a control system operable to execute shot points during the survey responsive to the values stored in the medium. According to some embodiments, generating the dither values comprises iteratively selecting from a fixed set of candidate dither values to produce a candidate sequence of dither values. The selecting is based on evaluating one or more quantitative measures of randomness and one or more quantitative measures of separation exhibited by at least a portion of the candidate sequence of dither values. Generated sequences improve deblending results by reducing coherence exhibited by the dither values in the sequences.

公开(公告)号：US12099157B2

公开(公告)日：2024-09-24

申请号：US18093131

申请日：2023-01-04

Applicant: PGS Geophysical AS

Inventor： Geir Andre Motzfeldt Drange ,  Ian David Sorby

IPC: G01V1/38 ,  G01V1/22 ,  G01V1/28 ,  G01V1/30 ,  G06F17/18

CPC classification number: G01V1/3808 ,  G01V1/223 ,  G01V1/282 ,  G01V1/307 ,  G06F17/18 ,  G01V2210/32 ,  G01V2210/48

Abstract: One or more first sensors may be configured to sense seismic signals and one or more second sensors may be configured to sense electromagnetic crosstalk signals. The second sensors are not responsive to the seismic signals. The data from the first and second sensors may be recorded as first data and second data, respectively. The first data may be modified based on the second data to remove the electromagnetic crosstalk noise form the seismic data.

公开(公告)号：US12050293B2

公开(公告)日：2024-07-30

申请号：US16713289

申请日：2019-12-13

Applicant: PGS Geophysical AS

Inventor： Christian Vasbø ,  Rune Tønnessen

IPC: G01V1/00 ,  B05D1/02 ,  B05D1/18 ,  B05D1/28 ,  C09D5/16 ,  C09D7/65 ,  C09D175/04 ,  G01V1/20 ,  G01V1/38 ,  C08L91/06

CPC classification number: G01V1/201 ,  B05D1/02 ,  B05D1/18 ,  B05D1/28 ,  C09D5/1625 ,  C09D7/65 ,  C09D175/04 ,  G01V1/38 ,  C08L91/06

Abstract: Embodiments generally relates to marine geophysical surveying. More particularly, the present disclosure relates to treatment of geophysical equipment with medetomidine compounds for reduction of marine growth. A method may comprise combining at least a medetomidine compound and a wax to form a mixture; and forming an outer layer disposed on a marine geophysical equipment, wherein the outer layer comprises the mixture of the medetomidine compound and the wax.

公开(公告)号：US11852770B2

公开(公告)日：2023-12-26

申请号：US16656288

申请日：2019-10-17

Applicant: PGS Geophysical AS

Inventor： Stig Rune Lennart Tenghamn ,  Manuel Beitz ,  Christian Strand

IPC: G01V1/38 ,  B63B35/68

CPC classification number: G01V1/3808 ,  B63B35/68

Abstract: Techniques are disclosed relating to marine geophysical surveys. Various output characteristics of a vibratory source may be modified based on whether a source is targeting an identified portion of a survey area. The portion of the survey area may be detected during the survey or may be pre-identified. In some embodiments, a survey system drives a vibratory source using digital codes having different lengths based on whether the source is targeting an identified portion of a survey area. The disclosed techniques may improve imaging of geology under certain types of formations or may reduce environmental impact, in various embodiments.

公开(公告)号：US11780535B2

公开(公告)日：2023-10-10

申请号：US17105086

申请日：2020-11-25

Applicant: PGS Geophysical AS

Inventor： Jostein Lima

IPC: B63B21/66 ,  G01V1/20

CPC classification number: B63B21/66 ,  G01V1/201

Abstract: Embodiments relate generally to marine geophysical surveying. More particularly, embodiments relate to an underwater application system for application of a streamer coating to a surface of a streamer. An embodiment may comprise a marine geophysical survey system. The marine geophysical survey system may comprise a streamer and an underwater application system operable to apply a streamer coating to the streamer as the underwater application system travels axially along the streamer.

公开(公告)号：US11709288B2

公开(公告)日：2023-07-25

申请号：US16996050

申请日：2020-08-18

Applicant: PGS GEOPHYSICAL AS

Inventor： Endrias G. Asgedom ,  Okwudili Orji ,  Walter Söllner

IPC: G01V1/32 ,  G01V1/30 ,  G01V1/38 ,  G01V1/34

CPC classification number: G01V1/306 ,  G01V1/325 ,  G01V1/345 ,  G01V1/3808 ,  G01V2210/3246 ,  G01V2210/44 ,  G01V2210/45

Abstract: Processes and systems described herein are directed to imaging a subterranean formation from seismic data recorded in a marine survey with moving marine vibrators. The marine vibrators generate random sweeps with random sweep signatures. Processes and systems generate an up-going pressure wavefield from measured pressure and vertical velocity wavefield data recorded in the marine survey and obtain a downgoing vertical acceleration wavefield that records source wavefields, directivity, source ghosts, and random signatures of the random sweeps. The downgoing vertical acceleration wavefield data is deconvolved from the up-going pressure wavefield to obtain a subsurface reflectivity wavefield that is used to generate an image of the subterranean formation with reduced contamination from source wavefields, directivity, source ghosts, and random signatures of the random sweeps.

公开(公告)号：US11692822B2

公开(公告)日：2023-07-04

申请号：US15820069

申请日：2017-11-21

Applicant: PGS Geophysical AS

Inventor： Christian Vasbø ,  Rune Tønnessen ,  Thomas Hauge ,  Par Johansson ,  Mikael Tuved ,  Kaj Andersson ,  Andreas Carlen

IPC: G01C13/00 ,  G01V1/38 ,  B05D1/02 ,  B05D1/18 ,  B05D1/26 ,  B05D1/40 ,  B05D3/00 ,  B05D5/08

CPC classification number: G01C13/00 ,  B05D1/02 ,  B05D1/18 ,  B05D1/26 ,  B05D1/40 ,  B05D3/002 ,  B05D5/08 ,  G01V1/3843

Abstract: Embodiments relate generally to marine geophysical surveying. More particularly, embodiments relate to a wax application system for application of a wax coating to a surface of a streamer. An embodiment may comprise a marine geophysical survey system. The marine geophysical survey system may comprise a streamer and a wax application system operable to receive the streamer on deployment and apply a wax coating to the streamer as the streamer is being deployed from a survey vessel into a body of water.

公开(公告)号：US11662491B2

公开(公告)日：2023-05-30

申请号：US17189128

申请日：2021-03-01

Applicant: PGS GEOPHYSICAL AS

Inventor： Magnus Wangensteen ,  Christian Strand ,  Bertrand Caselitz ,  Edwin Hodges ,  Didier Lecerf

IPC: G01V1/30 ,  G01V1/38

CPC classification number: G01V1/308 ,  G01V1/38 ,  G01V2210/1212 ,  G01V2210/612

Abstract: Methods and apparatus are described for performing a 4D monitor marine seismic survey that repeats a previous survey. A number of sources may be used during the 4D monitor survey that differs from a number of sources that were used during the previous survey. Shot points from the previous survey are repeated by the 4D monitor survey, and additional shot points may be produced during the 4D monitor survey that were not produced during the previous survey. Embodiments enable efficiency and data quality improvements to be captured during 4D survey processes, while preserving repeatability.

公开(公告)号：US11573340B2

公开(公告)日：2023-02-07

申请号：US16809326

申请日：2020-03-04

Applicant: PGS Geophysical AS

Inventor： Robertus Franciscus Hegge ,  Roald G. Van Borselen

IPC: G01V1/00 ,  G01V1/16 ,  G01V1/20 ,  G01V1/38

Abstract: Embodiments relate to a sensor cable that may be reconfigurable to have various combinations of seismic sensors. An apparatus may comprise a sensor cable and seismic sensors distributed throughout a volume of the sensor cable and along all three axes of the sensor cable, wherein the seismic sensors are assigned to sampling groups that are reconfigurable and not hardwired.