潘庄煤层气井分压合采技术及其应用分析  

Individual Pressure Fracturing and Combined Mining Technology of Coal Bed Methane Wells in Panzhuang Mine and Application

作　　者：张双斌[1,2] 郭红玉[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]晋城职业技术学院矿业工程系,山西晋城048026

出　　处：《煤炭工程》2014年第5期51-53,56,共4页Coal Engineering

基　　金：国家自然科学基金资助项目(40972109;41002047);煤层气资源与成藏过程教育部重点实验室(中国矿业大学)开放基金资助项目(2013-003)

摘　　要：为了查明潘庄煤层气分压合采井的主控因素和适用条件,选用了潘庄区块生产达五年以上的分压合采井为研究对象,通过对储层地质特征、水力压裂施工参数和排采数据的整理分析,探讨了分压合采井成功实施的地质和工程因素。研究结果表明,煤层气合采井成功的关键是压裂裂缝在煤层中充分扩展,控制裂缝的缝高,避免煤层与顶底板含水层在近井地带发生水力联系;各煤层的原始储层压力、临界解吸压力相匹配时或相差不大时,通过坚持"连续、缓慢、稳定"的排采方针,合层排采会取得成功。In order to investigate the main controlling factors and applicable conditions of separated layer fracturing commingled production of combed methane in Panzhuang, the geological and engineering factors of the successful implementation was studied based on the sorting and analysis of the geological characteristics, hydrofracture construction parameter and drainage data from the production wells that had been working for more than 5 years in this area. The results show that, the key is to guarantee that the fracture spreads sufficiently within coal seams and is limited in height, to avoid the hydraulic connections between the coal seams and the roof and floor aquifers near the wells. The commingled producing will be successful by insisting on ＂continuously, slowly, stably＂ production policy, when the original reservoir pressure of the coal seams matches the critical desorption pressure or with little difference.

关 键 词：煤层气井 分压合采技术 合层排采 储层压力 临界解吸压力 

分 类 号：TE373[石油与天然气工程—油气田开发工程]