川东北海相碳酸盐岩ElanPlus测井解释模型及应用

Well-logging Interpretation Model of ElanPlus Used for Marine Carbonate Rock in Northeastern Sichuan Basin

川东北地区钻井揭露的海相碳酸盐岩层位较多,如果仅简单地建立一个统一的模型,很难准确计算出不同层位的岩石矿物组分和储层参数。因此,结合ElanPlus的基本原理,通过对研究区地层矿物成分组合的研究,建立了碳酸盐岩、硬石膏岩、盐岩3大模型,并且对这些模型进行线性概率模型组合,得出特定的Elanplus测井解释模型,对比可知ElanPlus解释模型得出的物性参数符合地层的实际情况。

In northeastern Sichuan Basin,plenty of marine carbonate formations are discovered by drilling.But,only a unified well-logging interpretation model is not suitable for calculating accurately the rock and mineral components and the reservoir parameters in different horizons.Therefore,based on mineral composition,this paper establishes three models used for carbonate,anhydrite and salt rock,respectively.Moreover,linear and probability combination is carried through for these models to obtain a well-logging interpretation model,ElanPlus.Results show that physical property from ElanPlus model is in accordance with that offormation.