论文部分内容阅读
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。
The article discusses in detail the influence of various factors on the permeability of the coal seam and points out that under normal conditions, effective stress and matrix shrinkage dominate the influencing factors on the absolute permeability of the coal seam. Based on the above analysis, In the construction technology of CBM exploration and development, the loss of permeability should be avoided as much as possible or the intensified measures should be applied as far as possible to rebuild the coal seam to improve the permeability so as to improve its development capability. At the same time, it is also pointed out that it is necessary to strengthen the research on the methods of measuring the porosity and permeability of coal seams, as well as the researches on the mechanism of coal seam cleavage and pore development so as to provide a more adequate basis for reservoir evaluation.