西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

CO2 驱油泡沫防气窜技术实验研究

刘祖鹏1 *,李兆敏2   

  1. 1. 中国石化胜利油田分公司勘探开发研究院,山东东营257015
    2. 中国石油大学(华东)石油工程学院,山东青岛266555
  • 出版日期:2015-10-01 发布日期:2015-10-01
  • 通讯作者: 刘祖鹏,E-mail:lzp_2008@163.com
  • 基金资助:

    国家科技重大专项(2011ZX05009);国家自然科学基金(51034007)。

An Experimental Study on Anti-channeling Technology with Foam in#br# CO2 Flooding

Liu Zupeng1*, Li Zhaomin2   

  1. 1. Petroleum Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying,Shandong 257015,China
    2. College of Petroleum Engineering,China University of Petroleum,Qindao,Shandong 266555,China
  • Online:2015-10-01 Published:2015-10-01

摘要:

腰英台油田CO2 驱油先导试验中CO2 过早气窜,降低波及体积,影响区块产能。采用岩芯切割技术制作了
低渗透裂缝性岩芯模型,通过岩芯驱替实验研究了不同CO2 泡沫注入方式对低渗透裂缝性岩芯封堵能力的影响以及
水驱或气驱后CO2 泡沫驱提高采收率的效果。实验结果表明:CO2 泡沫能增加流体在裂缝中的流动阻力,有效降低驱
替液流度,阻力因子在46∼80;泡沫在裂缝中存在启动压力,它将影响泡沫起始阶段的流动。对于水驱和气驱之后采
用泡沫驱的岩芯,采收率分别增加了26% 和35%,揭示了泡沫提高低渗透裂缝性油藏采收率机理。

关键词: 低渗透裂缝性油藏, 泡沫封堵, 提高采收率, 泡沫驱

Abstract:

In the pilot test of CO2 flooding in Yaoyingtai Oilfield,early CO2 channeling decreased its sweeping volume and
production capacity. Low permeability fractured core models were generated by core cutting technique. The foam blocking
ability and flooding performance were measured by core flooding experimental apparatus and the effects of different foam
injection schemes on foam plugging and EOR results of foam displacement following water and gas flooding were conducted.
The experiment results show that CO2 foam can increase fluid flow resistance in the fracture,reduce liquid motility effectively
with resistance factors between 46∼80;there is a foam apparent viscosity in the fracture that has an impact on the initial flow of
foam;for the oil saturated fractured cores flooded by water and gas,oil recovery was increased by 26% and 35% respectively
and the mechanism of CO2 foam EOR in low permeability fractured reservoirs are revealed.

Key words: low-permeability fractured reservoir, foam plugging, enhanced oil recovery, foam flooding

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