钻井液与完井液2011，Vol.28Issue(4)：11-13,18,4.
多功能煤储层钻井液动态污染评价系统
摘要
Abstract
The multifunction evaluation system for dynamic contamination of drilling fluid is a test instrument of drilling fluid protection and damage evaluation of coal reservoir, which is used for simulating coal formation invasion caused by drilling fluid and the extent and depth of contamination under the condition of true triaxial stress, and can research anisotropic characteristics of coal formation being stood various true triaxial stresses. The system can detect permeability variation of coal core in aeolotropic stress conditions and filtration law of coal reservoir before and after being contaminated by drilling fluid in true triaxial stress situation, simulate dynamic pollution history of drilling fluid during positive and negative differential pressure, balanced pressure drilling, realize integration between the process of formation pollution and flow event, thus avoid pressure effect caused by multiple loading sample, and is applied for testing gas/liquid two-phase permeability of coal formation. Moreover, it has the characteristics of clear flow chart, easy operation, modules of experimental software and standardization of experiment data.关键词
煤储层/真三轴应力/动态污染/实验研究Key words
Coal-bed reservoir/ True triaxial stress/ Dynamic pollution/ Experimental study分类
能源科技引用本文复制引用
余维初,蒋光忠,汪伟英,胡三清,邹来方,田中兰,杨恒林..多功能煤储层钻井液动态污染评价系统[J].钻井液与完井液,2011,28(4):11-13,18,4.基金项目
国家科技重大专项项目36课题1(2008ZX05036-001). （2008ZX05036-001）
