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| 煤层气水平井产气特征及动态采收率 | |
| 引用本文： | 袁文峰,刘升贵,张新亮,石晓静. 煤层气水平井产气特征及动态采收率[J]. 辽宁工程技术大学学报(自然科学版), 2012, 31(4): 441-444 |
| 作者姓名： | 袁文峰 刘升贵 张新亮 石晓静 |
| 作者单位： | 1. 中国矿业大学(北京)地球科学与测绘工程学院,北京,100083 2. 中国矿业大学(北京)力学与建筑工程学院,北京,100083 3. 国家安全生产监督管理总局,北京,100713 |
| 基金项目： | 国家科技重大专项基金资助项目(2011ZX05038-001);中央高校基本科研业务费专项资金资助项目(2009QL09) |
| 摘 要： | 为了揭示煤层气水平井产气特征,采用理论分析与数值模拟的方法,以潘庄区块为例,研究了煤层气水平井动态采收率变化规律.以煤层气勘探井测试资料为基础,分析了潘庄区块煤储层含气量、渗透率、储层压力梯度分布规律,总结了潘庄区块煤层气水平井产气曲线特征.研究结果表明:气井产气曲线特征表现为产气峰值出现时间早、持续时间长的特点;水平井排采5年后采收率可达50%,15年后采收率可达67%. |
| 关 键 词： | 煤层气 含气量 渗透率 水平井 动态采收率 储层压力 产气量 井底压力 |
Productivity and dynamic recovery rate in coal-bed methane horizontal well |
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| YUAN Wenfeng , LIU Shenggui , ZHANG Xinliang , SHI Xiaojing. Productivity and dynamic recovery rate in coal-bed methane horizontal well[J]. Journal of Liaoning Technical University (Natural Science Edition), 2012, 31(4): 441-444 | |
| Authors: | YUAN Wenfeng LIU Shenggui ZHANG Xinliang SHI Xiaojing |
| Affiliation: | 1(1.College of Geoscience & Surveying Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;2.School of Mechanics & Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;3.State Administration of Work Safety,Beijing 100713,China) |
| Abstract: | Theoretical analysis and numerical simulation method are applied to investigate the characteristics of gas production in coal-bed methane(CBM) horizontal well.Also,the variation of dynamic recovery rate in CBM horizontal well at Panzhuang Block is studied.Based on the testing data in exploration well at Panzhuang Block,the distribution of gas content,permeability,reservoir pressure are analyzed,and the gas production curve characteristics in CBM horizontal well are summarized.Results indicate that the gas peak occurs in early stage,and lasts a long period.The gas recovery rate in horizontal well can reach 50 % after ten years drainage,and reach 67 % after fifteen years drainage. |
| Keywords: | coal-bed methane gas content permeability horizontal well dynamic gas recovery reservoir pressure gas production well bottom pressure |
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