叠前AVA参数反演方法及精度分析
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摘要
叠前反演以其多信息性和良好的保真性在岩性油气藏的勘探与开发中占据着越来越重要的地位。本文讨论了叠前AVA地震参数反演的方法,有P波单分量反演、S波单分量反演及PP波PS波联合反演。以振幅特征方程为基础对单个CMP点地震记录用这三种方法进行反演,得到此CMP点目的层段内的纵横波速度、密度等岩性参数,并对比分析了各种方法的精度。
Pre-stack inversion plays an increasingly important role in the litho logic reservoirs' exploration and development for its multi-information and good fidelity.This thesis discussed pre-stack AVA seismic parameter inversion method based on the waveform,including PP inversion,PS inversion and joint PP and PS seismic inversion.Based on Zoeppritz equation of VTI media,inverse the seismic record of a CMP in three ways exclusively.Thus we get the some parameters,such as P-wave velocity,S-wave velocity,density and so on.
Pre-stack inversion plays an increasingly important role in the litho logic reservoirs' exploration and development for its multi-information and good fidelity.This thesis discussed pre-stack AVA seismic parameter inversion method based on the waveform,including PP inversion,PS inversion and joint PP and PS seismic inversion.Based on Zoeppritz equation of VTI media,inverse the seismic record of a CMP in three ways exclusively.Thus we get the some parameters,such as P-wave velocity,S-wave velocity,density and so on.
引文
[1]李录明,罗省贤.多波多分量地震勘探原理及数据处理方法[M].成都:成都科技大学出版社,1997:25.
[2]苑书金.叠前地震反演技术的进展及其在岩性油气藏勘探中的应用[J].地球物理学进展,2007,22(3):879～886.
[3]王明春,李录明,罗省贤.TI介质多波AVA联合反演岩性参数及应用[J].天然气工业,27(4):49～52.
[4]王明春.VTI介质多波叠前联合反演岩性参数方法及应用[D].成都理工大学,2007.
[2]苑书金.叠前地震反演技术的进展及其在岩性油气藏勘探中的应用[J].地球物理学进展,2007,22(3):879～886.
[3]王明春,李录明,罗省贤.TI介质多波AVA联合反演岩性参数及应用[J].天然气工业,27(4):49～52.
[4]王明春.VTI介质多波叠前联合反演岩性参数方法及应用[D].成都理工大学,2007.
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