论文详情
火山岩储集层孔隙结构复杂,孔隙发育类型多,产能预测困难。为此,根据电成像测井的方法原理,结合Archie公式和常规测井资料,将火山岩层的电成像数据转换为核磁区间孔隙度类似的形式,通过与核磁区间孔隙度对比,得到火山岩储层的孔隙区间特征。在此基础上,针对火山岩复杂的孔隙类型,对孔隙区间展开进一步分析,得到不同孔隙区间所占的比例,结合计算的孔隙度变异系数,得到火山岩储集层的孔隙区间特征及孔隙径向非均质性特征,进而发现影响火山岩储层产能的隔挡层的存在,为火山岩次生孔隙发育情况及火山岩储集层产能预测提供了参考依据。
The volcanic reservoir is characterized by complex pore structures and various pore types; therefore,the productivity forecast is difficult.In terms of the principles of micro-electric imaging logging,combining with the Archie formula and conventional logging data,the micro-electric imaging data of volcanic formations is transformed into the form similar to the nuclear magnetic interval porosity.The porosity interval characteristics of volcanic reservoir are obtained by comparing with nuclear magnetic interval porosity.On this basis,aiming at the complex pore types existing in volcanic reservoir,we carry out further analysis on porosity intervals and achieve the proportion of different porosity intervals.Integrating with the calculated porosity variation coefficient,the characteristics of porosity intervals and radial pore heterogeneity are achieved.As a result,the interlayers in volcanic reservoir are identified.The research results provide reference for the development of secondary pores in volcanics and productivity forecast of volcanic reservoirs.
国家重点基础研究发展计划(973计划)项目(2009CB219303)及吉林大学研究生创新基金项目(2015131)共同资助。