石油与天然气地质 ›› 2015, Vol. 36 ›› Issue (4): 695-700.doi: 10.11743/ogg20150421

• 技术方法 • 上一篇    下一篇

从电阻率数据中得到相对渗透率的新方法

马东1,2, 吴华3, 曾鸣4   

  1. 1. 长江大学 油气资源与勘探技术教育部重点实验室, 湖北 武汉 430100;
    2. 长江大学 石油工程学院, 湖北 武汉 430100;
    3. 江汉油田勘探开发研究院, 湖北 武汉 433124;
    4. 中海油服油田生产事业部, 天津 300452
  • 收稿日期:2015-03-10 修回日期:2015-05-20 出版日期:2015-08-08 发布日期:2015-08-28
  • 第一作者简介:马东(1984—),男,博士、讲师,油层物理和油藏工程。E-mail:madong@yangtzeu.edu.cn。
  • 基金项目:

    国家油气重大专项(2011ZX05015-002);湖北省自然科学基金项目(2015CFB635);“油气资源与勘探技术”教育部重点实验室项目(K2014-05)。

A new method for estimating relative permeability with resistivity data

Ma Dong1,2, Wu Hua3, Zeng Ming4   

  1. 1. Key Laboratory of Oil & Gas Resources and Exploration Technology, Ministry of Education, Yangtze University, Wuhan, Hubei 430100, China;
    2. Petroleum engineering College, Yangtze University, Wuhan, Hubei 430100, China;
    3. Research Institute of Exploration and Development, SINOPEC Jianghan Oilfield Company, Qianjiang, Hubei 433124, China;
    4. Production Management Department, CNOOC China Oilfield Services. Limted, TianJin 300452, China
  • Received:2015-03-10 Revised:2015-05-20 Online:2015-08-08 Published:2015-08-28

摘要:

相对渗透率是储层评价、油田开发和油藏数值模拟等方面的重要参数,一般通过稳态和非稳态法来获取相对渗透率数据。由于相对渗透率实验所需周期长、成本高,且条件较为苛刻,因此获取相对渗透率数据具有一定难度,而通过现场电阻率测井和室内实验则较为容易获取电阻率数据。本文通过毛细管束模型和阿尔奇电阻率公式,并在引入迂曲度的情况下,推导了一种从电阻率数据中计算相对渗透率数据的新方法。通过文献数据和实验数据对新方法的计算精度进行了验证。结果表明,从电阻率数据得到的水相相对渗透率数据具有很高的精度。在缺少相对渗透率数据的情况下,可以通过新方法从电阻率数据中估算水相相对渗透率。

关键词: 相对渗透率, 电阻率, 迂曲度, 毛细管束模型

Abstract:

Relative permeability is a key parameter in reservoir description, oil & gas field development and numerical reservoir simulation.Steady-state and unsteady-state methods are often used for determining the parameter.However, the relative permeability can't easily be obtained through the experiments as they are often time-consuming, expensive, and sometimes require certain experimental conditions.In contrast, resistivity data are easy to get through laboratory measurements and well logging.This paper proposes a new method of getting relative permeability by using easily-obtained resistivity data through a combination of capillary tube model and Archie equation and introduction of tortuosity.The method was verified by data from the published literatures and experiment results.It shows that the relative permeability of water phase obtained through the method is highly comparable to that acquired through experiment method.So when relative permeability data are inadequate or unavailable, we can estimate the relative permeability of water phase by using the method based on resistivity data.

Key words: relative permeability, resistivity, tortuosity, capillary tube model

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