叠前弹性波阻抗反演在储层预测中的应用
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摘要
叠前弹性波阻抗反演是当前地震反演技术的一个热点,它利用叠前道集为输入,以横波、纵波、密度等测井资料为约束,联合反演出与岩性、含油气性相关的多种弹性参数,进而进行储层物性及含油气性综合判定。其反演结果比叠后声阻抗反演,在可信度方面有很大提高,能够获得更多、更敏感有效的数据,可对含油气性进行半定量和定量描述,具有广泛的应用前景。这里介绍了叠前弹性波阻抗反演技术的基本原理和方法,并对新疆某油田实际资料进行反演分析,其结果为储层预测和储量计算提供了重要依据,获得了良好的应用效果。
Prestack elastic-impedance inversion is currently a hotspot on seismic inversion technique,which utilizes different offset gathers data and logging data like S-wave,P-wave,density etc,jointly inverts a variety of elastic parameters which is related to lithology and hydrocarbon potential.This inversion method can determine reservoir properties and hydrocarbon potential,and the inversion result has a great improvement in reliability compared with the post-stack acoustic impedance inversion.It can obtain more sensitive and effective data,helping to describe hydrocarbon potential semi-quantitatively and quantitatively,and has broad application prospects.This paper describes the basic principles and methods of pre-stack elastic impedance inversion and performs an actual data analysis of certain oilfield in Xinjiang.The results shows the goods effects and provide an important basis for reservoir prediction and reserve calculation.
Prestack elastic-impedance inversion is currently a hotspot on seismic inversion technique,which utilizes different offset gathers data and logging data like S-wave,P-wave,density etc,jointly inverts a variety of elastic parameters which is related to lithology and hydrocarbon potential.This inversion method can determine reservoir properties and hydrocarbon potential,and the inversion result has a great improvement in reliability compared with the post-stack acoustic impedance inversion.It can obtain more sensitive and effective data,helping to describe hydrocarbon potential semi-quantitatively and quantitatively,and has broad application prospects.This paper describes the basic principles and methods of pre-stack elastic impedance inversion and performs an actual data analysis of certain oilfield in Xinjiang.The results shows the goods effects and provide an important basis for reservoir prediction and reserve calculation.
引文
[1]杨文采.地球物理反演和地震层析成像[M].北京:地质出版社,1989.
[2]李振春.地震数据处理方法[M].东营:石油大学出版社,2004.
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[4]WHITE L,CASTAGNA J.Stochastic fluid modulus in-version[J].Geophysics,2002,67(6):1835.
[5]王保丽,印兴耀,张繁昌.弹性波阻抗反演及应用研究[J].地球物理学进展,2005,20(1):89.
[6]CONNOLLY P N.Elastic Impedance[J].The Lending Edge,1999,18(4):438.
[7]王新红.弹性波阻抗反演在稠油热采地震监测中的应用[J].地球物理学进展,2007,22(1):186.
[8]李邗,何诚.AVO处理解释和岩性识别[J].物探化探计算技术,2003,25(2):145.
[9]曹孟起,王九拴,邵林海.叠前弹性波阻抗反演技术及应用[J].石油地球物理勘探,2006,41(3):323.
[10]曹谊,娄晓东.弹性波阻抗反演[J].油气地球物理,2003,1(3):29.
[11]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,11(4):385.
[12]SHUEY R T.Simplification of Zeoppritz equations[J].Geophysics,1985,50(4):609.
[2]李振春.地震数据处理方法[M].东营:石油大学出版社,2004.
[3]李景叶,陈小宏,郝振江,等.多波时移地震AVO反演研究[J].地球物理学报,2005,48(4):902.
[4]WHITE L,CASTAGNA J.Stochastic fluid modulus in-version[J].Geophysics,2002,67(6):1835.
[5]王保丽,印兴耀,张繁昌.弹性波阻抗反演及应用研究[J].地球物理学进展,2005,20(1):89.
[6]CONNOLLY P N.Elastic Impedance[J].The Lending Edge,1999,18(4):438.
[7]王新红.弹性波阻抗反演在稠油热采地震监测中的应用[J].地球物理学进展,2007,22(1):186.
[8]李邗,何诚.AVO处理解释和岩性识别[J].物探化探计算技术,2003,25(2):145.
[9]曹孟起,王九拴,邵林海.叠前弹性波阻抗反演技术及应用[J].石油地球物理勘探,2006,41(3):323.
[10]曹谊,娄晓东.弹性波阻抗反演[J].油气地球物理,2003,1(3):29.
[11]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,11(4):385.
[12]SHUEY R T.Simplification of Zeoppritz equations[J].Geophysics,1985,50(4):609.
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