西南石油大学学报(自然科学版) ›› 1995, Vol. 17 ›› Issue (3): 53-60.DOI: 10.3863/j.issn.1000-2634.1995.03.007

• 地质勘探 • 上一篇    下一篇

孔隙度误差对岩电参数的影响及校正公式和图版

张开洪1 陈一健1 陈福煊2
  

  1. 1.完井中心 2.勘探系
  • 收稿日期:1994-12-19 修回日期:1900-01-01 出版日期:1995-08-20 发布日期:1995-08-20
  • 通讯作者: Zhang Kai-hong

Influences of Porosity Error on Electrical Properties of Rotk and Updating Formula as Well as Correction Charts

Zhang Kai-hong 1 Chen Yi-jian1 Chen Fu-xuan2

  

  1. 1.Center of Well Completion Techniques 2. Dept, of Exploration
  • Received:1994-12-19 Revised:1900-01-01 Online:1995-08-20 Published:1995-08-20
  • Contact: Zhang Kai-hong

摘要: 岩石孔隙度误差对岩电系数中的含水饱和度及饱和度指数具有显著的影响,而对胶结指
数的影响较小。这种影响随着孔隙度误差的增大而增大。在孔隙度误差相同情况下,低孔岩样受到的影响大于高孔岩样。满足常规岩心分析孔隙度精度(≤士0. 5Pu)的岩样,可以不进行胶结指数的校正,但应对孔隙度小于20%的岩电实脸的岩样进行含水饱和度及饱和度指数的校正。当孔隙度误差大于士0.5Pu时,应对孔隙度小于15写的老样进行胶结指数的校正;对所有若样进行含水饱和度及饱和度指数的校正。

关键词: 孔隙度, 岩电系数, 胶结指数, 含水饱和度, 饱和度指数, 误差校正

Abstract: Error of porosity has a great influence upon water saturation (S,.)and saturation expo-nent u.,may be free from cement factor correction,while it is necessary for those with a poeosity less than 20%to have a water saturation and saturation exponent factor correction. When the error of porosity is greater than士0. 5 p. u.,it is necessary for the samples with a poros-ity less than 15%to have a cement factor correction, and all the samples to make a water saturation and saturation exponent correction.

Key words: Porosity, Rock electrical parameter, Cement factor, Water saturation, Saturation exponent, Error correction

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