西南石油大学学报(自然科学版) ›› 1991, Vol. 13 ›› Issue (4): 37-45.DOI: 10.3863/j.issn.1000-2634.1991.04.005

• 论文 • 上一篇    下一篇

考虑地层污染预测增产倍比的方法

古发刚 任书泉 陈昌文
  

  1. 石油开发系
  • 收稿日期:1990-12-13 修回日期:1900-01-01 出版日期:1991-11-20 发布日期:1991-11-20

CALCULATING METHOD OF STIMULATION RATIO CONSIDERING FORMATION DAMAGE

Gu Fa-gang Ren Shu-quan Chen Chang-wen

  

  1. Dept. of Oil Exploitation
  • Received:1990-12-13 Revised:1900-01-01 Online:1991-11-20 Published:1991-11-20

摘要:

本文根据压裂酸化施工后地层流体作非径向流动的特点,建立了以无因次压力表示的稳定流动数学模型,提出了有限差分求取增产倍比的数值计算方法。该方法全面考虑了钻井完井造成的井底污染、压裂酸化带来的裂缝壁面污染、有限裂缝导流能力等因素的影响,能准确预测压裂酸化井的增产倍比。

关键词: 地层损害, 压裂, 酸化, 裂缝导流能力, 产量预测, 数学模型, 计算方法

Abstract:

According to non-radial flow characteristic of fluid in formation after acid fracturing treatment, this paper has developed a steady flow mathematical model expressed in dimensionless pressure, and proposed a difference method for calculating stimulatiou ratio. The method all-sidedly considers influences of well-bore damage from well boring and well completion, fracture-wall damage from acid fracturing treatment, and finite fracture conductivity. It can be used to calculate the stimulation ratio of an acid fracturing well accurately.

Key words: Formation damage, Fracture conductivity, Acid fracturing, Production prediction, Mathematical model, Calculating method

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