Anisotropic rock physics models for interpreting pore structures in carbonate reservoirs  

碳酸盐岩储层各向异性岩石物理建模与孔隙结构分析（英文）

作　　者：李生杰[1,2] 邵雨 陈旭强[1] 

机构地区：[1]中国石油大学(北京),油气资源与探测国家重点实验室,北京102249 [2]中国石油大学(北京),中石油物探重点实验室,北京102249 [3]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依83400

出　　处：《Applied Geophysics》2016年第1期166-178,222,共14页应用地球物理（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.41274136)

摘　　要：We developed an anisotropic effective theoretical model for modeling the elastic behavior of anisotropic carbonate reservoirs by combining the anisotropic self-consistent approximation and differential effective medium models.By analyzing the measured data from carbonate samples in the TL area,a carbonate pore-structure model for estimating the elastic parameters of carbonate rocks is proposed,which is a prerequisite in the analysis of carbonate reservoirs.A workflow for determining elastic properties of carbonate reservoirs is established in terms of the anisotropic effective theoretical model and the pore-structure model.We performed numerical experiments and compared the theoretical prediction and measured data.The result of the comparison suggests that the proposed anisotropic effective theoretical model can account for the relation between velocity and porosity in carbonate reservoirs.The model forms the basis for developing new tools for predicting and evaluating the properties of carbonate reservoirs.针对非均质性较强的碳酸盐岩储层,综合各向异性自相容近似理论与差分等效介质理论建立了一种各向异性岩石物理弹性参数计算模型。通过对碳酸盐岩孔隙结构实验结果分析,提出了碳酸盐岩弹性参数计算的孔隙结构模型。综合使用各向异性等效介质理论与碳酸盐岩孔隙结构模型,给出了碳酸盐岩非均质储层弹性参数计算的实现方法。通过对比灰岩样品测试数据与理论模型计算结果,表明本文提出的等效弹性理论模型能够描述碳酸岩盐储层速度与孔隙度变化关系,可作为碳酸盐岩储层地震数据解释的基本依据。

关 键 词：ANISOTROPY rock physics pore structure MODULUS CARBONATES 

分 类 号：P618.13[天文地球—矿床学] P631.4[天文地球—地质学]