| 裂缝性低渗透气藏垂直裂缝井产能分析 |
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| 引用本文： | 张绍辉,尹洪军,吕杭,周洪亮.裂缝性低渗透气藏垂直裂缝井产能分析[J].科学技术与工程,2010,10(8). |
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| 作者姓名： | 张绍辉 尹洪军 吕杭 周洪亮 |
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| 作者单位： | 大庆石油学院提高油气采收率教育部重点实验室,大庆,163318 |
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| 基金项目： | 国家自然科学基金重点项目(50634020、50874023);;黑龙江省高等学校科技创新团队建设计划项目(2009TD08)资助 |
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| 摘 要： | 利用椭圆流动模型和质量守恒法,建立并求解了考虑启动压力梯度影响的裂缝性低渗透气藏有限导流垂直裂缝井不稳定渗流的数学模型。绘制了产能动态曲线,同时分析了启动压力梯度、裂缝导流能力、弹性储能比和窜流系数对产能动态曲线的影响。分析结果表明:裂缝性低渗透气藏有限导流垂直裂缝井产能动态曲线可以划分为裂缝流动阶段、窜流阶段和总的系统径向流动阶段。启动压力梯度越大,产能越低;裂缝导流能力越大,产能越高;弹性储能比越大,产能越高;窜流系数越大,发生窜流的时间越早。这对深入认识裂缝性低渗透气藏有限导流垂直裂缝井的生产动态具有重要意义。
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| 关 键 词： | 低渗透 启动压力梯度 裂缝导流能力 弹性储能比 窜流系数 |
| 收稿时间： | 2010/1/16 0:00:00 |
| 修稿时间： | 2/5/2010 8:51:10 AM |
Productivity Analysis of Fractured Wells in the Low Permeability Naturally Fractured Gas Reservoir |
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| ZHANG Shao-hui,YIN Hong-jun,LV Hang and ZHOU Hong-liang.Productivity Analysis of Fractured Wells in the Low Permeability Naturally Fractured Gas Reservoir[J].Science Technology and Engineering,2010,10(8). |
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| Authors: | ZHANG Shao-hui YIN Hong-jun LV Hang and ZHOU Hong-liang |
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| Institution: | Key Laboratory of Enhanced Oil and Gas Recovery in the Ministry of Education/a>;Daqing Petroleum Institute/a>;Daqing 163318/a>;P.R.China |
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| Abstract: | By using the elliptical flow model and the law of mass conservation, the mathematical model of unsteady percolation for wells with finite conductivity vertical fractures considering threshold pressure gradient in the low permeability naturally fractured gas reservoir was developed, and type curves of productivity performance were drawn and analyzed. Influences of threshold pressure gradient, fracture conductivity, storativity ratio and interporosity flow coefficient were analyzed. Analytic results show that... |
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| Keywords: | low permeability threshold pressure gradient fracture conductivity storativity ratio interporosity flow coefficient |
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