摘要
通过对毛管压力曲线的双曲线拟合，从压汞毛管压力资料中提取一个储层孔隙结构方面新的重要参数ＲＡ，其物理意义是汞在岩石中开始形成一个连续且内部连通良好的孔隙系统时的孔喉半径。并通过实例用ＲＡ顶点的大小评价储层的好坏及油气聚集部位，效果十分理想。
Many parameters extracted from mercury injection curves have been used to describe the character of reservoir pore structures. In this paper, a new pore-structure parameter, RApex, derived from mercury injection capillary pressure data is introduced. The physical meaning of RApex is the pore throat radium of a pore system with good internal connection and continuity formed when mercury is injected into the rock sample. The procedure to obtain RApex is described. Applications of RApex are illustrated with a gas-field case study in which the parameter was used for grading reservoirs and delineating stratigraphic positions favorable for hydrocarbon accumulation, and satisfactory results were obtained.
出处
《西南石油学院学报》
CSCD
1997年第2期5-9,共5页
Journal of Southwest Petroleum Institute
关键词
孔隙结构
储集层评价
油气聚集
气管压力曲线
Pore structure
Pore throat radius
Reservoir evaluation
Hydrocarbon accumulation
