孔洞型碳酸盐岩储层流体性质识别方法研究  

Methods for Identifying Fluid Property in Cavern Carbonate Reservoirs

作　　者：邱春宁[1] 

机构地区：[1]西南石油大学资源与环境学院,四川成都610500

出　　处：《石油天然气学报》2011年第2期78-80,166,共3页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(40972142)

摘　　要：川东北地区碳酸盐岩地层地质条件复杂,孔隙空间多样化,非均质性强,储层流体性质的识别是一个难题,常规测井资料和传统的测井评价方法不能满足测井评价要求。在阐述储层主要特征基础上,利用岩石力学相关知识,推导出纵波时差的反演模型,结合Gassmann方程和全波列测井相关资料反演水层和气层理论的纵波时差值,提出实际测量纵波时差值与理论值比较的流体性质识别方法。在实际应用中,该方法对孔洞型碳酸盐岩储层流体性质识别有较好效果,有助于测井解释精度提高。To identify fluid property of carbonate reservoirs was difficult in northeast Sichuan,where geological conditions were complex,pore space was diversity and heterogeneity was strong.It could not meet logging evaluation requirements by conventional logging data and conventional evaluation.On the basis of explaining the main reservoir features,inversion model of compressional wave slowness was derived by using the knowledge of rock mechanics,theoretical compressional wave slowness of gas and water reservoir was calculated by Gassmann equation and full-wave logging data.It is proposed that the method of identifying fluid nature by comparing theroretical compressional wave slowness is used.In practical application,good result is achieved in identifying fluid property for cavern carbonate reservoirs,which helps improve the accuracy of logging interpretation.

关 键 词：全波列测井 时差反演 时差对比 流体性质识别 碳酸盐岩 孔洞型 

分 类 号：P588.245[天文地球—岩石学]