古潜山储层模糊评价方法及其应用

古潜山储层岩性组成和储集空间十分复杂,储层类别的划分具有很强的模糊性,且测井资料对储层的反映往往具有多解性、模糊性。通过对测井、岩芯和试油试采资料的综合分析,提出古潜山储层的模糊评判方法,即应用模糊聚类分析法划分储层类别并建立评价标准,应用模糊模式识别法对古潜山储层进行精细的综合评价。举出了在辽河西洼曙103块和华北廊固凹陷河西务构造带古潜山储层的评价实例,应用模糊聚类分析法将古潜山划分为4类储层并总结了各类储层的测井响应特征,根据模糊聚类分析的结果建立了各类储层的测井评价标准。应用模糊模式识别法对多口井的古潜山储层进行综合评价,评价结果与岩心、试油、试采资料的对比分析表明,模糊评价方法应用于古潜山储层效果良好。

FUZZY EVALUATION AND APPLICATION OF BURIED CARBONATE RESERVOIR

The lithologic property and pore space of buried carbonate reservoir are very complicated, the classification of reservoirs is strongly fuzzy, and the logging data are often fuzzy and multisoluble. Based on a comprehensive analysis of well logging, core observation and well testing data of a buried carbonate reservoir, a fuzzy clustering method used to classify reservoir and es-tablish evaluation norm of burial reservoir is put forward, and a fuzzy pattern recognition method is used to evaluate a buried carbonate reservoir comprehensively. The successful applications of fuzzy evaluation method to the Block Su103 in western Liaohe depression and the structural belt Hexiwu in Langgu depression Huabei shows that the method is effect.