| 低渗透油藏压裂水平井井筒与油藏耦合的非稳态模型 |
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| 引用本文： | 廉培庆,程林松,曹仁义,黄世军.低渗透油藏压裂水平井井筒与油藏耦合的非稳态模型[J].计算物理,2010,27(2):203-210. |
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| 作者姓名： | 廉培庆 程林松 曹仁义 黄世军 |
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| 作者单位： | 1. 中国石油大学(北京)石油天然气工程学院, 北京 102249 |
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| 基金项目： | 国家自然科学基金(90210019);;教育部高等学校博士学科点专项科研基金(20060425001)资助项目 |
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| 摘 要： | 推导低渗透各向异性油藏压裂水平井井筒与盒式油藏耦合的非稳态模型,并给出求解方法.模型考虑摩阻和加速度的影响,并可以使用不同类型的约束条件.实例计算表明,压裂水平井的流动可分为非稳态阶段和拟稳态阶段.在非稳态阶段,各条裂缝的产量相差不大,总产量随着裂缝条数的增加呈线性增加;在拟稳态阶段,两端裂缝产量高于中部裂缝的产量.受摩阻和加速度压降的影响,空间上位置对称的裂缝在流量上呈现不对称性.井筒内压力损失的存在将使水平井的产量降低,并使井筒内的压力分布不均匀.在最小井底流压的基础上固定流量时,裂缝条数越多,稳产期也越长.
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| 关 键 词： | 水平井 非稳态 压降 裂缝 |
| 收稿时间： | 2008-11-26 |
| 修稿时间： | 2009-05-04 |
A Coupling Model of Low Permeability Reservoir and Fractured Horizontal Wellbore in Nonsteady State |
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| LIAN Peiqing,CHENG Linsong,CAO Renyi,HUANG Shijun.A Coupling Model of Low Permeability Reservoir and Fractured Horizontal Wellbore in Nonsteady State[J].Chinese Journal of Computational Physics,2010,27(2):203-210. |
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| Authors: | LIAN Peiqing CHENG Linsong CAO Renyi HUANG Shijun |
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| Institution: | Faculty of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China |
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| Abstract: | An unsteady model of fractured horizontal wellbore coupling with a box-shaped reservoir is constructed with consideration of anisotropy in a low permeability reservoir. Solution of the model is shown. Pressure drops of friction and acceleration are considered under different types of constraints. Flow condition in fractured horizontal well is divided into early transient period and pseudo-steady period. In transient period, the output from each fracture differs little, and total production rate increases li... |
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| Keywords: | horizontal well non-steady state pressure drop fracture |
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