| 煤层气井气水两相流动阶段流入动态研究 |
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| 引用本文： | 毛慧,韩国庆,吴晓东,史进.煤层气井气水两相流动阶段流入动态研究[J].断块油气田,2011,18(4):502-504. |
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| 作者姓名： | 毛慧 韩国庆 吴晓东 史进 |
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| 作者单位： | 中国石油大学(北京)石油工程教育部重点实验室,北京,102249 |
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| 基金项目： | 国家科技重大专项"鄂尔多斯盆地石炭二叠系煤层气勘探开发示范工程"子课题"烟煤储层增产改造技术试验与应用" |
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| 摘 要： | 煤层气井在开采过程中必定经历气水两相流动阶段,气水两相流动的结果,必然导致煤层气藏压力动态发生变化.因此,研究煤层气井气水两相渗流理论,对于预测煤层气井气水两相流动阶段井底流压的变化及产量动态具有非常重要的作用.基于质量守恒原理,建立了煤层气井气水两相流动阶段地层瞬态渗流的数学模型.通过定义气水两相拟压力函数,同时考虑...
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| 关 键 词： | 谋层气井 两相流动 产能方程 曲线 |
Study on inflow performance in gas-water two-phase flow stage of coalbed methane well |
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| Mao Hui,Han Guoqing,Wu Xiaodong,Shi Jin.Study on inflow performance in gas-water two-phase flow stage of coalbed methane well[J].Fault-Block Oil & Gas Field,2011,18(4):502-504. |
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| Authors: | Mao Hui Han Guoqing Wu Xiaodong Shi Jin |
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| Affiliation: | (MOE Key Laboratory of Petroleum Engineering,China University of Petroleum,Beijing 102249,China) |
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| Abstract: | Coalbed methane well will undergo the gas-water two-phase flow stage during production and two-phase flow will result in the dynamic change of coalbed methane reservoir pressure.Therefore,the study of the gas-water two-phase filtration theory is very important to predict the change of the bottom hole flowing pressure of gas-water two-phase stage and the production performance in coalbed methane well.Based on the mass conservation principle,the mathematical model of transient flow at gas-water two-phase stage in coalbed methane well is established.Through defining the gas-water two-phase pseudo pressure function,at the same time,through taking into account the impact of skin effect and non-Darcy effect,the productivity equation of gas-water two-phase flow is derived,which can obtain the transient inflow performance curve of gas-water two-phase flow in order to provide a reference for dynamic analysis of coalbed methane well. |
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| Keywords: | coalbed methane well two-phase flow deliverability equation curve |
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