摘要
考虑井筒储集系数和表皮系数的影响,建立低煤阶煤层气单相流动的三孔双渗试井分析模型,采用Laplace变换及Stefest数值反演方法求得模型的数值解,绘制出典型压力曲线。这些结果将为低煤阶煤层气开采提供理论依据和新的试井模型。
Considering the skin and wellbore storage effects,a triple-porosity/dual-permeability model for coalbed methane well testing in low-rank coal seams is presented,and the numerical solutions are obtained by methods of Laplace transform and Stefest numerical inversion.The plots of type pressure curves are given,and the results can provide theoretical basis and well test method for exploitation of coalbed methane with low coal rank.
出处
《特种油气藏》
CAS
CSCD
2008年第2期47-49,共3页
Special Oil & Gas Reservoirs
基金
国家"863"计划项目(2006AA06Z236)
中国石油天然气集团公司基金项目(07E1020)
国家"973"计划项目(2002CB11708)资金资助
关键词
煤层气
井筒储集
非平衡吸附
拟稳态
三孔双渗模型
coalbed methane
wellbore storage
non-equilibrium adsorption
pseudo steady state
triple-porosity/dual-permeability model
