石油学报 ›› 2006, Vol. 27 ›› Issue (3): 61-64.DOI: 10.7623/syxb200603013

• 地质勘探 • 上一篇    下一篇

各向异性倾斜地层双侧向测井响应数值模拟

邓少贵1, 仝兆岐1, 范宜仁1,2   

  1. 1. 中国石油大学地球资源与信息学院 山东 东营 257061;
    2. 大港油田博士后工作站 天津 300280
  • 收稿日期:2005-05-11 修回日期:2005-10-17 出版日期:2006-05-25 发布日期:2010-05-21
  • 作者简介:邓少贵,男,1970年12生,1995年毕业于石油大学测井专业,现为中国石油大学在读博士研究生,讲师,主要从事电法测井理论计算及岩石物理的教学和科研工作.E-mail:Dengshg@mail.hdpu.edu.cn
  • 基金资助:
    国家高技术研究发展计划(863)项目(863-306-ZT01-02-3);国家自然科学基金项目(40574030)联合资助.

Numerical simulation of dual laterolog response in tilted anisotropic formation

Deng Shaogui1, Tong Zhaoqi1, Fan Yiren1,2   

  1. 1. Faculty of Geo-resources and Information, China University of Petroleum, Dongying 257061, China;
    2. Working station for Postdoctoral Scientific Research, PetroChina Dagang Oilfield Company, Tianjin 300280, China
  • Received:2005-05-11 Revised:2005-10-17 Online:2006-05-25 Published:2010-05-21

摘要: 利用三维有限元法,模拟了电性各向异性倾斜沉积岩层的双侧向测井响应。模拟结果表明:双侧向测井响应不仅受到地层倾角的影响,而且还受到地层电性各向异性的影响。在水平地层条件下,双侧向测井响应主要受到层理方向上地层电阻率的影响;在倾斜地层条件下,垂向上的地层电阻率对测井响应的影响增大。电性各向异性倾斜地层不仅造成电阻率曲线形态的变化,而且深、浅电阻率幅度差异更为复杂,给利用深、浅电阻率幅度差异定性识别油气层造成困难。

关键词: 倾斜地层, 各向异性, 电阻率, 双侧向测井, 三维数值模拟

Abstract: The response of dual laterolog in tilted anisotropic sedimentary formation was simulated with the three-dimensional finite element method. The simulation shows that the log response is influenced by formation dip and formation anisotropy. The response of electronic log mainly reflects the resistivity of formation in the bedding direction in horizonal formation. However, the influence of vertical resistivity of formation becomes more significant in tilted formation. In the case of a tilted anisotropic formation, the resistivity log shape is quite different from that usually found in the vertical and isotropic formation. In addition, the resistivity difference between deep and shallow laterolog becomes complex and unreliable for identifying the pay zone.

Key words: tilted formation, anisotropy, resistivity, dual laterolog, three-dimensional numerical simulation

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