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| 复杂裂缝条件下压裂井压力动态分析 | |
| 引用本文： | 孙庆友,张绍辉,尹洪军,张青条,周洪亮.复杂裂缝条件下压裂井压力动态分析[J].科学技术与工程,2010,10(12). |
| 作者姓名： | 孙庆友 张绍辉 尹洪军 张青条 周洪亮 |
| 作者单位： | 1. 大庆石油学院提高油气采收率教育部重点实验室大庆,163318;大庆油田有限责任公司第十采油厂大庆,164415 2. 大庆石油学院提高油气采收率教育部重点实验室,大庆,163318 3. 大庆油田有限责任公司第十采油厂大庆,164415 |
| 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 |
| 摘 要： | 建立了考虑裂缝形状和导流能力变化的压裂井不稳定渗流的数学模型,并采用有限元方法求解,获得了井底压力随时间的变化规律。同时绘制了相应的压力动态曲线,并对曲线的特征和影响因素进行了分析。研究结果表明:圆形封闭地层压裂井的压力动态曲线可以划分为6个流动阶段;在相同裂缝开口宽度和相同裂缝长度的条件下,与矩形裂缝相比,楔形裂缝压力消耗大,表现为无因次压力及压力导数曲线较高;在相同裂缝开口渗透率的条件下,与导流能力呈线性降低的裂缝以及常导流能力裂缝相比,导流能力呈幂指数降低的裂缝压力消耗最大,表现为无因次压力及压力导数曲线最高。 |
| 关 键 词： | 压裂井 有限元方法 楔形裂缝 裂缝导流能力 |
| 收稿时间： | 2/1/2010 9:33:39 AM |
| 修稿时间： | 2/1/2010 9:33:39 AM |
Study of Pressure Behavior for Fractured Wells in Complex Fracture Conditions |
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| SUN Qing-you,ZHANG Shao-hui,YIN Hong-jun,ZHANG Qing-tiao and ZHOU Hong-liang.Study of Pressure Behavior for Fractured Wells in Complex Fracture Conditions[J].Science Technology and Engineering,2010,10(12). | |
| Authors: | SUN Qing-you ZHANG Shao-hui YIN Hong-jun ZHANG Qing-tiao and ZHOU Hong-liang |
| Institution: | Key Laboratory of Enhanced Oil and Gas Recovery in the Ministry of Education1/a>;Daqing Petroleum Institute/a>;Daqing 163318/a>;P.R.China/a>;No.10 Oil Production Company of Daqing Oil Field Company Ltd.2/a>;Daqing 164415/a>;P.R.China |
| Abstract: | The transient flow mathematical model of fractured wells considering fracture shape and variable fracture conductivity is developed and solved by using finite element method. And the behavior of the bottomhole pressure varying with time is obtained. At the same time, corresponding pressure transient curves are drawn. The curve characteristics and influences are analyzed. The study shows that the pressure transient curve of fractured wells in closed circular formation can be divided into six different flow r... |
| Keywords: | fractured wells finite element method tapered fracture fracture conductivity |
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