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.
出处
《石油天然气学报》
CAS
CSCD
北大核心
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)
关键词
井间观测
随机单斜介质
标准差
相关系数
cross-hole observation
random monoclinic medium
standard deviation
Correlation coefficient
