S-变换时频技术在碳酸盐岩孔洞储层预测中的应用  

Prediction of Cave Reservoir in Carbonate Rock Using S-transform Time-Frequency Technology

作　　者：才巨宏[1] 顾汉明[2] 邹文[3] 

机构地区：[1]中国科学院地质与地球物理所,北京100029 [2]中国地质大学地球物理与空间信息学院,武汉430074 [3]成都理工大学,成都610059

出　　处：《地质科技情报》2005年第4期111-113,共3页Geological Science and Technology Information

摘　　要：将高时频分辨率的S-变换应用于碳酸盐岩孔洞储层的地震反射波分析,得到与每一个频率对应的振幅,通过分析与某几个单频率对应的振幅的横向变化特征,可以确定充填流体或气体的孔洞储层引起的地震反射波振幅和频率的变化异常。用上述方法对新疆某工区的碳酸盐岩孔洞储层进行了预测,其预测结果与钻井结果一致。Time-frequency analysis is used to describe the character of seismic reflection frequency induced by cranny and cave reservoir in carbonate rock. S-transform with high time-frequency resolution is applied to analyze seismic wave reflected by cranny and cave reservoir within carbonate rock and the amplitude correspond to each frequency is obtained. By analyzing characters varying along inline of amplitudes corresponding to single frequency, we can recognize the abnormality seismic reflection amplitude and frequency induced by cave reservoir filled with liquid or gas in carbonate rock. The method described above was applied to recognize the cave reservoir in carbonate rock in some area in Xinjiang. The results accord with those of well drilling.

关 键 词：S-变换 孔洞储层 时频分析 

分 类 号：TU457[建筑科学—岩土工程] P631.4[建筑科学—土工工程]