新疆石油地质

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (3): 266-268.

• 油藏工程 • 上一篇    下一篇

非均质多层低渗油藏合理注采井距的确定

李留仁1,2, 胡永乐1   

  1. 1.中国石油 勘探开发研究院,北京 100083;
    2.西安石油 大学 石油 工程学院,西安 710065
  • 收稿日期:2009-11-26 修回日期:2010-01-12 发布日期:2020-09-17
  • 作者简介:李留仁(1963-),男,河南清丰人,副教授,在读博士研究生,油气田开发,(Tel)13520220076(E-mail)lilr2009@sina.com.cn.
  • 基金资助:
    国家科技重大专项(2008ZX05016)

Determination of Reasonable Injection-Production Well Spacing in Heterogeneous Multi-Layered Low Permeability Reservoirs

LI Liu-ren1,2, HU Yong-le1   

  1. 1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    2. Department of Petroleum Engineering, Xi'an Petroleum University, Xi'an, Shaanxi 710065, China
  • Received:2009-11-26 Revised:2010-01-12 Published:2020-09-17

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摘要： 由于油水在储集层中的流动存在启动压力梯度,只有在渗流场压力梯度大于启动压力梯度的条件下,流体才能流动。对于非均质多层低渗油藏,每一层都有一极限注采井距。只有当极限注采井距大于实际注采井距时,储量方能动用,否则则不能动用。据此充分考虑了多层低渗油藏的纵向非均质性,建立了水驱储量动用程度与注采井距的关系,分析了影响纵向非均质多层低渗油藏水驱储量动用程度的因素,提出了根据低渗油藏水驱储量动用程度确定合理注采井距的新方法。

关键词: 低渗透油气藏, 启动压力, 注采井距, 水驱, 储量动用程度

Abstract: There is start pressure gradient when oil/water flow in low permeability reservoirs. When the pressure gradient is greater than the start pressure gradient, fluid can flow. Every layer has limit injection-production well spacing in heterogeneous multi-layered low permeability reservoirs. When the limit well spacing is larger than a real injection-production well spacing, the reserves in the layer can be produced, or can not. So with the full-consideration of the vertical heterogeneity in such reservoirs, the relationship between the producing degree of reserves and the injection-production well spacing in the reservoirs is established. The factors affecting the producing degree are analyzed. A new method for determination of reasonable injection-production well spacing according to the water-drive reserves producing degree in low permeability reservoirs is proposed.

Key words: low permeability reservoir, start pressure gradient, injection-production well spacing, water flood, reserves producing degree

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