黏弹VTI介质井间地震高斯束波场正演数值模拟  

Forward numerical modeling of cross-well seismic gaussian beam wave field inviscoelastic VTI media

作　　者：罗浩 杨飞龙 李辉峰 赵驰 赵冲 张雪 LUO Hao;YANG Fei-long;LI Hui-feng;ZHAO Chi;ZHAO Chong;ZHANG Xue(College of Earth Science and Engineering,Xi’an Shiyou University,Xi’an 710065,China;Shaanxi Key Laboratory of Hydrocarbon Accumulation Geology,Xi’an 710065,China)

机构地区：[1]西安石油大学地球科学与工程学院,西安710065 [2]陕西省油气成藏地质学重点实验室,西安710065

出　　处：《地球物理学进展》2020年第4期1431-1437,共7页Progress in Geophysics

基　　金：陕西省教育厅科研计划项目资助(19JK0661,19JK0668);陕西省高校科协青年人才托举计划项目资助(20190704);陕西省自然科学基础研究计划项目资助(2019JQ-817);西安石油大学研究生创新与实践能力培养项目(YCS18212036,YCS18212037)联合资助。

摘　　要：为了研究黏弹VTI介质井间地震波的波场特征,理论分析地震波在黏弹VTI介质中传播特性的基础上,编程实现高斯射线束方法对黏弹VTI介质井间地震波场的正演模拟.为将黏弹VTI介质和完全弹性各向同性介质正演记录进行对比,将黏弹VTI介质的黏弹性参数和各向异性参数设定为零,得到完全弹性各向同性介质下的正演结果.两种介质正演结果对比显示的差异与地震波理论完全一致,证明了所研究的黏弹VTI介质井间地震高斯束正演数值模拟的正确性,为井间地震复杂介质地震波场研究提供了借鉴.In order to study the wave field characteristics of cross-well seismic wave in viscoelastic VTI media,on the basis of the theoretical analysis of the propagation characteristics of seismic waves in viscoelastic VTI media,programing to achieve the forward modeling of the cross-well seismic wave field in viscoelastic VTI media by the Gaussian beam method.In order to compare the forward recording of the viscoelastic VTI media with the forward recording of the Complete elastic isotropic media,the viscoelastic parameters and anisotropy parameters of the viscoelastic VTI media are set to zero,and the forward results in a complete elastic isotropic media are obtained.The difference between the forward results of the two media is completely consistent with the seismic wave theory,which proves the correctness of forward numerical modeling of cross-well seismic gaussian beam in viscoelastic VTI media,and provides a reference for the cross-well seismic wave field research of the complex media.

关 键 词：黏弹VTI介质 井间地震 高斯束 正演模拟 

分 类 号：P631[天文地球—地质矿产勘探]