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1.发明公开公开(公告)号：US20240012169A1
公开(公告)日：2024-01-11
申请号：US18371040
申请日：2023-09-21
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Martin Widmaier , Andrew Long
IPC: G01V1/38
CPC classification number: G01V1/3852 , G01V1/3808 , G01V2210/1293 , G01V2210/165
Abstract: Methods for performing a marine survey of a subterranean formation using a hybrid combination of ocean bottom seismic (“OBS”) receivers, wide towed sources, and moving streamers are described herein. In one aspect, a sail line separation in a crossline direction is determined based on an average streamer separation and number of streamers. An array of OBS receivers are deposited on a surface of a subterranean formation with an OBS receiver separation that is based on the sail line separation. Wide towed sources and streamers are towed above the array of OBS receivers behind a survey vessel that travels sail lines separated by the sail line separation. The wide towed sources may be activated above the array of OBS receivers. Wavefields reflected from the subterranean formation are recorded at the OBS receivers and receivers located in the streamers as seismic data.
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公开(公告)号：US11294083B2
公开(公告)日：2022-04-05
申请号：US16055943
申请日：2018-08-06
Applicant: PGS Geophysical AS
Inventor： Stig Rune Lennart Tenghamn , Manuel Beitz , Christian Strand
Abstract: Techniques are disclosed relating to geophysical surveying. In various embodiments, a computer system may access seismic data for a geological formation, where the seismic data is recorded, using one or more sensors, during a seismic survey in which a first vibratory source was driven using a first digital code for at least a first time interval. The first digital code, in some embodiments, may include a first plurality of subsections corresponding to portions of the first time interval. In some embodiments, the computer system may image a first location of the geological formation using a correlation of only a first sub-section of the first plurality of sub-sections with the seismic data. Further, in some embodiments, the computer system may image a second location of the geological formation using a correlation of two or more of the first plurality of sub-sections with the seismic data.
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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
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.
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公开(公告)号：US11119230B2
公开(公告)日：2021-09-14
申请号：US16055856
申请日：2018-08-06
Applicant: PGS Geophysical AS
Inventor： Stig Rune Lennart Tenghamn , Manuel Beitz , Christian Strand
Abstract: Techniques are disclosed relating to geophysical surveying. In various embodiments, a marine survey vessel may tow a plurality of streamers that each include a plurality of seismic sensors. Further, the survey vessel may tow a plurality of vibratory sources. In various embodiments, a first sweep may be performed, using one or more of the plurality of vibratory sources, for a first time interval. Further, in various embodiments, disclosed techniques may include recording, during the first time interval using the plurality of seismic sensors, seismic data on a tangible, computer-readable medium, thereby creating a geophysical data product.
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公开(公告)号：US20200150303A1
公开(公告)日：2020-05-14
申请号：US16743664
申请日：2020-01-15
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand , Rolf Huibert Baardman
Abstract: A system for constraining a dither time can comprise a source and a controller coupled to the source. The controller can be configured to actuate the source in sequence, while the source is moving through a fluid volume at a bottom speed, with an actuation time interval between each actuation comprising a sum of a nominal time and a dither time for each actuation and constrain the dither time for each actuation such that a reduction of the actuation time interval relative to a directly precedent actuation time interval is at most a threshold dither time difference, wherein the threshold dither time difference corresponds to a maximum bottom speed.
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Patent Agency Ranking
公开(公告)号：US20190056521A1
公开(公告)日：2019-02-21
申请号：US16055856
申请日：2018-08-06
Applicant: PGS Geophysical AS
Inventor： Stig Rune Lennart Tenghamn , Manuel Beitz , Christian Strand
Abstract: Techniques are disclosed relating to geophysical surveying. In various embodiments, a marine survey vessel may tow a plurality of streamers that each include a plurality of seismic sensors. Further, the survey vessel may tow a plurality of vibratory sources. In various embodiments, a first sweep may be performed, using one or more of the plurality of vibratory sources, for a first time interval. Further, in various embodiments, disclosed techniques may include recording, during the first time interval using the plurality of seismic sensors, seismic data on a tangible, computer-readable medium, thereby creating a geophysical data product.
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公开(公告)号：US20180364384A1
公开(公告)日：2018-12-20
申请号：US16000542
申请日：2018-06-05
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand
IPC: G01V1/38
Abstract: Techniques are disclosed relating to geophysical surveying. In some embodiments, a marine survey vessel tows multiple sensor streamers in addition to vibratory sources deployed relative to the sensor streamers. In some embodiments, the vessel tows vibratory sources emitting energy within different frequency bands in different deployment zones. In some embodiments, one or more sources are driven with different sweep functions, different activation patterns, and/or different sweep lengths. Various disclosed techniques for manufacturing a geophysical data product may potentially simplify equipment used for towing sources, reduce survey complexity without reducing resolution, increase resolution without increasing survey complexity, improve energy content recovered from deep reflections, and/or reduce the environmental impact of emitting seismic energy.
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8.发明授权公开(公告)号：US11802986B2
公开(公告)日：2023-10-31
申请号：US16892557
申请日：2020-06-04
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Martin Widmaier , Andrew Long
IPC: G01V1/38
CPC classification number: G01V1/3852 , G01V1/3808 , G01V2210/1293 , G01V2210/165
Abstract: Methods for performing a marine survey of a subterranean formation using a hybrid combination of ocean bottom seismic (“OBS”) receivers, wide towed sources, and moving streamers are described herein. In one aspect, a sail line separation in a crossline direction is determined based on an average streamer separation and number of streamers. An array of OBS receivers are deposited on a surface of a subterranean formation with an OBS receiver separation that is based on the sail line separation. Wide towed sources and streamers are towed above the array of OBS receivers behind a survey vessel that travels sail lines separated by the sail line separation. The wide towed sources may be activated above the array of OBS receivers. Wavefields reflected from the subterranean formation are recorded at the OBS receivers and receivers located in the streamers as seismic data.
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公开(公告)号：US11604300B2
公开(公告)日：2023-03-14
申请号：US16743664
申请日：2020-01-15
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand , Rolf Huibert Baardman
Abstract: Systems and computer readable media are described that actuate at least one marine seismic source according to a constrained sequence. The sequence exhibits an actuation time or distance interval between each actuation. The actuation time or distance interval corresponds to the sum of a nominal time or distance and a respective dither time or dither distance for each actuation. The sequence is constrained such that differences between consecutive dither times or dither distances remain within a threshold dither difference. Constraining the sequence according to the threshold dither difference enables increased bottom speeds for the source (i.e., increased speeds of the source relative to the seafloor), while still maintaining at least a minimum actuation time or distance interval for the source, taking into account both the nominal time or distance and the respective dither times or dither differences.
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10.发明申请公开(公告)号：US20220179116A1
公开(公告)日：2022-06-09
申请号：US17523284
申请日：2021-11-10
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz
Abstract: Techniques are described for utilizing far offset impulsive source activations in various contexts, including when performing marine seismic surveys, when manufacturing a geophysical data product in conjunction with such surveys, or when generating an image of geological features of a subsurface. According to some embodiments, near offset impulsive source activations are caused in a body of water at each of a plurality of near offset shot points, and composite far offset impulsive source activations are caused in the body of water at each of a plurality of far offset shot points. Each of the composite far offset impulsive source activations comprises a succession of component impulsive source activations occurring over a far offset shot length. The far offset shot length is short enough to satisfy a stationary source assumption for frequencies at or below a maximum frequency of interest for the far offset shot points.
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