基于随机单斜介质的井间时延地震记录模拟  

Simulation Based on Cross-hole Time-Lapse Seismic Record of Random Monoclinic Media

作　　者：唐启军[1] 韩立国[1] 窦喜英[1] 王恩利[2] 刘前坤[3] 

机构地区：[1]吉林大学地球探测科学与技术学院,吉林长春130026 [2]中国石油勘探开发研究院西北分院,甘肃兰州730020 [3]中国国土资源航空物探遥感中心,北京100083

出　　处：《石油天然气学报》2010年第2期261-266,共6页Journal of Oil and Gas Technology

基　　金：国家"973"规划项目(2007CB209603)

摘　　要：以Von Karman型随机裂隙单斜介质为例,模拟了背景纵波速度、裂隙方位角、裂隙分布密度随标准差连续变化时的一系列井间地震记录,并利用相关系数分别研究了上述模型井间地震记录的线性相关性及相像程度。结果表明:随机单斜介质模型正演可以在一定程度上近似井间时延地震,随着标准差的增大,相关系数随之减小,相应的地震记录的线性相关性、相像程度也随之减小。By taking the Von Karman type of random crack monoclinic media as an example,a series of cross-hole seismic records were simulated,which described the background P-wave velocity,fracture azimuth,fracture density with the standard deviation of a continuous change,and the correlation coefficients were used to study the model of cross-hole seismic records of the linear correlation,imaging degree. The results show that the random monoclinic medium forward modeling can be used to a certain extent to approximate the cross-hole time-lapse seismic,with the increasing of standard deviation,correlation coefficient subsequently reduces,the corresponding linear correlation of seismic records,imaging degree decrease with it.

关 键 词：井间观测 随机单斜介质 标准差 相关系数 

分 类 号：P631.44[天文地球—地质矿产勘探]