横波速度计算方法与应用
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摘要
利用地震资料研究储集体速度特征和地震响应时常需要横波速度资料,但由地震采集或测井获得的横波速度资料较少。本文利用常规测井及实验室岩石物理数据,基于Gassmann方程和Xu-White、Kuster-Toksz等岩石物理模型估算横波速度,并应用测井约束反演与叠前波形反演对估算的横波速度进行修正,最终得到符合实际地震波性质的横波速度计算方法。应用结果表明了该方法的可行性。
Transverse wave data is often needed in researching velocity characteristics and seismic response of reservoir. However, the data from seismic acquisition or logging is relatively less. In the paper, transverse wave velocity is estimated from data of conventional logging and laboratory rock physics, based on rock physical models such as Xu-White and Kuster-Toks z, as well as Gassmann equation. After modified by logging constraint inversion and prestack wave form inversion, the calculation method of transverse wave velocity meeting with real seismic wave character is finally obtained. The application results shows that accurate transverse wave velocity can be obtained in the areas where is lack of geophysical transverse wave data.
Transverse wave data is often needed in researching velocity characteristics and seismic response of reservoir. However, the data from seismic acquisition or logging is relatively less. In the paper, transverse wave velocity is estimated from data of conventional logging and laboratory rock physics, based on rock physical models such as Xu-White and Kuster-Toks z, as well as Gassmann equation. After modified by logging constraint inversion and prestack wave form inversion, the calculation method of transverse wave velocity meeting with real seismic wave character is finally obtained. The application results shows that accurate transverse wave velocity can be obtained in the areas where is lack of geophysical transverse wave data.
引文
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[2]王玉梅,苗永康,孟宪军.岩石物理横波速度曲线计算技术.油气地质与采收率,2006,13(4):58～61
[3]云美厚,管志宁.储层条件下砂岩纵波和横波速度的理论计算.石油物探,2002,41(3):289～292
[4]Franklyn K.Levin著.张仪宁译.由纵波和转换波资料估计横波速度.石油物探译丛,1999,5:47～49
[5]李生杰.油气水速度及其影响因素.新疆地质,2006,4(3):292～296
[6]李红梅,韩文功.济阳坳陷横波速度研究及应用.物探与化探,2003,27(5);362～365
[7]马中高,解吉高.岩石的纵横波速度与密度的规律研究.地球物理进展,2005,20(4):905～910
[8]刘海涛,魏岩俊.应用希尔伯特变换求取横波速度的尝试.人民长江,2002,33(6);31～32
[9]张树林,姜立红.中国近海四分量地震资料解释及应用.海洋地质与第四纪地质,2001,4;114～119
[10]姜秀娣,魏修成,王健.纵横波速度反演在气层识别中的应用.吉林大学学报:地球科学版,2006,36(1):117～122
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