煤层气注井开采数值模拟

Numerical simulation of coal-bed methane note well exploitation

为了研究影响煤层气井产量的主要因素,利用有限元方法分别对单井、多井开采煤层气以及考虑源汇问题进行了数值模拟。考查多井开采煤层气时引起的井群干扰对煤层气压力场的影响,结果表明:离中心井越近的井,对产气量越有益。该成果对实现我国煤层气的规模开采具有一定的参考价值和指导意义。

In order to research the main factors of affecting the output of coal-bed methane wells. It simulate respectively for single-well, multi-wells mining coal-bed methane which considered the problems of sources by finite element method. We also conclude that the influence of the pressure of coal bed cause by interference of drilling Wells when mine coal-bed methane. The results show that： the nearer that central well is, the better that the output is. The results of the realization of the scale of China＇s coal-bed methane exploration have a certain reference value and significance.