发明名称 |
Seismic Adaptive Focusing |
摘要 |
A method for use in seismic exploration comprises: accessing a set of seismic data representative of a subterranean geological formation and a subsurface attribute model of the subterranean geological formation; performing a wavefield extrapolation on the seismic data in the subsurface attribute model; applying the time-shift extended imaging condition to the extrapolated wavefields; forming shot-indexed, time shift gathers for each image pixel of the subsurface attribute model from the conditioned extrapolated wavefields; adaptively focusing the gathers; and stacking the adaptively focused gathers; and imaging the subterranean geological formation from the stacked, adaptively focused gathers. The method may, in some aspects, be realized by a computing apparatus programmed to perform the method or as a set of instructions encoded on a non-transitory program storage medium that, when executed by a computing apparatus, perform the method. |
申请公布号 |
US2015293248(A1) |
申请公布日期 |
2015.10.15 |
申请号 |
US201514677585 |
申请日期 |
2015.04.02 |
申请人 |
Etgen John Theodore;Chu Chunlei |
发明人 |
Etgen John Theodore;Chu Chunlei |
分类号 |
G01V1/34;G01V1/30;G01V1/36;G01V1/28 |
主分类号 |
G01V1/34 |
代理机构 |
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代理人 |
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主权项 |
1. A method for use in seismic exploration, comprising:
accessing a set of seismic data representative of a subterranean geological formation and a subsurface attribute model of the subterranean geological formation; performing a wavefield extrapolation on the seismic data in the subsurface attribute model; applying the time-shift extended imaging condition to the extrapolated wavefields; forming shot-indexed, time shift gathers for each image pixel of the subsurface attribute model from the conditioned extrapolated wavefields; adaptively focusing the gathers using a processor, the adaptive focusing comprising determining for each trace in the gather the amount of time shift to apply to yield a zero time lag for that trace and applying the determined time shift to each respective trace; stacking the adaptively focused gathers using the processor; and imaging the subterranean geological formation from the stacked, adaptively focused gathers using the processor. |
地址 |
Houston TX US |