力学与实践 ›› 2012, Vol. 34 ›› Issue (5): 27-31,51.DOI: 10.6052/1000-0879-12-063

• 应用研究 • 上一篇    下一篇

低渗岩心驱替过程中的压力分布特征研究

吴岱峰1, 鲁晓兵1, 刘庆杰2, 高建2   

  1. 1. 中国科学院力学研究所,北京 100190;
    2. 中国石油勘探开发研究院提高石油采收率国家重点实验室,北京 100083
  • 收稿日期:2012-02-17 修回日期:2012-05-10 出版日期:2012-10-15 发布日期:2012-10-25
  • 通讯作者: 吴岱峰, 1987 年生,男,硕士,现就读于中国科学院力学研究所,主要从事低渗油藏开发中的渗流机理研究方面的工作.E-mail:wudaifeng87@yahoo.com.cn
  • 基金资助:

    国家重点基础研究发展项目《能源高效利用中的基础科学问题(2010CB736206)》资助.

PRESSURE DISTRIBUTION IN FLOODING OF LOW PERMEABILITY RESERVOIRS

WU Daifeng1, LU Xiaobing1, LIU Qingjie2, GAO Jian2   

  1. 1. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190,China;
    2. State Key Laboratory for EOR, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
  • Received:2012-02-17 Revised:2012-05-10 Online:2012-10-15 Published:2012-10-25
  • Contact: Dai-Feng WU

摘要:

考虑低渗岩心的应力敏感性,通过实验和数值计算,研究了一维水驱油过程中,压力的分布及变化规律,并对其影响因素进行了分析. 结果表明:压力分布由于受到应力敏感性的影响而显示出明显的非线性特征,在前缘面处存在一个明显的分界点;应力敏感性程度、黏度比对压力分布的影响较大.

关键词:

低渗透油藏|应力敏感性|压力分布特征

Abstract:

For low permeability reservoirs, the stress sensitivity cannot be neglected, and it makes the pressure system very complicated. In a low permeability reservoir, an effective system of the displacement pressure is a basis to guarantee the efficient development. Therefore, the research of the characteristics of the pressure distribution in a low permeability reservoir is important to the reservoir development. In this paper, the stress sensitivity of the low permeability core is taken into consideration, and the distribution of the pressure in the process of one-dimensional waterflooding is studied through experiments and numerical calculations, and the factors which affect the pressure distribution are also analyzed. The results show that, due to the effect of stress sensitivity, the pressure distribution sees obvious nonlinear characteristics, and there is an evident demarcation point at the displacing front; the degree of the stress sensitivity and the viscosity ratio have a great influence on the pressure distribution.

Key words:

low permeability reservoirs|stress sensitivity|pressure distribution

中图分类号: