海洋地质前沿2017，Vol.33Issue(10)：49-56,8.DOI:10.16028/j.1009-2722.2017.10006
碳酸盐岩孔隙度预测新方法在珠江口盆地的应用
APPLICATION OF NEW METHOD TO PREDICTING CARBONATE POROSITY IN THE ZHUJIANGKOU BASIN
摘要
Abstract
Porosity is critical to reservoir prediction,reservoir description,reservoir estimation and comprehensive reservoir study.It's also a critical technology to accurate estimation of oil reserve.Because of the strong heterogeneity of carbonate rock and strong lateral variation,the porosity prediction has remained a difficult problem for carbonate reservoir.Moreover,the accuracy of conventional method to calculate the porosity is not high enough and the physical meaning is always not so clear,it is hard to meet the needs of exploration and development.Therefore,through the reasonable simplification of the Gassmann equation and the introduction of Eshelby-Walsh dry rock ellipsoidal inclusions approximate formula,we derived a new formula to calculate the porosity.Three parameters,i.e.the pore structure parameters,saturated rock compressibility and rock matrix compressibility are included.Then through the intersection of logging technique charts and the inversion of pre-stack elastic parameters into the pore structure of carbonate and P-wave and S-wave velocity and density in the specific formula,considering the influence of carbonate rock pore structure with different phase,and the new method was applied.The results show that the porosity prediction method of carbonate rock pore structure has higher accuracy than the conventional method based on.关键词
碳酸盐岩孔隙度/Gassmann方程/Eshelby-Walsh方程/孔隙结构参数/叠前弹性参数反演Key words
carbonate porosity/Gassman equation/Eshelby-Walsh equation/pore structure parameters/pre-stack elastic parameters inversion分类
能源科技引用本文复制引用
张志伟,何敏,陈胜红,陈兆明,徐超,袁才..碳酸盐岩孔隙度预测新方法在珠江口盆地的应用[J].海洋地质前沿,2017,33(10):49-56,8.基金项目
“十三五”国家科技重大专项课题“南海东部海域勘探新领域及关键技术”(2016ZX05024-004) （2016ZX05024-004）
