基于变骨架密度的中基性火山岩储层孔隙度计算方法  

POROSITY CALCULATION OF INTERMEDIATE BASIC VOLCANIC RESERVOIR BASED ON VARIABLE MATRIX DENSITY

作　　者：丁一[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院

出　　处：《国外测井技术》2012年第1期22-25,3,共4页World Well Logging Technology

基　　金：国家重点基础研究发展计划"973"项目<火山岩油气藏的形成机制与分布规律>(2009CB219307)

摘　　要：中基性火山岩的骨架密度变化较大,由于采用固定的骨架参数,直接应用威利公式计算得到的中基性火山岩储层的孔隙度往往存在较大的误差,难以满足储层评价的需求。本文提出了一种基于变骨架密度的中基性火山岩储层孔隙度评价方法。应用岩心分析及伽马能谱测井,采用多元线性回归的方法建立了中基性火山岩的骨架密度解释模型,在此基础上,结合密度测井及中子测井建立了变骨架密度的孔隙度测井解释模型,在松辽盆地庆深气田取得了良好的应用效果。The matrix density of intermediate basic volcanic vary greatly.Due to constant matrix parameters,there is a big error in calculating the porosity of intermediate basic volcanic with Willie formulae,which can not meet the requirement of reservoir evaluation.The paper presents a porosity evaluation method for the intermediate basic volcanic reservoir based on variable matrix density.According to core analysis and gamma spectrometry logging,the matrix density interpretation model is established with multielement linear regression,then the interpretation model of variable matrix density for porosity logging is developed combining density and neutron logging.It has gained good result in Qingshen gas field of Songliao basin.

关 键 词：中基性火山岩 基质孔隙度 变骨架密度 元素测井 

分 类 号：P588.145[天文地球—岩石学]