用J函数法求取碳酸盐岩储层饱和度方法探讨  

Using J-function method to calculate saturation of carbonate reservoirs

作　　者：司马立强[1] 李清[1] 杨毅[1,2] 陈强[1,3] 

机构地区：[1]西南石油大学地球科学与技术学院,成都610500 [2]中海石油(中国)有限公司湛江分公司,广东湛江524057 [3]中国石油塔里木油田分公司,新疆库尔勒841000

出　　处：《岩性油气藏》2014年第6期106-110,共5页Lithologic Reservoirs

基　　金：国家重大科技专项"孔隙型碳酸盐岩储层测井评价技术研究"(编号:2011ZX05031-003-006HZ)资助

摘　　要：准确求取非均质碳酸盐岩储层含水饱和度一直是测井解释工作的一大难题(尤其是在缺乏密闭取心等直接确定岩心含水饱和度资料的情况下)。根据毛管压力曲线、物性分析数据及RFT测试等资料,并以中东某油田为例,探讨了利用毛管压力曲线计算非均质碳酸盐岩储层原始含水饱和度的方法(J函数法)。利用此方法计算出的原始含水饱和度与相渗实验分析结果及试油结果均吻合较好。此次研究为缺乏岩心含水饱和度资料的非均质碳酸盐岩储层含水饱和度的求取提供了一种合理、可靠的计算方法。Calculating the initial water saturation of heterogeneous carbonate reservoirs is always a challenge to log interpretation, especially under the condition of lack of data such as sealed core which can directly determine the water saturation. Taking an oilfield in the Middle East as an example, according to the data of capillary pressure curve, physical properties analysis and RFT test, this paper discussed J-function method that uses capillary pressure curve to calculate initial water saturation of heterogeneous carbonate reservoirs. The water saturation calculated by this method agrees quite well with that interpreted by relative permeability experiment data and oil test results. This study provides a reasonable and reliable method to ensure water saturation of heterogeneous carbonate with no water saturation of cores.

关 键 词：碳酸盐岩储层 毛管压力曲线 J函数法 原始含水饱和度 

分 类 号：TE122.23[石油与天然气工程—油气勘探]