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公开(公告)号：WO2017182518A1
公开(公告)日：2017-10-26
申请号：PCT/EP2017/059281
申请日：2017-04-19
Applicant: PGS GEOPHYSICAL AS
Inventor： KLUVER, Tilman , HEGNA, Stian
CPC classification number: G01V1/36 , G01V1/368 , G01V1/37 , G01V1/3808 , G01V1/48 , G01V2210/1293 , G01V2210/1423 , G01V2210/1427 , G01V2210/21 , G01V2210/24
Abstract: Estimating an earthresponsecan includedeconvolving a multi-dimensional source wavefieldfrom near-continuously recorded seismic data recorded ata receiver position. The deconvolving can include spreading the near-continuously recorded seismic dataacross a plurality ofpossible source emission angles. The result of the deconvolution can bethe earth response estimate.
Abstract translation: 估计地球响应可以包括将来自记录在接收器位置处的接近连续记录的地震数据的多维源波场进行解卷积。 去卷积可以包括将接近连续记录的地震数据遍布多个可能的源发射角度。 去卷积的结果可以是地球响应估计值。
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公开(公告)号：WO2020169790A1
公开(公告)日：2020-08-27
申请号：PCT/EP2020/054595
申请日：2020-02-21
Applicant: PGS GEOPHYSICAL AS
Inventor： HEGNA, Stian , KLUVER, Tilman
IPC: G01V1/38
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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Patent Agency Ranking
公开(公告)号：WO2020212490A1
公开(公告)日：2020-10-22
申请号：PCT/EP2020/060709
申请日：2020-04-16
Applicant: PGS GEOPHYSICAL AS
Inventor： HEGNA, Stian , ORJI, Okwudili , OSCARSSON-NAGEL, Mattias
Abstract: Processes and systems described herein are directed to performing marine surveys with a moving vibrational source that emits a continuous source wavefield into a body of water above a subterranean formation. The continuous source wavefield is formed from multiple sweeps in which each sweep is emitted from the moving vibrational source into the body of water with a randomized phase and/or with a randomized sweep duration. Reflections from the subterranean formation are continuously recorded in seismic data as the moving vibrational source travels above the subterranean formation. Processes and systems include iteratively deconvolving the source wavefield from the continuously recorded seismic data to obtain an earth response in the common receiver domain with little to no harmful effects from spatial aliasing and residual crosstalk noise. The earth response may be processed to generate an image of the subterranean formation.
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4.发明申请
公开(公告)号：WO2015158620A1
公开(公告)日：2015-10-22
申请号：PCT/EP2015/057841
申请日：2015-04-10
Applicant: PGS GEOPHYSICAL AS
Inventor： HEGNA, Stian , PARKES, Gregg Ernest
CPC classification number: G01V1/003 , G01V1/28 , G01V1/325 , G01V1/36 , G01V1/3808 , G01V2210/00 , G01V2210/129 , G01V2210/42 , G01V2210/56 , G01V2210/59
Abstract: A method for seismic data acquisition can include near-continuously recording seismic data received from a number of seismic receivers and triggering a plurality of source elements, based upon time and not based upon position,at a predefined sequence of times relative to a start of a near-continuous recording.
Abstract translation: 用于地震数据采集的方法可以包括从多个地震接收器接收的近连续记录的地震数据，并且基于时间而不是基于位置触发多个源元件，并且以预定的顺序相对于 近连续录音。
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公开(公告)号：WO2020212491A1
公开(公告)日：2020-10-22
申请号：PCT/EP2020/060710
申请日：2020-04-16
Applicant: PGS GEOPHYSICAL AS
Inventor： HEGNA, Stian , KLUVER, Tilman
Abstract: Processes and systems for imaging a subterranean formation using continuously recorded seismic data obtained during a marine seismic geophysical survey of the subterranean formation are described herein. The processes and systems compute upgoing pressure data at stationary-receiver locations, and low-frequency noise attenuation processes and systems are applied to the upgoing pressure wavefield data to obtain low-frequency noise attenuated upgoing pressure wavefield data. An image of the subterranean formation, or data indicative thereof, may be generated using the low-frequency noise attenuated upgoing pressure wavefield data at stationary-receiver locations.
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公开(公告)号：WO2018154037A1
公开(公告)日：2018-08-30
申请号：PCT/EP2018/054472
申请日：2018-02-23
Applicant: PGS GEOPHYSICAL AS
Inventor： HEGNA, Stian , SÜDOW, Mattias
Abstract: Alternating current (AC) coupled accelerometer calibration can include acquiring calibrated data from a direct current (DC) coupled accelerometer of a towed object and interpolating the acquired calibrated data to a location of an AC coupled accelerometer of the towed object. AC coupled accelerometer calibration can also include estimating a calibration parameter associated with the AC coupled accelerometer based on the interpolating and correcting for a sensitivity associated with the AC coupled accelerometer using the calibration parameter.
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公开(公告)号：WO2017102872A1
公开(公告)日：2017-06-22
申请号：PCT/EP2016/081051
申请日：2016-12-14
Applicant: PGS GEOPHYSICAL AS
Inventor： LIMA, Jostein , KLUVER, Tilman , HEGNA, Stian
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.
Abstract translation: 源子阵列的源元素可根据致动序列单独致动。 致动序列可以至少部分地基于源子阵列的特定几何形状内的每个源元件相对于先前致动的源元件的相对位置以及源子阵列的牵引速度。
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