新疆石油地质

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (4): 286-288.

• 油气勘探 • 上一篇    下一篇

用自然电位解释孔隙压力

王连生1, 马志红1, 郭占谦2, 燕守斌3   

  1. 1.吉林大学,吉林 长春 130061;
    2.中国石油大庆油田有限责任公司勘探开发研究院,黑龙江 大庆 163413;
    3.大庆石油管理局测井公司,黑龙江 大庆 163000
  • 收稿日期:2002-10-14 修回日期:2002-12-17 发布日期:2021-01-13
  • 作者简介:王连生(1966-),男,黑龙江宝清人,在读博士研究生,高级工程师,石油地质。联系电话:0459-5608320

Application of Spontaneous Potential in Interpretation of Pore Pressure

WANG Lian-sheng1, MA Zhi-hong1, GUO Zhan-jian2, YAN Shou-bin3   

  1. 1. Jilin University, Changchun, Jilin 130061, China;
    2. Research Institute of Exploration and Development, Daqing Oilfield Co. Ltd, PetroChina, Daqing, Heilongjiang 163413, China;
    3. Well Log Company, Daqing Petroleum Administration Bureau, CNPC, Daqing, Heilongjiang 163000, China
  • Received:2002-10-14 Revised:2002-12-17 Published:2021-01-13

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摘要： 过去常采用声速法估算储集层孔隙压力,对于目前层间压力变化极大的大庆油田,声速法遇到了困难。经长期注水开发的砂岩储集层,自然电位的变化主要由过滤电位的变化所引起,而过滤电位与压差密切相关,由此引出了应用自然电位解释孔隙压力方法。以大庆油田砂岩储集层为例,依据自然电位测井原理和毛管流动电位理论提出了适用于油田开发过程中解释砂岩孔隙压力的自然电位法,提高了压力解释精度,可节约大量的测试费用,为油田开发过程中孔隙压力解释提供了新的思路。

关键词: 自然电位, 孔隙压力, 测井解释, 数学模型, 油田开发

Abstract: The sonic velocity approach used to be applied for estimation of reservoir pore pressure. However, it doesn’t operate to Daqing oil-field with diversified current interlayer pressures. Following long-term waterflooding, the sandstone reservoir has variable spontaneous potential (SP) resulted from variable electrofiltration potential which is closed with the pressure drawdown. The SP approach is introduced from it. Taking the sandstone reservoir in Daqing oilfield as an example, this paper presents a SP approach applicable to interpret the sand pore pres-sure variations during the field development, based on SP log principle and capillary flow potential theory. It is indicated that as a new thought using this approach may improve the accuracy in the pressure interpretation, hence save a great amount of testing fees.

Key words: SP, pore pressure, well log interpretation, mathematical model, oilfield development

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