不同孔隙度人工岩心流固耦合特征试验研究  

Experimental Investigation on Fluid-solid Coupling Characteristics of Artificial Cores with Different Porosity

作　　者：钟安海 张子麟 杨峰[1] 张潦源[1] 鲁明晶 ZHONG An-hai;ZHANG Zi-lin;YANG Feng;ZHANG Liao-yuan;LU Ming-jing(Research Institute of Petroleum Engineering,Shengli Oil Field,SINOPEC,Shandong Dongying 257200,China)

机构地区：[1]中国石化胜利油田分公司石油工程技术研究院,山东东营257200

出　　处：《广州化工》2023年第3期108-111,共4页GuangZhou Chemical Industry

基　　金：中石化科技攻关项目(30200019-22-ZC0699-0019);国家科技重大专项(2017ZX05072)。

摘　　要：孔隙度对岩心的渗流-力学参数具有决定性作用,非均匀性导致天然岩心孔隙度对渗流-力学参数的影响程度离散性大、规律性不强;利用人工岩心,可以限定其孔隙率、孔径等性质,量化孔隙度的影响程度。利用水泥、骨料制备不同孔隙特征的人工岩心,开展分级围压条件下岩心物理力学测试,分析孔隙度对岩心渗透率、强度以及弹性参数的影响规律、以及材料配比与孔隙度的相关性。该研究可望为人工岩心制备及岩心渗流力学性能分析提供参考。Porosity plays a decisive role in seepage-mechanical parameters of cores,and heterogeneity leads to large discreteness and weak regularity of influence degree of natural core porosity on seepage-mechanical parameters.Using artificial core,we can limit its porosity,pore size and other properties,and quantify the influence degree of porosity.Artificial cores with different porosity characteristics were prepared by cement and aggregate,and physical and mechanical tests of cores under graded confining pressure were carried out to analyze the influence of porosity on permeability,strength and elastic parameters of cores,and the correlation between material ratio and porosity.This study was expected to provide reference for artificial core preparation and core seepage mechanical performance analysis.

关 键 词：人工岩心 孔隙度 渗透率 实验研究 

分 类 号：TE341[石油与天然气工程—油气田开发工程]