Considering the production decline law of coal-bed methane wells, production decline can be divided into three types: exponential decline, hyperbolic decline, and harmonic decline. Research on the production decline law is very important for evaluation of CBM productivity. In this paper we have studied the law of production decline in Junlian region and established the production decline type for low, medium, and high production wells. The paper also describes the dynamic reserves calculation and recovery evaluation methods and steps using FAST-CBM coal-bed methane reservoir analysis system software.

中文翻译：

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君联煤层气开发试验井产量递减规律研究

考虑到煤层气井产量递减规律，产量递减可分为指数递减、双曲线递减和谐波递减三种。产量递减规律研究对于煤层气产能评价具有重要意义。本文研究了军连地区产量递减规律，建立了低、中、高产井产量递减类型。本文还介绍了利用FAST-CBM煤层气储层分析系统软件进行动态储量计算和采收率评价的方法和步骤。