非均质油藏CO2 泡沫与CO2交替驱提高采收率研究

doi:10.3696/j.issn.1006-396X.2011.06.001

石油化工高等学校学报 ›› 2011, Vol. 24 ›› Issue (6): 1-5.DOI: 10.3696/j.issn.1006-396X.2011.06.001

• 石油化工 • 下一篇

非均质油藏CO₂泡沫与CO₂交替驱提高采收率研究

李兆敏,张超,李松岩,李宾飞,张东

中国石油大学石油工程学院

收稿日期:2011-12-06 出版日期:2011-12-25 发布日期:2011-12-25
作者简介:李兆敏（１９６５－），男，山东阳谷县，教授，博士
基金资助:
国家自然科学基金重点资助项目(51034007)

Experiment Research of CO₂ Foam Alternating CO₂Displacement EOR Technology in Heterogeneous Reservoir

College of Petroleum Engineering, China University of Petroleum，Qingdao Shandong 266580，P.R.China

Received:2011-12-06 Published:2011-12-25 Online:2011-12-25

摘要/Abstract

摘要：

针对非均质油藏注CO₂驱油时普遍存在CO₂易沿高渗层过早发生气窜，导致CO₂驱提高采收率低，低渗层难以动用的问题，开展了CO₂不同注入方式优选的室内试验，并对优选出的注入方式进行了包括段塞大小、段塞比以及气液体积比在内的影响因素的研究。结果表明：相对于CO₂气驱、CO₂水气交替驱以及CO₂泡沫驱，CO₂泡沫与CO₂交替驱（FAG）能够解决层内矛盾，延缓气窜发生时间，扩大波及体积，提高采收率；FAG驱存在最优注入段塞大小0.4 PV，最佳段塞比1∶1以及最佳气液体积比1∶1。

关键词: CO₂泡沫驱 , 非均质油藏 , 注入参数优选 , CO₂泡沫与CO₂交替驱

Abstract: For CO₂ flooding in heterogeneous reservoir, gas channeling of CO₂ is easy and premature to happen along the high permeable layers, which leads to low recovery efficiency of CO₂ flooding and low-permeability reservoir is difficultly produced, optimal selection of different CO₂ injection modes was developed in laboratory test. The influence of slug size, foam-gas ratio and surfactant-gas ratio on the optimal injection mode was also studied. The results show that foam-gas alternative flooding is an effective practice to tackle serious interlayer contradiction and prevent early gas break-though, leading to a high oil recovery. The best parameters for FAG are as following: slug size (0.4 PV), foam-gas ratio (1∶1), surfactant-gas ratio (1∶1).

Key words:

CO₂ foam flooding, , Heterogeneous reservoir, , Injection parameters optimization, , CO₂ foam alternating CO₂displacement

李兆敏,张超,李松岩,李宾飞,张东. 非均质油藏CO₂泡沫与CO₂交替驱提高采收率研究[J]. 石油化工高等学校学报, 2011, 24(6): 1-5.

LI Zhao-min,ZHANG Chao,LI Song-yan,et al. Experiment Research of CO₂ Foam Alternating CO₂Displacement EOR Technology in Heterogeneous Reservoir[J]. Journal of Petrochemical Universities, 2011, 24(6): 1-5.

非均质油藏CO₂泡沫与CO₂交替驱提高采收率研究

Experiment Research of CO₂ Foam Alternating CO₂Displacement EOR Technology in Heterogeneous Reservoir

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