| 应力敏感性低渗透地层渗流规律研究 |
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| 引用本文： | 赵志成. 应力敏感性低渗透地层渗流规律研究[J]. 中国西部科技, 2009, 8(26): 4-6 |
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| 作者姓名： | 赵志成 |
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| 作者单位： | 长江大学石油工程学院,湖北,荆州,434023;油气钻采工程湖北省重点实验室,湖北,荆州,434023 |
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| 基金项目： | 国家自然科学基金项目资助 |
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| 摘 要： | 基于低渗透油藏渗流特征，针对具有应力敏感性的低渗透地层垂直裂缝井，采用三线流分析方法，建立了带有启动压力梯度和渗透率变异系数的渗流数学模型。应用此模型可描述裂缝内和地层内的渗流规律，计算结果表明随着介质变形系数的增大，井底压力-流量关系曲线逐渐偏离线性关系，介质变形系数越大，在相同的井底压力下，渗流流量越小；同时，随着介质变形系数的增大，地层压降幅度也增大，任一流量下，介质变形系数越大，靠近裂缝面位置处的地层压降幅度也越大。
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| 关 键 词： | 应力敏感性 低渗透油藏 垂直裂缝井 数学模型 |
Study on Theory of Flow Through Porous Media in Low Permeability Reservoir of Stress Sensitivity |
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| ZHAO Zhi-cheng. Study on Theory of Flow Through Porous Media in Low Permeability Reservoir of Stress Sensitivity[J]. Science and Technology of West China, 2009, 8(26): 4-6 |
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| Authors: | ZHAO Zhi-cheng |
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| Affiliation: | ZHAO Zhi-cheng (1 .College of Petroleum Engineering,Yangtze University, Hubei 434023,China;2.Key Laboratory of Dring and Exploitation Engineering for Oil and Gas in Hubei Province,Hubei 434023,China) |
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| Abstract: | Based on characteristics of flow through porous media in low permeability reservoir,trilinear flow model was introduced to establish mathematical model of flow through porous media for wells with vertical fracture in low permeability reservoir of stress sensitivity,Law of seepage in francture and formation can be described applying the model.The calculation results show a deviation from linear relationship for bottomhole pressure -discharge relationship curve.The discharge decreased with increasing of deformation coefficient under the same bottomhole pressure.The pressure drop increased with increasing of deformation coefficient under any discharge. |
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| Keywords: | Stress sensitivity Low permeability reservoir Wells with vertical fracture Mathematical model |
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