摘要
裂缝型碳酸盐岩储集层的测井解释一直是测井解释所面临的难题之一.本文较为系统地介绍了一种从提取和优化裂缝指标、计算裂缝概率、评价裂缝概率可信度到计算综合裂缝概率的测井解释方法.在研究中,提取密度中子孔隙度差异指标和FMI测井裂缝参数指标,并采用R型聚类分析,对常规测井裂缝指标和FMI测井裂缝参数指标进行优化,形成了优化的裂缝指标集;提出裂缝概率可信度评价的方法.最后,利用本文提出的解释方法,给出了塔河油田两口井的处理结果.
Affected by many factors, such as complexity and randomicity of fracture system and well-logging response, the well-logging interpretation of fracture reservoir of carbonate rock is facing a great deal of difficulties. What is proposed in this paper is a systemic method of well-logging interpretation, which includes definition and selection of fracture indexes, calculation and reliable evaluation of fracture probability and computation of synthetic fracture probability. R-cluster analysis is applied to select fracture indexes of conventional well log and FMI log and to optimize the collection of fracture indexes. And then, reliable evaluation of fracture probability is put forward and reliable function for fracture index of dual lateral log is given. At last, using the method given in this paper, the logs of two wells in Tahe oilfield were processed and results were provided.
出处
《地球物理学进展》
CSCD
北大核心
2005年第1期78-82,共5页
Progress in Geophysics
关键词
塔河油田
碳酸盐岩
裂缝
测井解释
聚类分析
Tahe oilfield, carbonate rock, Fracture, well-logging interpretation, cluster analysis
