张东地区中生界岩性识别与储层孔隙度解释模型研究

Research of Lithology Recognition and Reservoir Porosity Modeling of Mesozoic in Zhangdong Area

针对张东地区中生界储层岩性复杂的特点,在系统整理、分析各种资料的基础上,结合沉积储层特征,利用常规测井、自然伽马能谱测井和成像测井资料开展岩性识别,进而对比划分砂层组,明确了不同砂层组的岩性特征及平剖面分布特征。在岩性识别的基础上,利用岩心资料对测井资料进行刻度,结合元素俘获测井、全岩矿物鉴定综合确定骨架参数,建立了不同岩性储层的孔隙度解释模型,为该区开发部署和储量研究提供了依据。

In allusion to the characteristics of complex lithology in Mesozoic reservoir of Zhangdong Area and based on the systematical analysis of various data,combined with the sedimentary characteristics of reservoir,conventional logging,natural gamma energy spectrum and imaging logging data were used for the identification of lithology,and then the division and correlation of sand groups were carried out,the plane and profile distribution and lithology characteristics of different sand groups were clarified.On the basis of lithology recognition,core data are used for logging data graduation.Then,according to the elemental capture logging and whole rock mineral identification,matrix parameters are determined and a porosity model is established for different lithology reservoirs,it provides the basis for the research of reserves and deployment of oil development in the area.