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公开(公告)号：US20210055440A1
公开(公告)日：2021-02-25
申请号：US17068648
申请日：2020-10-12
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand
IPC: G01V1/38
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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12.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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公开(公告)号：US10969509B2
公开(公告)日：2021-04-06
申请号：US16000542
申请日：2018-06-05
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand
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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Patent Agency Ranking
公开(公告)号：US20190056522A1
公开(公告)日：2019-02-21
申请号：US16055943
申请日：2018-08-06
Applicant: PGS Geophysical AS
Inventor： Stig Rune Lennart Tenghamn , Manuel Beitz , Christian Strand
IPC: G01V1/38
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：US20180164457A1
公开(公告)日：2018-06-14
申请号：US15823221
申请日：2017-11-27
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand
Abstract: Techniques are disclosed relating to configuring a marine seismic survey. In some embodiments, a vessel may be coupled to one or more seismic sources and one or more seismic streamers, and a second vessel may be coupled to one or more far offset seismic sources. The near offset sources may be configured to actuate according to a shot point interval; the far offset sources may be configured to actuate according to a longer shot point interval. In some embodiments, the longer shot point interval may be a multiple of the near offset source shot point interval. Determining the first and second shot point intervals may be based in part on, for example, the wave frequencies of the far offset sources, the requirements of a full wave inversion process, or various configurational parameters of seismic surveys.
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公开(公告)号：US20180052248A1
公开(公告)日：2018-02-22
申请号：US15627508
申请日：2017-06-20
Applicant: PGS Geophysical AS
Inventor： Manuel Beitz , Christian Strand , Rolf Huibert Baardman
IPC: G01V1/38
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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公开(公告)号：US20240418893A1
公开(公告)日：2024-12-19
申请号：US18820248
申请日：2024-08-29
Applicant: PGS Geophysical AS
Inventor： Stig Rune Lennart Tenghamn , Neil Paddy , Manuel Beitz
Abstract: A vessel is configured to tow a marine seismic source, a spread of standard-offset streamers, and a long-offset streamer in a manner such that: a standard streamer maximum offset, measured from the at least one source to an aft-most receiver in the standard-offset streamers, is not more than 20 km; and a long-offset streamer maximum offset, measured between the at least one source and an aft-most receiver in the long-offset streamer, is longer than the standard streamer maximum offset and is between 12 km and 40 km. In some embodiments, the long-offset streamer and the standard-offset streamers are coupled to a same spreader line. In other embodiments, the long-offset streamer is coupled to the vessel by a long-offset lead-in line. In still other embodiments, the standard-offset streamers are coupled to a first spreader line, and the long-offset streamer is coupled to a second spreader line disposed aft of the first spreader line.
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公开(公告)号：US12105238B2
公开(公告)日：2024-10-01
申请号：US17253534
申请日：2019-06-19
Applicant: PGS GEOPHYSICAL AS
Inventor： Stig Rune Lennart Tenghamn , Neil Paddy , Manuel Beitz
CPC classification number: G01V1/38 , G01V1/3808 , G01V1/3843 , G01V3/17 , G01V11/00 , G01V2210/167
Abstract: A long-offset acquisition system includes a source vessel; a signal source coupled to the source vessel; and a long-offset streamer coupled to a survey vessel and including an aft-most receiver, an offset of the aft-most receiver being at least 12 km. A long-offset acquisition method includes towing a signal source with a source vessel; towing a first long-offset streamer with a survey vessel; and acquiring data with receivers of the first long-offset streamer. A long-offset acquisition method includes towing a signal source with a first survey vessel; towing a long-offset streamer with a second survey vessel, the long-offset streamer having a plurality of receivers; actuating the signal source while an offset between the signal source and at least one of the plurality of receivers is at least 15 km; and acquiring data with receivers of the long-offset streamer.
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