水银封闭间隙对毛管压力测试的影响及应用  

APPLICATION OF MERCURY BLIND PORE VOLUME IN METHOD OF EVALUATING CAPILLARY PRESSURE

作　　者：胡罡[1,2] 罗平[3] 陆正元 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室(成都理工大学) [2]中国石油勘探开发研究院,北京100083 [3]中国石油勘探开发研究院

出　　处：《西南石油学院学报》2004年第5期6-9,85,共4页Journal of Southwest Petroleum Institute

基　　金：973国家重点基础研究发展规划项目 (G1 9990 4331 1 )

摘　　要：在测定不规则样品以及小样品 (如岩屑 )的毛管压力时 ,水银封闭间隙现象对测量精度有着重要的影响。在研究水银封闭间隙现象的基础上 ,提出了用三次样条插值函数计算水银封闭间隙的新方法。应用此法很方便地取得了川东北部罗家寨气田飞仙关组鲕滩储层各类碳酸盐岩的水银封闭间隙数值范围 ,分析了其对毛管压力曲线的影响 ,并依此对毛管压力进行了修正 ,以提高毛管压力资料质量 。When measuring the capillary pressure of any irregular or small core samples, the accuracy is depended on the mercury blind pore volume. On the base of studying the mercury blind pore volume phenomenon, a new method by using the cubic splines interpolating function to calculate the mercury blind pore volume comes on. Thus, it is easy to get the right value of mercury blind pore volume of olitic carbonate rocks in Feixianguan Formation, Luojiazhai gas field, in northeastern, Sichuan, China. Based on analyzing the influence of the mercury blind pore volume, the capillary pressure curves are corrected, so the quality is improved and the application of the capillary pressure curves is expended.

关 键 词：毛管压力曲线 水银封闭间隙 三次样条插值 

分 类 号：R575.9[医药卫生—消化系统]