摘要
川东某地区嘉陵江组储层为碳酸盐岩储层 ,其地质特征和流体分布状态具有复杂性和多变性 ,测井解释时采用常规方法如利用含油气饱和度或者地层电阻率的变化特征来判断流体性质往往不够准确。为了提高流体性质识别精度 ,文章提出了一种模糊灰关联模式识别的方法。将灰关联分析技术与模糊集理论结合起来 ,采用模糊相对隶属度概念对判别对象序列进行标准化 ,在此基础上求取模糊灰关联度向量 ,然后根据最大隶属原则判别流体类型归属。将其用于该地区储层流体性质判别 ,与试油结论对比 ,结论合理 ,识别精度高 。
The reservoir of Jialingjiang formation in X area is mainly carbonate. Its geological properties and the fluid distribution in it are complicate and variant. It is not always accurate enough in prognosticating property of the fluid contained in the reservoir by using the traditional logging interpretation methods, such as interpretations based on oil-gas saturation or formation resistivity. In order to increase the prognostication accuracy a fuzzy grey correlation pattern recognition method was proposed, combining fuzzy set theory and grey correlation analysis. In this method the sequence of the object to be identified is normalized based on the fuzzy relative subordination degree and a vector of the fuzzy grey correlation degree is derived. Finally the sort of fluid is identified based on the maximum vector principle. Compared with the production test conclusions, applying this method in this area has achieved more accurate results.
出处
《天然气勘探与开发》
2004年第1期27-29,63,共3页
Natural Gas Exploration and Development
基金
西南石油学院"油气藏地质与开发工程"国家重点实验室项目资助 (PLN0 1 2 5)
