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公开(公告)号：US10324210B2
公开(公告)日：2019-06-18
申请号：US15199272
申请日：2016-06-30
摘要： A method comprising for deghosting seismic data is disclosed. The method includes the steps of acquiring seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data and estimating a time-varying wave height above the subsurface area of interest during at least a portion of the survey, wherein the estimation of the wave height is based at least in part on a remote measurement of the wave height during the survey. The estimated time-varying wave height is used to characterize the ghost data and deghost the seismic data based at least in part on the characterized ghost data.
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公开(公告)号：US09784867B2
公开(公告)日：2017-10-10
申请号：US14676389
申请日：2015-04-01
发明人： Richard Coates , Kun Jiao , Zhen Xu , Alan Schiemenz
CPC分类号： G01V1/345 , G01V1/282 , G01V2210/51 , G01V2210/614 , G01V2210/679 , G01V2210/74
摘要： A method includes the steps of receiving a wavefield generated by reflections in a subsurface region and recorded by a plurality of seismic receivers and compensating the recorded wavefield for amplitude attenuation. The method further includes modelling a propagation of a source wavefield forward in time, from an initial time-state to a final time-state through an earth model that is representative of the subsurface region, wherein the modelling includes phase and amplitude effects of attenuation and modelling a propagation of the compensated recorded wavefield backward in time from a final time-state to an earlier time-state through the earth model, wherein the subsurface region has an absorption characteristic that dampens the recorded wavefield wherein the modelling includes phase and amplitude effects of attenuation.
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公开(公告)号：US20180003842A1
公开(公告)日：2018-01-04
申请号：US15199272
申请日：2016-06-30
CPC分类号： G01V1/364 , G01V1/38 , G01V2210/532 , G01V2210/56
摘要： A method comprising for deghosting seismic data is disclosed. The method includes the steps of acquiring seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data and estimating a time-varying wave height above the subsurface area of interest during at least a portion of the survey, wherein the estimation of the wave height is based at least in part on a remote measurement of the wave height during the survey. The estimated time-varying wave height is used to characterize the ghost data and deghost the seismic data based at least in part on the characterized ghost data.
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公开(公告)号：US10514475B2
公开(公告)日：2019-12-24
申请号：US15251866
申请日：2016-08-30
发明人： Richard Coates , Cintia Lapilli , Hannah Flath , Dmitry Kulakov
摘要： A method for processing seismic data includes obtaining a velocity model, determining a critical angle for an interface represented in the velocity model based on a ratio between velocity of the seismic wave on first and second sides of the interface, determining an orientation of a normal vector extending normal to a location of the interface, determining an orientation of an arrival direction vector of a wavefield at the location of the interface, calculating an angle between the normal vector and the arrival direction vector, determining that the angle between the normal vector and the arrival direction vector is greater than the critical angle at the location, and attenuating the wavefield associated with the location in response to determining that the angle between the normal vector and the arrival direction vector is greater than the critical angle at the location.
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公开(公告)号：US20180059274A1
公开(公告)日：2018-03-01
申请号：US15251866
申请日：2016-08-30
发明人： Richard Coates , Cintia Lapilli , Hannah Flath , Dmitry Kulakov
CPC分类号： G01V1/36 , G01V1/28 , G01V1/282 , G01V2210/51 , G01V2210/67
摘要： A method for processing seismic data includes obtaining a velocity model, determining a critical angle for an interface represented in the velocity model based on a ratio between velocity of the seismic wave on first and second sides of the interface, determining an orientation of a normal vector extending normal to a location of the interface, determining an orientation of an arrival direction vector of a wavefield at the location of the interface, calculating an angle between the normal vector and the arrival direction vector, determining that the angle between the normal vector and the arrival direction vector is greater than the critical angle at the location, and attenuating the wavefield associated with the location in response to determining that the angle between the normal vector and the arrival direction vector is greater than the critical angle at the location.
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公开(公告)号：US20160291184A1
公开(公告)日：2016-10-06
申请号：US14676389
申请日：2015-04-01
发明人： Richard Coates , Kun Jiao , Zhen Xu , Alan Schiemenz
IPC分类号： G01V1/34
CPC分类号： G01V1/345 , G01V1/282 , G01V2210/51 , G01V2210/614 , G01V2210/679 , G01V2210/74
摘要： A method includes the steps of receiving a wavefield generated by reflections in a subsurface region and recorded by a plurality of seismic receivers and compensating the recorded wavefield for amplitude attenuation. The method further includes modelling a propagation of a source wavefield forward in time, from an initial time-state to a final time-state through an earth model that is representative of the subsurface region, wherein the modelling includes phase and amplitude effects of attenuation and modelling a propagation of the compensated recorded wavefield backward in time from a final time-state to an earlier time-state through the earth model, wherein the subsurface region has an absorption characteristic that dampens the recorded wavefield wherein the modelling includes phase and amplitude effects of attenuation.
摘要翻译： 一种方法包括以下步骤：接收由地下区域中的反射产生的并由多个地震接收机记录的波场，并补偿记录的波场以进行振幅衰减。 该方法还包括通过代表地下区域的地球模型，在时间上向前推进源波场的传播，从初始时间状态到最终时间状态，其中建模包括衰减的相位和幅度效应，以及 通过地球模型，将补偿后的记录波场的时间从最后的时间状态向后向后模拟，其中地下区域具有吸收所记录的波场的吸收特性，其中建模包括相位和幅度效应 衰减。
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