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公开(公告)号：US11573345B2
公开(公告)日：2023-02-07
申请号：US16793093
申请日：2020-02-18
Applicant: PGS Geophysical AS
Inventor： Stian Hegna , Tilman Kluever
Abstract: An inline source can be used for a marine survey. For example, a marine survey vessel can tow source units in line. The source units can be actuated near-continuously to cause a respective signal emitted by each of the source units to be uncorrelated with signals emitted by other of the source units.
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公开(公告)号：US20220035060A1
公开(公告)日：2022-02-03
申请号：US17204854
申请日：2021-03-17
Applicant: PGS Geophysical AS
Inventor： Stian Hegna
Abstract: Methods and apparatus are described for reducing noise in measurements made by one or more pressure sensors disposed in a cable having a generally longitudinal axis. Estimated axial vibration noise at a location along the cable is determined based at least in part on measurements from one or more motion sensors disposed along the cable. The estimated axial vibration noise is subtracted from pressure sensor measurements corresponding to the location. The result is noise-attenuated pressure sensor measurements corresponding to the location.
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3.发明授权公开(公告)号：US10317553B2
公开(公告)日：2019-06-11
申请号：US14645247
申请日：2015-03-11
Applicant: PGS Geophysical AS
Inventor： Stian Hegna , Gregg Parkes
Abstract: Wavefield separation methods and systems that adjust near-continuous pressure and particle motion wavefields based on distance moved along a vessel track by the sensors when the wavefields were measured are disclosed. Methods and systems correct for the motion of the receivers in towed streamer seismic data in order to obtain a wavefield with approximately stationary-receiver locations. Wavefield separation may then be applied to the wavefield with approximately stationary-receiver locations.
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公开(公告)号：US10267936B2
公开(公告)日：2019-04-23
申请号：US15446328
申请日：2017-03-01
Applicant: PGS Geophysical AS
Inventor： Tilman Kluver , Stian Hegna
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.
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公开(公告)号：US10132946B2
公开(公告)日：2018-11-20
申请号：US14645337
申请日：2015-03-11
Applicant: PGS Geophysical AS
Inventor： Stian Hegna , Gregg Parkes
Abstract: Systems and methods to correct source responses and perform source deghosting of a pressure or particle motion wavefield recorded using near-continuous recording of seismic data along a vessel track with generalize source activation times. The methods and systems receive a near-continuously recorded seismic data and generate a near-continuous wavefield for approximately stationary-receiver locations. Time windows of different temporal lengths are applied to traces of the near-continuous wavefield in approximately stationary-receiver locations in order to compute common-receiver gathers. The common-receiver gathers are corrected source wavefield response and source ghost effects and are combined in weighted sums to generate broadband seismic data.
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Patent Agency Ranking
公开(公告)号：US09921325B2
公开(公告)日：2018-03-20
申请号：US14571656
申请日：2014-12-16
Applicant: PGS Geophysical AS
Inventor： Stian Hegna , Tilman Kluver
CPC classification number: G01V1/36 , G01V2210/1293 , G01V2210/1423 , G01V2210/56
Abstract: This disclosure is directed to systems and methods of wavefield separation based on matching operators that represents the relationship between co-located pressure and particle motions sensors. A pressure wavefield and a particle motion wavefield emitted from a subterranean formation are measured using co-located pressure and particle motion sensors located along one or more streamers of a seismic data acquisition system. A matching operator that relates pressure sensor and particle motion sensor responses for co-located pressure and particle motion sensors is computed based on depth of the co-located pressure and particle motion sensors and on the measured pressure and particle motion wavefields. The matching operator and the measured pressure and particle motion wavefields may then be used to compute up-going and down-going wavefields.
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公开(公告)号：US20170299746A1
公开(公告)日：2017-10-19
申请号：US15412135
申请日：2017-01-23
Applicant: PGS Geophysical AS
Inventor： Stian Hegna , Tilman Kluver
CPC classification number: G01V1/364 , G01V1/38 , G01V2210/324 , G01V2210/3246 , G01V2210/56
Abstract: Noise can be attenuated in marine seismic data from a marine seismic survey. A first near-continuous measurement of a wavefield and a second near-continuous measurement of the wavefield recorded from a marine seismic survey can be equalized, a coherent portion of the equalized second near-continuous measurement can be collapsed, and a noise model can be derived. The noise model can be subtracted from the second near-continuous measurement.
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公开(公告)号：US20170176620A1
公开(公告)日：2017-06-22
申请号：US15344669
申请日：2016-11-07
Applicant: PGS Geophysical AS
Inventor： Jostein Lima , Tilman Kluver , Stian Hegna
IPC: G01V1/38
CPC classification number: G01V1/3861 , G01V1/006 , G01V2210/127
Abstract: Source element of a source subarray can be individually actuated according to an actuation sequence. The actuation sequence can be at least partially based on a relative position of each of the source elements within a particular geometry of the source subarray with respect to a previously actuated source element and a towing velocity of the source subarray.
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公开(公告)号：US20160313366A1
公开(公告)日：2016-10-27
申请号：US15019831
申请日：2016-02-09
Applicant: PGS Geophysical AS
Inventor： Gustav Göran Mattias Südow , Stian Hegna
CPC classification number: G01P21/00 , B63B21/66 , G01C9/02 , G01C21/16 , G01C21/165 , G01P15/02 , G01V1/184 , G01V1/189 , G01V1/201 , G01V1/3808 , G01V3/18 , G01V11/00
Abstract: Included are methods and systems for marine geophysical surveying. A system includes a streamer; a sensor package coupled to the streamer, wherein the sensor package comprises a primary orientation sensor and a complimentary orientation sensor, wherein the complimentary orientation sensor comprises a magnetometer, wherein the primary orientation sensor and the complimentary orientation sensor are capable of collecting data indicative of the orientation of the streamer; and geophysical sensors distributed on the streamer.
Abstract translation: 包括海洋地球物理测量的方法和系统。 系统包括拖缆; 耦合到所述拖缆的传感器封装，其中所述传感器封装包括主要取向传感器和互补定向传感器，其中所述互补定向传感器包括磁力计，其中所述主要取向传感器和所述互补定向传感器能够收集指示 流光的方向; 和分布在拖缆上的地球物理传感器。
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10.发明申请Method For Acquiring and Processing Marine Seismic Data to Extract and Constructively Use the Up-Going and Down-Going Wave-fields Emitted by the Source 有权获取和处理海洋地震数据的方法，用于提取和建设性地使用源头发出的向上和向下的波场公开(公告)号：US20160047930A1
公开(公告)日：2016-02-18
申请号：US14794554
申请日：2015-07-08
Applicant: PGS Geophysical AS
Inventor： Stian Hegna , Gregory Ernest Parkes
CPC classification number: G01V1/36 , G01V1/006 , G01V1/3808 , G01V2210/56
Abstract: A method for marine seismic surveying includes separating up-going and down-going wavefields from seismic energy emitted by at least one marine seismic energy source. The separated up-going and down-going wavefields are propagated from the at least one marine seismic energy source to at least one of a water surface and a common reference depth. One of the up-going and down-going wavefields is phase shifted 180 degrees. The propagated, phase shifted up-going and down-going wavefields are summed.
Abstract translation: 一种用于海洋地震勘测的方法，包括从至少一个海洋地震能源发射的地震能量中分离上下波场。 分离的上下波场从至少一个海洋地震能量源传播到水面和公共参考深度中的至少一个。 其中一个持续下降的波场相移180度。 传播的相移上下波场相加。
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