摘要
以绥中36-1油田23井16块岩心的毛管压力与物性分析资料为基础,总结了利用毛管压力资料求原始含油饱和度的3种方法,并分别对各方法进行了评价。这3种方法分别是Purcell法,含油高度法和J函数直接拟合法。虽然它们都是以J函数为基础求原始含油饱和度的,但Purcell法和J函数直接拟合法考虑了更多的地层条件,而含油高度法偏重于理论计算。通过与密闭取心分析得到的含油饱和度对比,3种方法均可以得到较为满意的解释结果。
This paper demonstrated 3 methods that compute oil saturation from capillary pressure data using the capillary pressure data of 16 cores in well 23 in Suizhong 36-1 oilfield.The method used are Purcell method,oil height method,and J-function fitting method.All these methods are based on J function.Purcell method and J-function fitting method observe more strictly the formation conditions whereas oil height method focuses more on theoretical computation.As indicated by the oil saturation from cores,all 3 methods yield satisfactory results.
出处
《勘探地球物理进展》
2009年第5期365-369,375,共6页
Progress in Exploration Geophysics
关键词
毛管压力曲线
含油饱和度
J函数
含油高度
capillary pressure curve
oil saturation
J-function
oil height method
