水资源与水工程学报2012，Vol.23Issue(2)：33-36,4.
多重水力割缝下煤层气储层卸压数值模拟
Numerical simulation for methane store pressure release in coalbed under mult- hydraulic cutting seam
摘要
Abstract
Aiming at high stress characteristics in deep coal bed in the Pingdingshan, the methane exploitation is more and more difficult and methane reservoir releasing is urgently awaited to be solved. Therefore hydraulic cutting seam technique applied releasing on deep coalbed was studied by numerical simulation. Through calculating the maximum cutting depth of the hydraulic cutting seam, the paper established the finite element model of three - dimension stress field of hydraulic cutting seam releasing and got the stress drop size and sphere of inNuence after the hydraulic cutting seam at the two hydraulic distance(5m,6m, 7m,8m) ,numerical simulation analysis is carried out and obtained the distance of 6m stress drop size and its influence effect the best. Furthermore, the numerical simulation analysis for parallel and staggered multiple hydraulic slotting distressed condition was carried out, the effect of releasing of staggered multiple hydraulic cutting seam is better than the other. The method can provide the theoretical guide for multiple hydraulic slotting configuration on the actual deep coalbed.关键词
水力割缝/本煤层/优化措施/数值模拟Key words
hydraulic cutting seam/local coal seam/ optimal measures/ numerical simulation分类
矿业与冶金引用本文复制引用
唐巨鹏,杨森林,李利萍..多重水力割缝下煤层气储层卸压数值模拟[J].水资源与水工程学报,2012,23(2):33-36,4.基金项目
国家自然科学基金项目(11072102)资助 （11072102）
国家重点基础研究发展计划(973)项目(2010CB226803)资助 （973）
