煤层气开发井网优化设计——以新集矿区为例

Optimized design of coalbed methane development with reference to Xinji mine

摘要: 以新集矿区为例,系统地研究了煤层气开发井网设计的具体内容及工作程序。根据对新集矿区煤储层地质条件分析,确定了煤层气开发的目标煤层以及布井间距设计原则;通过煤储层数值模拟的产能预测,确定了煤层气开发的井网布置样式;在产能预测的基础上,结合经济分析,优化了煤层气开发的布井间距,进而提出了新集矿区首期煤层气开发布井方案,并进行了产能预测。指出新集矿区煤层气开发应采用地面垂直井、采动区煤层气开发以及井下瓦斯抽放等多种开发方式综合并举的形式。

Abstract: Base on the research of geological condition in Xinji mine,the content and procedure of well pattern design in CBM development are provided in the paper.Firstly,according to the analysis of coal reservoir geological condition in Xinji mine,the target coal seams for CBM development and the principle of well spacing design are defined.Secondly,by the production prediction of reservoir simulation,the well pattern distribution is established.Thirdly,based on production prediction and economic analysis,the well spacing for CBM development is optimized.In the end,the demonstration development plan in Xinji mine is given,and the production prediction is performed.The constructional proposal for coalbed methane development is presented.