含气层纵波声速与孔隙度、泥质含量和含水饱和度的关系  

Relations of P-wave Velocity with Porosity,Shale Content and Water Saturation in Gas Zone.

作　　者：李艳华[1] 楚泽涵[1] 

机构地区：[1]石油大学

出　　处：《测井技术》2000年第3期183-187,共5页Well Logging Technology

摘　　要：根据对实测测井解释资料的分析 ,认为孔隙度和泥质含量对纵波声速的影响大于含水饱和度的影响。但低孔低渗岩石含气时 ,纵波速度与含水饱和度的关系应考虑岩性 ,区别对待。另外 ,用现有方法由横波速度求得的孔隙度精度要低于纵波速度求出的孔隙度。因此 ,由横波求出的孔隙度应慎重使用。Based on the analysis of logging data, it is found that effect of porosity and shale content on acoustic velocity is heavier than that of water saturation on it. But, if gas exists in rock with low porosity and low permeability, relation between P wave velocity and water saturation should be considered differently in view of lithology.In addittion, accuracy of porosity derived from S wave velocity is lower than that from P wave velocity with the present methods. Therefore, the porosity obtained from S wave should be used cautiously.

关 键 词：储集层 孔隙度 泥质含量 含水饱和度 声波测井 

分 类 号：P631.814[天文地球—地质矿产勘探] TE311[天文地球—地质学]