大牛地气田碳酸盐岩储层类型测井判别及应用

碳酸盐岩储层类型的测井解释评价难度很大，在利用常规测井信息构建能够反映碳酸盐岩储层特性的孔、洞和裂缝敏感性参数的基础上，选择声波时差比值、密度比值、中子孔隙度比值和深浅侧向电阻率比值等４个参数作为划分储层类型的参数，通过对90口井400余层不同类型的储层进行参数统计，确定了大牛地气田下古生界碳酸盐岩储层类型的判别标准，并描述了各类储层的测井响应特征。经20口井的测试资料验证，认为采用多参数综合评判法来判别储层类型是可行的，与地质研究划分储层类型吻合程度较高。

APPLICATION OF LOGGING DATA IN IDENTIFYING CARBONATE RESERVOIR TYPES IN THE DANIUDI GAS FIELD

There is great difficulty in logging interpretation and evaluation on carbonate reservoir types. Based on the parametric sensitivity of pores,caves and fractures which can reflecting the features of carbonate reservoirs by use of the regular logging data,the acoustic ratio,density ratio,neutron porosity ratio and lateral depth resistivity ratio were selected as four main parameters for classifying the reservoir types. In light of the parametric statistical analysis on 400 layers of different reservoirs in 90 wells,this study determines the criterion of Upper Paleozoic carbonate reservoir types in the Daniudi gas field,and also describes the characteristics of log response of different carbonate reservoir types. According to the test results obtained from 20 wells,it is verified that multiple parameters are practical in actual uses for identifying reservoir types and the results match very well with those by the geological study.