含煤地层流体能量分布与煤层气开发关系研究  

Study on relationship of liquid energy distribution and coalbed methane development in coal bearing strata

作　　者：郭晨[1] 卢玲玲 

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054 [2]北京奥瑞安能源技术开发有限公司,北京100195

出　　处：《煤炭科学技术》2016年第2期45-49,共5页Coal Science and Technology

基　　金：国家科技重大专项资助项目(2011ZX05034);国家自然科学基金重点资助项目(40730422)

摘　　要：从储层压力、水动力条件、含气性3个方面综合分析了黔西水公河向斜晚二叠世含煤地层流体能量的垂向分布特点,发现3个含煤段由于沉积环境不同,导致其间流体能量差异显著,中段能量条件最好、上段次之、下段最差,3段分别构成3个独立的含煤层气系统,相互间缺乏流体联系。依此将含煤地层划分为上、中、下3个开发层段,煤层气有序开发模式为由上至下依次对3个开发层段进行分阶段下行式开发。本区具备进行煤层气地面开发的工程地质条件,应以直井多层压裂合层排采技术为主,5-3、6-3、8号煤可尝试水平井技术,丛式井技术具有较好的推广前景。From the reservoir pressure,water dynamic condition and gas bearing aspects,a comprehensive analysis was conducted on the vertical distribution features of the liquid energy in Shuigonghe syncline Late Permian coal bearing strata of West Guizhou.Due to the sedimentary environment differences,three coal bearing sections had obvious differential in the liquid energy.The energy condition at the central section was best,the top section was second and the bottom section was poor. The three sections formed three independent coalbed methane bearing systems and there was lack of the interaction liquid connection. Thus the coal bearing stratum was divided into the top,middle and bottom development sections and the sequence development mode of the coalbed methane from the top to the bottom in sequence was applied to the three development sections with the sectional downward development. The area had the engineering geological conditions for the coalbed methane surface development and the multi strata fracturing combined mining technology with the vertical wells would be based.The horizontal well technology could be applied to No.5-3seam,No.6-3seam and No.8 seam and the cluster well technology would have a good promotion prospect.

关 键 词：水公河向斜 煤层气 多煤层 流体能量 有序开发 

分 类 号：P618[天文地球—矿床学]