| 煤层气单井开采数值模拟的研究 |
| |
| 引用本文： | 吴晓东,张迎春,李安启.煤层气单井开采数值模拟的研究[J].中国石油大学学报(自然科学版),2000,24(2). |
| |
| 作者姓名： | 吴晓东 张迎春 李安启 |
| |
| 作者单位： | 1. 石油大学石油工程系,山东东营257062
2. 石油勘探开发研究院,北京100083 |
| |
| 基金项目： | 中国石油天然气集团公司重点项目!(97024) |
| |
| 摘 要： | 对煤层气的流动机理进行了分析。结果表明 ,煤层中的甲烷气主要以吸附的方式储集在煤基质中 ,煤层割理系统提供渗流通道。煤层气在煤基质中的吸附遵循朗格缪尔等温方程 ;煤层气由煤基质向割理系统的扩散遵循Fick第一定律 ;煤层气在割理系统的流动遵循达西定律。借鉴美国现有模型 ,结合我国现场实际情况 ,建立了二维煤层气垂直井的非平衡拟稳态井底渗流数学模型。现场实例模拟计算表明 ,该模型能够用于煤层气单井数值模拟。
|
| 关 键 词： | 煤层气 开采 煤基质 割理系统 吸附 数学模型 数值模拟 |
Numerical Simulation for Coalbed Methane Production |
| |
| Wu Xiao-dong,Zhang Ying-chun,Li An-qi.Numerical Simulation for Coalbed Methane Production[J].Journal of China University of Petroleum,2000,24(2). |
| |
| Authors: | Wu Xiao-dong Zhang Ying-chun Li An-qi |
| |
| Abstract: | Coalbed methane exists in a coal matrix by adsorption. The cleat system of coals acts an flow channel. The adsorption of coalgas is determined by Langmuir equation in the coal matrix. The diffusion process to the cleat system is described by using Fick's law. The flow in the cleat system can be described by Darcy's law. Two dimensional non equilibrium sorption pseudo steady state model of coalbed methane for vertical well is derived in combination of an American model with the filed situation. The numerical simulation model of coalbed methane for single well is testified by on site examples. |
| |
| Keywords: | coalbed methane production coal matrix cleat system adsorption mathematical model numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
