油气藏评价与开发 ›› 2019, Vol. 9 ›› Issue (2): 21-24.

• 油气藏评价 • 上一篇    下一篇

窄河道普通稠油油藏见水规律研究

孙强,周海燕,石洪福,王记俊,孔超杰   

  1. 中海石油(中国)有限公司天津分公司,天津 300459
  • 收稿日期:2018-08-20 出版日期:2019-04-26 发布日期:2019-05-07
  • 作者简介:孙强(1988—),男,助理工程师,油田开发。
  • 基金资助:
    国家科技重大专项"渤海油田加密调整及提高采收率油藏工程技术示范"(2016ZX05058001)

Research on water production rule of heavy oil reservoirs in narrow channels

Sun Qiang,Zhou Haiyan,Shi Hongfu,Wang Jijun,Kong Chaojie   

  1. Tianjin Branch of CNOOC(China)Co., Ltd., Tianjin 300459, China
  • Received:2018-08-20 Online:2019-04-26 Published:2019-05-07

摘要:

普通稠油油藏存在启动压力梯度,渗流规律不符合达西定律,常规产水规律理论在普通稠油油藏中难以适用。在考虑非达西渗流规律的基础上,基于流管法和油水两相非活塞式水驱油理论,推导了窄河道普通稠油油藏油井含水率和采出程度的计算公式,分析了油井含水上升规律。结果表明,原油黏度越大,启动压力梯度越大,含水上升速度越快,水驱波及带的宽度越小,采收率越低。根据模型可优化得到窄河道油藏的合理注采参数,对实际油藏开发有一定的指导意义。

关键词: 窄河道, 普通稠油, 启动压力梯度, 非活塞式驱替, 流管法, 产水规律

Abstract:

The start-up pressure gradient existed in the ordinary heavy oil reservoir, the seepage rules could not satisfy the Darcy's rule, and the theory of conventional water production rule was difficult to apply in the ordinary heavy oil reservoirs. On the basis of non-Darcy percolation rule, and the theory of the flow tube method and the oil-water two-phase non-piston water flooding, we derived the calculation formulas of water cut and recovery degree of heavy oil reservoirs in narrow channels, and analyzed the water cut rising rules. The results showed that if the viscosity of crude oil was high, the starting pressure gradient would be great, the rate of water cut would be fast, the width of water sweep zone would be small, and the oil recovery would be low. The reasonable injection and production parameters of narrow channel reservoir could be obtained by the model, which had certain guiding significance for actual reservoir development.

Key words: narrow channel, conventional heavy oil reservoir, start-up pressure gradient, non-piston displacement, stream-tube method, water production rule

中图分类号: 

  • TE349