储层参数压力敏感性研究  

Study on Sensitivity to Pressure on Reservoir Factors.

作　　者：赵明跃[1] 王新海[1] 雷霆[1] 刘德海[2] 吉玉林[2] 

机构地区：[1]江汉石油学院 [2]塔里木油田分公司勘探事业部

出　　处：《油气井测试》2001年第4期3-4,共2页Well Testing

摘　　要：储层压力变化会引起储层物性参数 (如渗透率 )发生相应变化。岩石覆压渗透率与净有效覆压呈指数递减关系 ,且渗透率变化不可逆 ;岩石覆压孔隙度与净有效覆压成二次三项式递减关系 ;裂缝型地层与碎屑岩地层相比 ,压力敏感性更强。因此 。The changes of reservoir pressure will result in the cianges of reservoir physical properties such as permeability and porosity.It is found in this paper that with the uplift of net effective overlying formation pressure,the reservoir permeability at the overlying formation pressure decreases exponentially and irreversibly,and also the reservoir porosity at the overlying formation pressure decreases parabolically.Furthermore,the fissured reservoir factors are much more sensitive to pressure than the clastic rock reservoir factors.Therefore the study on sensitivity to pressure on reservoir factors is essential to the determination of the reasonable well testing pressure difference.

关 键 词：储层参数 压力敏感性 渗透率 孔隙度 油气藏 

分 类 号：TE311[石油与天然气工程—油气田开发工程]