新疆石油地质 ›› 2010, Vol. 31 ›› Issue (6): 637-640.

• 油藏工程 • 上一篇    下一篇

低渗透油藏混合井网系统合理注采井距确定

郑伟1, 姜汉桥1, 陈民锋1, 辛俊武2, 赵刚3   

  1. 1.中国石油大学 石油工程教育部重点实验室,北京 102249;
    2.中国石油 新疆油田分公司 采油一厂,新疆 克拉玛依 834000;
    3.中国石化 胜利油田有限责任公司 钻井工程技术公司 定向井公司,山东 东营 257064
  • 收稿日期:2010-04-06 修回日期:2010-05-31 发布日期:2021-01-18
  • 作者简介:郑伟(1984-),男,山东五莲人,在读博士研究生,油气田开发,(Tel)13581541797(E-mail)weizheng_0601@163.com.
  • 基金资助:
    国家科技重大专项(2008ZX05024-02)

Study on Proper Well Spacing of Hybrid Pattern of Vertical Injector and Horizontal Producer in Low Permeability Reservoir

ZHENG Wei1, JIANG Han-qiao1, CHEN Min-feng1, XIN Jun-wu2, ZHAO Gang3   

  1. 1. MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
    2. No.1 Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    3. Directional Drilling Co., Shengli Oilfield Company Ltd., Sinopec, Dongying, Shandong 257064, China
  • Received:2010-04-06 Revised:2010-05-31 Published:2021-01-18

摘要: 从渗流理论出发,首次推导了直井注-水平井采混合井网系统井间沿程压力与压力梯度分布公式,并对其分布规律进行了分析。结合物理模拟实验得到的启动压力梯度数学表达式,提出了计算低渗透油藏混合井网注采井距的方法,分析了注采压差、渗透率和水平段长度对注采井距的影响。研究表明,混合井网系统所需要的生产压差远小于直井井网,因此混合井网更容易形成有效驱替,可以采取更大的注采井距。

关键词: 低渗透油藏, 混合井网, 压力梯度, 有效驱替, 注采井距

Abstract: Based on percolation theory, the formulae of interwell on-way pressure and pressure gradient distribution for vertical injectorhorizontal producer hybrid pattern system are deduced for the first time, and their variations are analyzed. Integrated with mathematic expression of the start-up pressure gradients given by physical modeling experiment, the method for well spacing of this hybrid pattern in low permeability reservoir is proposed, by which the influences of injection-production pressure differential, permeability and horizontal section length on this well spacing are analyzed. The study shows that the producing pressure differential required by this hybrid pattern system is much smaller than that by vertical well pattern. It is easier to create an effective displacement compared with vertical wells pattern, and larger injection-production well spacing can be taken.

Key words: low permeability reservoir, hybrid well pattern, pressure gradient, effective displacement, injection-production well spacing

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