川东石炭系碳酸盐岩储层裂缝发育模式的测井识别方法  

Logging Recognition Method of Fracture Development Model for Dense Carbonate Reservoir of the Carboniferous in East Sichuan

作　　者：刘晓东[1] 杨斌[1] 李强[1] 符伟兵[1] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059

出　　处：《内蒙古石油化工》2008年第21期121-123,共3页Inner Mongolia Petrochemical Industry

摘　　要：测井方法是目前识别和探测致密储层裂缝最常用、最有效的方法。在川东石炭系气藏的老井区,均未测FM I电阻率成像、地层倾角和声波变密度等现代测井资料,只能利用声波、双侧向等常规测井曲线来识别裂缝储集层、判断裂缝的发育模式。本文通过对川东某石炭系气藏中部分取心井岩心裂缝观察描述和测井资料的综合研究,总结出三种不同的裂缝发育模式和对应的测井响应特征,并应用多元统计技术建立了裂缝发育模式识别模型,通过在其它取芯井段上的模型检验和对比,获得了较高的回判率,在对研究区所有未取心井石炭系井段上进行了裂缝发育模式识别和分析,揭示了基于常规测井的复杂碳酸盐岩储层裂缝发育模式判别的一种有效方法,为研究区储层裂缝平面展布预测和裂缝性储层评价提供了重要的参考。Diagnosis of fracture by logging is the most general and effective method. In the old areas for the Carboniferous in East Sichuan where absence of new logging technology such as the FMI logging and diplog and aeoustie variable density logging, acoustic logging and dual lateral logging can be used to determine the fractured reservoir and the fracture patterns. In this paper, three different fracture patterns and their electrologging characteristics are summed up by researching part of the core observational records and well log data of the Carboniferous reservoir in East Sichuan,and then fraeture pattern recognition model is established by applying multiple discriminate analysis. High baek estimation rates of the model are obtained by comparing with the test results of this model in the coring intervals. The intervals that has not core have been clone the recognition analytical work. An effective method of fracture development discrimination based on conventional log is revealed and it is valuable for the prediction of spread rule of the fractures and the fractured reservoir evaluation in this area.

关 键 词：碳酸盐岩 常规测井 裂缝性储层 裂缝发育程度 多元判别模型 

分 类 号：P618.130.8[天文地球—矿床学] TE377[天文地球—地质学]