采动区煤层气井布置关键技术研究
Research on Key Technologies for the Layout of Coalbed Methane Wells in Mining Areas
李哲远 1李荣雷 2冯云飞2
作者信息
- 1. 贵州煤层气能源开发有限公司 贵州六盘水 553000
- 2. 贵州省煤层气页岩气工程技术研究中心 贵州贵阳 550081
- 折叠
摘要
在煤层开采过程中,岩层运动形成大量的裂隙可以作为瓦斯的流动通道.在采动区的合适位置布置煤层气井,可以保证煤层气开发的效果.结合了煤层开采岩层运动的规律,重点分析了在采动区布置煤层气井的关键因素.首先,分析了采动过程中煤层气富集有利区优选机理.其次,分析了采动过程中煤层气井的变形机理.最后,对煤层井的布置进行探讨.结果表明:采动区煤层气井应该布置在回风巷侧且地表沉降拐点连线和采场中心线之间的区域;为了保持煤层气井的稳定性,钻井应该采用二级结构和三级结构.
Abstract
In the process of coal mining,the strata movement creats a large number of fractures that can serve as flow channels for gas.The placement of coalbed methane wells in the appropriate location of mining areas can en-sure the effect of coalbed methane development.This paper combines the law of the strata movement during coal mining to focuse on the key factors of the layout of coalbed methane wells in mining areas.The paper first analyzes the optimization mechanism of the favorable areas of coalbed methane enrichment during mining,then analyzes the deformation mechanism of coalbed methane wells in the mining process,and finally discusses the layout of coalbed methane wells.The findings indicate that coalbed methane wells in mining areas should be arranged on the side of the return air roadway and the area between the connection line of surface subsidence inflection points and the cen-ter line of the stope,and that the well drilling should adopt secondary and tertiary structures in order to maintain the stability of coalbed methane wells.
关键词
采动区/煤层气开发/岩层运动/煤层气井Key words
Mining area/Coalbed methane development/Strata movement/Coalbed methane well引用本文复制引用
基金项目
贵州省科技计划项目(黔科合支撑[2023]一般305)
出版年
2024
NETL
NSTL
万方数据