寿阳区块煤层气采收率预测方法及井间距优化  

CBM recovery rate prediction method and well spacing optimization in Shouyang block

作　　者：刘升贵[1] 涂坤[1] 付裕[1] 彭智高[1] 邵阳[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《辽宁工程技术大学学报（自然科学版）》2015年第8期892-897,共6页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金项目(41472130)

摘　　要：为准确预测煤层气采收率和确定煤层气井开采合理的井间距,对数值模拟法、类比法、等温吸附法、解析法及其各自的适用条件和优缺点做了详细分析,结合3种采收率的预测方法得出了15#、9#、3#煤层的采收率;阐述了煤层气开发中井间距的设计原则,根据寿阳区块的地质和煤储层条件,设计3种不同的井间距方案,通过数值模拟预测产能,分析了井间距与产能之间的关系,得出合理的井间距;阐述了丛式井组设计开发概念思想.研究结果表明:合理的井间距为350 m×350 m,15#煤层的采收率为53.9%,9#煤层采收率为51.6%,3#煤层的采收率为47.8%.In order to accurately predict coalbed methane （CBM） recovery rate, this paper analyzed in great detail their applicable conditions, merits and drawbacks of numerical simulation method, analogy method, isothermal adsorption method and analytic method. The recovery rate of NO.15 coal seam, NO.9 coal seam and NO.3 coal seam was obtained by combining 3 recovery rate prediction methods. The design principle of the well spacing for CBM development was described. According to the geology and coal reservoir condition in Shouyang block, this paper designed 3 different well spacing schemes and analyzed the relationship between the well spacing and capacity through productivity prediction by numerical simulation, and finally obtained the reasonable well spacing The results show that the most reasonable well spacing is 350m×350m, the recovery rate of NO.15 coal seam is 53.9%. and the recovery rate of NO.9 coal seam is 51 .6% and the recovery rate of NO.3 coal seam is 47.8%.

关 键 词：寿阳区块 煤层气 采收率 预测方法 井间距 丛式井 

分 类 号：TE327[石油与天然气工程—油气田开发工程]