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公开(公告)号：US12287199B2
公开(公告)日：2025-04-29
申请号：US18100967
申请日：2023-01-24
Applicant: PGS Geophysical AS
Inventor： Christian Vasbø , Rune Tønnessen , Thomas Hauge , Par Johansson , Mikael Tuved , Kaj Andersson , Andreas Carlen
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.
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公开(公告)号：US12111438B2
公开(公告)日：2024-10-08
申请号：US18130751
申请日：2023-04-04
Applicant: PGS GEOPHYSICAL AS
Inventor： Magnus Wangensteen , Christian Strand , Bertrand Caselitz , Edwin Hodges , Didier Lecerf
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.
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3.发明公开公开(公告)号：US20240134079A1
公开(公告)日：2024-04-25
申请号：US18377237
申请日：2023-10-04
Applicant: PGS Geophysical AS
Inventor： Martin Widmaier , Ashish Misra , Manuel Beitz
CPC classification number: G01V1/3843 , G01V1/282 , G01V1/303 , G01V1/345
Abstract: A marine seismic survey comprises towing a first source and a first streamer spread having a length L behind a first vessel. Sensors in the streamer spread record signals from the first source over a range of offset distances X to X+L. A second source is towed behind a second vessel that does not tow a streamer spread. Sensors in the streamer spread record signals from the second source over a range of offset distances A+L to A+2L. Sensors in the streamer spread do not record signals over a range of offset distances X+L to A+L from any active seismic sources used in the marine seismic survey.
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公开(公告)号：US11899151B2
公开(公告)日：2024-02-13
申请号：US16213214
申请日：2018-12-07
Applicant: PGS Geophysical AS
Inventor： Edwin Hodges , Manuel Beitz
IPC: G01V1/38
CPC classification number: G01V1/3808 , G01V2210/121 , G01V2210/127 , G01V2210/1212 , G01V2210/1214 , G01V2210/61 , G01V2210/612
Abstract: Techniques are disclosed relating to acquisition and imaging for marine surveys. In some embodiments, a transition survey that uses both one or more sources of a first type (e.g., impulsive sources) and one or more sources of a second type (e.g., vibratory sources) may facilitate calibration of prior surveys that use the first type of sources with subsequent surveys that use the second type of source. In some embodiments, the different types of sources may be operated simultaneously at approximately the same location. In some embodiments, signals generated by the sources are separated, e.g., using deconvolution. The signals may then be compared to generate difference information, which in turn may be used to adjust sensor measurements from a previous or subsequent survey. In various embodiments, the disclosed techniques may improve accuracy in images of geological formations and may facilitate transitions to new types of seismic sources while maintaining continuity in 4D surveys.
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公开(公告)号：US11874421B2
公开(公告)日：2024-01-16
申请号：US17068648
申请日：2020-10-12
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand
CPC classification number: G01V1/3808 , G01V1/3843 , G01V1/181 , G01V1/186 , G01V2210/127 , G01V2210/1212 , G01V2210/1293 , G01V2210/1423 , G01V2210/165
Abstract: Techniques and apparatus are disclosed for performing marine seismic surveys. In some embodiments, one or more vessels are used to tow a set of streamers and two or more sources such that a first set of sources consists of all those that are disposed within a first threshold distance from the streamers, and a second set of sources consists of all those that are disposed beyond a second, greater, threshold distance from the streamers. Sources in the first set are activated more frequently than sources in the second set are activated.
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Patent Agency Ranking
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
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.
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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
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.
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公开(公告)号：US11747500B2
公开(公告)日：2023-09-05
申请号：US16103867
申请日：2018-08-14
Applicant: PGS Geophysical AS
Inventor： Arvind Sharma
IPC: G01V1/38
CPC classification number: G01V1/3808 , G01V1/3852 , G01V2210/127 , G01V2210/1293 , G01V2210/1423 , G01V2210/1427
Abstract: A method and apparatus for data acquisition including: acquiring a first set of data for a survey area with streamer receivers on a streamer spread; and simultaneously acquiring a second set of data for the area with ocean bottom receivers, the first and second sets of data together forming a complete dataset for velocity modeling and imaging. A method including: navigating a first propulsion source along a first path in the area, wherein a streamer spread and a first seismic source are coupled to the first propulsion source; navigating a second propulsion source along a second path in the area, wherein a second seismic source is coupled to the second propulsion source; while navigating the first and second propulsion sources, activating at least one of the first and second seismic sources; and acquiring data with receivers on the streamer spread and with ocean bottom receivers distributed throughout the area.
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公开(公告)号：US11673628B2
公开(公告)日：2023-06-13
申请号：US16851395
申请日：2020-04-17
Applicant: PGS Geophysical AS
Inventor： Didier Lecerf
CPC classification number: B63B21/56 , G01V1/3826 , G05D1/0206
Abstract: Marine survey source route configuration can include towing, via a first marine survey vessel, streamers at a first average speed and at an average velocity along a first survey route. A second marine survey vessel can tow a source at a second average speed that is greater than the first average speed along a second survey route that periodically passes over the first survey route and at the average velocity in a direction of the first survey route.
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公开(公告)号：US20230117321A1
公开(公告)日：2023-04-20
申请号：US18081502
申请日：2022-12-14
Applicant: PGS Geophysical AS
Inventor： Maiza Bekara , Lian Duan
Abstract: Techniques are disclosed relating to deblending of sources in multi-source geophysical survey data, including marine or land-based data. Multiple sets of deblended receiver traces are generated by iteratively applying a coherency filter to estimated sets of deblended receiver traces and updating a residual until a termination condition is reached. In some embodiments, applying the coherency filter during a current iteration may include determining coefficients of the coherency filter based on estimated sets of deblended receiver traces from an immediately prior iteration. In further embodiments, applying the coherency filter may include applying a 3D projection filter, such as an fxy projection filter.
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