岩性油气藏 ›› 2016, Vol. 28 ›› Issue (4): 82–87.doi: 10.3969/j.issn.1673-8926.2016.04.011

• 技术方法 • 上一篇    下一篇

带隔板底水气藏见水时间预测方法

黄全华,陆云,陈冲   

  1. 西南石油大学石油与天然气工程学院,成都610500
  • 出版日期:2016-07-20 发布日期:2016-07-20
  • 第一作者:黄全华(1968-),男,博士,副教授,主要从事油气藏工程研究工作。地址:(610500)四川省成都市新都区西南石油大学石油与天然气工程学院。E-mail:swpuhqh@126.com。
  • 基金资助:

    国家重大科技专项“亚太及南美地区复杂油气田渗流机理及开发规律研究”(编号:2011ZX05030-005-06)资助

Prediction of water breakthrough time for bottom-water gas reservoir with barrier

Huang Quanhua,Lu Yun,Chen Chong   

  1. School of Oil & Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,China
  • Online:2016-07-20 Published:2016-07-20

摘要:

气井水淹对气井产能和气藏采收率均具有较大影响,准确预测气井见水时间及延缓底水过早锥进对于底水气藏的合理开发至关重要。针对厚层气藏的高产气井,基于两相渗流理论及流体在多孔介质中的流动规律,建立了物理模型,推导了考虑非达西效应带隔板底水气藏见水时间公式,分析了人工隔板位置和长度对气井见水时间的影响,并利用作图法对人工隔板的位置和长度进行了优化。实例应用表明,人工隔板对于抑制底水起到了很好的作用,较大程度地延长了气井的无水采气期。该项研究对于带隔板底水气藏的见水时间预测以及无隔板底水气藏中人工隔板位置和长度的确定,均具有一定的指导作用。

关键词: 强水敏储层, 高压釜物理模拟, 稠油油藏, 沙一段, 金家油田

Abstract:

Water coning of gas well is an important factor for affecting gas well productivity and gas reservoir recovery efficiency. It is essential to accurately predict water breakthrough time of gas well and delay bottom water coning for rational development of bottom?water gas reservoir. In terms of high production gas wells of thick gas reservoirs, based on two phase flow theory and law of fluid flow in porous media, this paper established a physical model and deduced the water breakthrough time formula for bottom?water gas reservoir with barrier considering non-Darcy effect, and analyzed effects of the position and length of the artificial barrier on water breakthrough time of gas well, and optimized the position and length of the artificial barrier through graphic method. Case study shows that artificial barrier has a very good effect for inhibiting bottom water, and can greatly extend the waterless gas recovery period of the gas well. This study can guide the prediction of breakthrough time of bottom-water gas reservoirs with barrier and the design of artificial barrier for bottom?water gas reservoir without barrier.

Key words: strong water sensitive reservoirs, autoclave physics simulation, heavy oil reservoirs, the first member of Shahejie Formation, Jinjia Oilfield

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