新疆石油地质

新疆石油地质 ›› 2001, Vol. 22 ›› Issue (3): 251-252.

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衰减型油井压力恢复曲线的应用

李发印1, 魏南宁2, 赵晓凯2   

  1. 1.大庆职工大学油田开发系,黑龙江 大庆163255;
    2.大庆油田公司采油三厂,黑龙江 大庆 163255
  • 收稿日期:2000-07-25 出版日期:2001-06-01 发布日期:2020-08-14
  • 作者简介:李发印（1964-）,男,河南新密人,副教授,油藏工程。

Application of Pressure-Build-up Curves in Attenuation Wells

LI Fa-yin, WEI Nan-ning, ZHAO Xiao-kai   

  • Received:2000-07-25 Online:2001-06-01 Published:2020-08-14
  • About author:LI Fa-yin (1964-), Male, Associate Professor, Reservoir Engineering, Oilfield Development Department, Daqing Worker's College, Daqing, Heilongjiang 163255, China

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摘要： 应用衰减型油井压力恢复曲线方程,对大庆油田萨中地区51口聚驱井、密井网和基础井网的油井进行了计算,结果表明:经典半对数方法出现直线段的井仅占23.5%,而衰减型方程出现直线段的油井则占98%;衰减型曲线方程不仅可以确定出稳定的地层渗透率等参数,而且还可以有效判别近井地带污染情况,解释一-些地区地层压力与注采比变化的异常现象。

关键词: 衰减, 压力恢复曲线, 地层压力, 渗透率, 近井地带

Abstract: The paper made a calculation on the 51 polymer flooding wells, infilled well patterns and oil wells of basic well patterns in Sazhong region in Daqing oilfield, applying the equation of attenuating well pressure build-up curves and the result indicated that (1) the number of wells with straight-line portion calculated with classical send-log methods account for only 23.5% of the total, while the wells with straight-line portion calculated with attenuation equation account for 98%; (2) attenuation curve equation can be not only used to determine the parameters of the stable formation permeability,but can also identify effectively the near-well bore contamination and interpret the abnormal phenomenonof formation pressure and injection to production ratio in some parts of the field.

Key words: attenuation, pressure build-up curve, formation pressure, Permeability, immediate vicinity of well-bore

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