羊三木油田低阻油层测井评价方法  

Evaluation of Low Resistivity Oil Zone in YSM Oilfield

作　　者：宋璠[1] 侯加根[1] 刘钰铭[1] 苏妮娜[1] 薛建军[2] 李淑静[2] 徐芳[2] 

机构地区：[1]中国石油大学资源与信息学院,北京102249 [2]中国石油天然气股份有限公司大港油田分公司,天津300280

出　　处：《科技导报》2009年第15期52-55,共4页Science & Technology Review

基　　金：国家自然科学基金项目(50374048)

摘　　要：针对羊三木油田低阻油层,综合地质、钻井特征,对低阻油层成因进行了分析,认为该区低阻油层主要是由于薄层、高束缚水饱和度储层引起。针对羊三木油田的实际情况,提出了区域构造对比法、自然电位减少系数法等低阻油层定性评价方法和针对高束缚水饱和度的双水法、针对薄层处理的高分辨率处理技术等定量评价方法。Based on a geological analysis and the drilling features, the genesis of low resistivity reservoir in YSM oil field is studied. It is concluded that the low resistivity reservoir oil comes mainly from five causes, that is, high irreducible water saturation, high clay content, thin layer of low resistivity reservoir, effect of high salinity and high-density slurry. Especially, the thin layer and high bound water saturation are the main causes of low resistivity reservoir in this area. This paper considers mainly these two aspects. According to the actual conditions of YSM oil field, a qualitative evaluating method for low resistivity reservoir is proposed, which includes the regional structure contrast method and the spontaneous potential decrease coefficient method. With the actual testing situation, the low resistivity reservoir can be interpreted well by the regional structure contrast method. The spontaneous potential decrease coefficient method is first applied to the area, with good results. At the same time, the quantitative evaluation method is used with a dual water model that considers the high bound water saturation. The dual water model is effective for the low resistivity reservoir due to the lithology and the additional electrical conductivity from clay minerals. Meanwhile, a high-resolution logging data processing technology is put forward, mainly for reservoirs with complex lithology.

关 键 词：羊三木油田 低阻油层 束缚水 测井评价 双水法 

分 类 号：TE345[石油与天然气工程—油气田开发工程]