横波分裂各向异性裂缝检测的层剥离法探讨  

Shear wave splitting anisotropy layer fracture detection method of stripping

作　　者：毛树林[1] 唐波[1] 

机构地区：[1]成都理工大学

出　　处：《内蒙古石油化工》2010年第7期113-115,共3页Inner Mongolia Petrochemical Industry

摘　　要：根据横波分裂的特点和信息,可以预测裂缝发育的方位和密度参数。在裂缝油气藏中,这2个参数对提高油气采集率具有重要意义。当研究的目标层以上的盖层中,存在不止一个含裂缝各向异性层时,转换波就会发生多次分裂,因此就必须消去盖层各向异性的影响,以获得目标层位的各向异性裂缝检测信息,这种情况下层剥离法就可以很好的实现,方法实现是通过一系列奇异值分解(SVD)或者旋转实现的。同时利用理论模型来验证层剥离法的效果,并利用层剥离法对新场各向异性实际资料处理,对裂缝信息的预测与实际资料相吻合。On the basis of feature and information of shear wave splitting,the azimuth and density parameter of the fracture can be anticipated.The two parameters make important sense to enhanced oil and gas recovery in the fractured reservoir.When there are more than one anisotropy fractured layers in the overburden above the target stratum,so the effect of the overburden anisotropy need be bucked in order to abtain the fractured information of the target stratum.Layer stripping can achieve under such circumstances.The method can be achieved through a series of SVD or rotating to achieve.At the same time using a theoretical model verified the effect of layer stripping,and using the method process the XinChang anisotropy data.The anticipated fracture information is in accord with the actual data.

关 键 词：横波分裂 各向异性 转换波 层剥离 裂缝 

分 类 号：P631.443[天文地球—地质矿产勘探]