石油学报 ›› 2006, Vol. 27 ›› Issue (S1): 124-128.DOI: 10.7623/syxb2006S1025

• 油田开发 • 上一篇    下一篇

低渗透储层油、气、水三相渗流特征

林玉保1,2, 杨清彦2, 刘先贵1   

  1. 1. 中国科学院渗流流体力学研究所 河北廊坊 065000;
    2. 大庆油田有限责任公司勘探开发研究院 黑龙江大庆 163712
  • 收稿日期:2006-07-25 修回日期:2006-10-30 出版日期:2006-12-25 发布日期:2006-12-25
  • 作者简介:林玉保,男,1965年2月生,1986年毕业于吉林大学物理系,现为大庆油田有限责任公司勘探开发研究院高级工程师,中国科学院渗流流体力学研究所在读博士研究生,主要从事油层物理实验研究工作.E-mail:linyubao@tom.cn
  • 基金资助:
    中国石油天然气股份有限公司科技攻关项目(030127)部分研究成果。

Three-phase seepage characteristics of oil, gas and water in low permeability reservoirs

Lin Yubao1,2, Yang Qingyan2, Liu Xiangui1   

  1. 1. Institute of Porous Flow & Fluid Mechanics, Chinese Academy of Sciences, Langfang 065007, China;
    2. Research Institute of Exploration and Development, PetroChina Daqing Oilfield Company Ltd., Daqing 163712, China
  • Received:2006-07-25 Revised:2006-10-30 Online:2006-12-25 Published:2006-12-25

摘要: 为了合理地开发外围低渗透油气田,建立有效驱动体系,提供可借鉴的实验分析和渗流解释,通过室内实验研究分析了低渗透储层岩样在单相油驱、两相水驱油以及气驱油条件下的启动压力特征;系统地研究和评述了大庆外围油田油水、油气两相流体渗流特征,利用STONE 标准化概率模型预测了低渗透储层油、气、水三相共存时油相渗流变化特点和规律。结果表明,对于低渗透岩样,无论是单相还是两相驱替实验都存在着启动压力,两相流体渗流启动压力大于单相流动时启动压力,三相流动时要比两相渗流阻力大,任意两相渗流系统的共渗透范围均大于三相渗流时共渗透范围,在低渗透油气田开发时应避免三相流动的发生。

关键词: 低渗透, 启动压力梯度, 相对渗透率, STONE概率模型, 水驱油, 三相相对渗透率

Abstract: In order to develop reasonably low permeability oil-gas fields in Daqing peripheral area and establish the effective driving system to provide useful experimental analysis and seepage interpretation, laboratory researches on the start-up pressure gradient of low permeable core sample under the conditions of mono-phase oil flow, two-phase fluids of oil/water and of oil/gas have been carried out. The characteristics of two-phase fluids of oil/water and oil/gas in Daqing peripheral low permeability oilfields have been systematically analyzed. By means of STONE probability model, variable characteristics and rules for oil phase seepage in the coexistence of water/oil/gas in low permeability reservoirs have been predicted. Results indicate that whenever in mono-phase or in two-phase driving experiments, there always is a start-up pressure gradient for low permeable rock sample. The start-up pressure gradient in two-phase flow is larger than that of mono-phase. Three-phase seepage resistance is larger than that of two-phase and syngenesis flow range of two-phase flow is larger than that of three-phase, so three-phase flows should be avoided during development of low permeability oilfield.

Key words: low permeability, start-up pressure gradient, relative permeability, STONE probability model, water flooding experiment, three-phase relative permeability

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