摘要
文章详细地讨论了诸因素对煤层渗透率的影响 ,指出在常规情况下 ,有效应力、基质收缩等在煤层绝对渗透率诸影响因素中占据主导地位 ;并在以上分析的基础之上 ,提出了煤层气勘探开发的施工工艺中应该尽量避免渗透率的损失 ,或者尽量采用强化措施 ,对煤层进行改造 ,以提高渗透率 ,从而提高其开发能力。同时也指出了应加强对煤层孔隙度、渗透率的测定方法的研究以及煤层割理、孔隙发育机理的研究 ,为储层评价提供更为充分的依据。
It is well discussed that various factors have many effects on the c oeffi cient of permeability of coal beds. Under ordinary conditions, effective stress and matrix shrinkage are two dominating factors. Through the above me ntioned analysis, it is advised that during the operation technology of explorin g and developing the coal bed methane, the loss of coefficient of permeability should be avoided as possible, or some reinforcing measures should be taken by a ll means to mend coal beds for the purpose of increasing the coefficient of perm eability and enhancing its production capacity. In the meanwhile, more studies s hould be encouraged in the future to make a thorough inquiry of the method of m easuring the porosity and the permeability of the coal beds and to get a better knowledge of the joint of coal beds and the mechanism of pore development in order to find more and more e nough reliable evidences for reservoirs' assessment.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2002年第5期45-49,共5页
Natural Gas Industry
关键词
煤层
渗透率
影响因素
综述
基岩
应力分析
效应
测定
Coal bed, Basement rock, Permeabili ty, Stress analysis, Effect, Measuring the coefficient of permeability
