新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (5): 599-602.

• 油藏工程 • 上一篇    下一篇

低渗透油藏水平井井网开发产能研究

赵静1,2, 景凡1, 王海忠1   

  1. 1.中国石油 吉林油田分公司 勘探开发研究院,吉林 松原 138000;
    2.大庆石油学院 地球科学学院,黑龙江 大庆 163318
  • 收稿日期:2008-11-18 修回日期:2009-01-19 出版日期:2009-10-01 发布日期:2020-09-30
  • 作者简介:赵 静（1975-）,女,吉林松原人,博士,油气田开发, （Tel）13159586019（E-mail）zhaoy0621@126.com.
  • 基金资助:
    黑龙江省科技攻关项目,水平井产能设计和开发指标预测方法研究（GZ05A301）资助

Study on Productivity of Low Permeability Reservoir Developed by Horizontal Well Pattern

ZHAO Jing1,2, JING Fan1, WANG Hai-zhong1   

  1. 1. Research Institute of Exploration and Development, Jilin Oilfield Company, PetroChina, Songyuan, Jilin 138000, China;
    2.College of Earth Sciences, Daqing Petroleum Institute, Daqing, Heilongjiang 163318, China
  • Received:2008-11-18 Revised:2009-01-19 Online:2009-10-01 Published:2020-09-30

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摘要： 利用水电相似原理和等值渗流阻力法,同时考虑启动压力梯度,对低渗透油藏水平井与直井联合开发的四点法、五点法、七点法及九点法井网产能计算公式进行了理论推导,分别给出了上述 4 种布井方式下水平井产能计算公式,并分析了穿透比、储集层厚度及启动压力梯度等方面对不同井网产能的影响因素。分析结果表明,对于低渗透油藏,由于启动压力梯度的存在,使得不同井网产能比均减小;随着穿透比的增大,水平井不同井网产能比均增大;随着储集层厚度的增大,不同井网产能比均减小。这一研究结果可应用于现场开发方案的编制及井网产能预测。

关键词: 低渗透油气藏, 水平井, 井网, 产能, 启动压力

Abstract: The productivity calculation formulae for low permeability reservoir developed by vertical well integrated with horizontal well patterns including inverted 4-spot, inverted 5-spot, inverted 7-spot and inverted 9-spot patterns are theoretically deduced using hydroelectricity similarity principle and equivalent filtrational resistance method, considering starting pressure gradient, and four kinds of formulae for calculation of productivity of horizontal wells by these patterns are offered. And the factors affecting the productivities from these different patterns are analyzed in terms of penetrating proportion, reservoir thickness and starting pressure gradient. The results show that the different well patterns' productivity ratios by horizontal well process will be reduced for existence of starting pressure gradient; with the increase of penetrating proportion, the ratios will be increased; with the increase of reservoir thickness, the ratios will be decreased in view of low permeability reservoir. These conclusions can be used for design of field development program and prediction of these productivities.

Key words: low permeability reservoir, horizontal well, well pattern, productivity, starting pressure

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