煤层气地面集输系统管流分析

Modeling and Simulation of Coalbed Methane Gathering Pipeline Network

采用BWRS方程计算煤层气的物性参数,并根据煤层气的排水采气工艺特点进行煤层气水析出计算。在此基础上,建立了适合于煤层气集输管道相态变化特点的水力、热力计算模型,采用JAVA语言开发了煤层气集输管网系统的模拟程序。算例分析结果表明建立的数学模型是可行的。为煤层气管网系统的合理设计与操作提供技术支持。

First,BWRS equations are used to calculate the physical parameters. Then the calcula tion of CBM water production is carried out according to the characteristics of CBM＇s water drainage gas production process. Based on that, the hydraulic and thermal model suitable [or phase change in CBM gathering pipeline were established＇ and simulators of CBM gathering network with JAVA language are developed. Analysis of case shows that the model is feasible＇which pro vides technical support for proper design and operation of CBM network system.