| 流体边界层对低渗透油藏渗流特征的影响 |
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| 引用本文： | 刘卫东,刘吉,孙灵辉,李洋,兰喜艳.流体边界层对低渗透油藏渗流特征的影响[J].科技导报(北京),2011,29(22):42-44. |
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| 作者姓名： | 刘卫东 刘吉 孙灵辉 李洋 兰喜艳 |
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| 作者单位： | 1. 中国科学院渗流流体力学研究所,河北廊坊 065007;2. 中国石油勘探开发研究院廊坊分院,河北廊坊 065007;3. 中国石油天然气股份有限公司华北油田分公司勘探开发研究院,河北任丘 062552 |
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| 基金项目： | 国家科技重大专项(2008ZX05013-002) |
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| 摘 要： | 低渗透油藏孔喉细小、孔隙结构复杂,固液界面相互作用力很大,在靠近孔喉壁面处存在一层流体边界层,阻碍流体在孔喉中的流动。为研究流体边界层对低渗透油藏流体渗流特征的影响,以去离子水在半径分别为10.0,7.5和5.0μm的微圆管中流动的实验数据为基础,通过数据拟合分析,确定了流体流动速度、边界层厚度与压力梯度之间的关系。结果表明,由于流体边界层的存在,低压条件下,去离子水在不同半径微圆管中的流动偏离经典的达西流动规律,表现出非线性特征,且存在启动压力梯度;随着管径的降低,流动偏离达西渗流规律的程度增大,非线性越发明显;随压力梯度增加,流体边界层厚度呈指数规律递减,压力增大到一定程度后,趋于定值。运用不等径毛管束模型,给出低渗透油藏单相流体渗流公式。
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| 关 键 词： | 流体边界层 非线性渗流 低渗透油藏 不等径毛管束模型 |
| 收稿时间： | 2011-06-29 |
Influence of Fluid Boundary Layer on Fluid Flow in Low Permeability Oilfields |
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| LIU Weidong,LIU Ji,SUN Linghui,LI Yang,LAN Xiyan.Influence of Fluid Boundary Layer on Fluid Flow in Low Permeability Oilfields[J].Science & Technology Review,2011,29(22):42-44. |
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| Authors: | LIU Weidong LIU Ji SUN Linghui LI Yang LAN Xiyan |
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| Institution: | 1. Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Langfang 065007, Hebei Province, China ;2. PetroChina Research Institute of Petroleum Exploration & Development-Langfang, Langfang 065007, Hebei Province, China;3. Research Institute of Petroleum Exploitation and Development, Huabei Oilfield, China National Petroleum Corporation, Renqiu 062552, Hebei Province, China |
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| Abstract: | A fluid boundary layer would impede the flow of fluid near the pore and the throat of the rock in the low-permeability reservoir because of the small size of pore-throat, the complex pore structures and the large solid-liquid interfacial force. In order to study the influence of the fluid boundary layer on the fluid flow in a low permeability reservoir, the relationships between the fluid flow rate, the boundary layer thickness and the pressure gradient are obtained through analysis and fitting data, based ... |
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| Keywords: | fluid boundary layer nonlinear flow low permeability reservoir non-equivalent diameter capillary module |
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