Gas Channeling and Migration of CO2 in the Non-Homogeneous Porous Media

Journal of Petrochemical Universities ›› 2010, Vol. 23 ›› Issue (2): 43-46.

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Gas Channeling and Migration of CO₂ in the Non-Homogeneous Porous Media

Enhanced Oil Recovery Research Center in China University of Petroleum, Beijing 102249, P.R.China

Received:2009-11-06 Published:2010-06-25 Online:2010-06-25

CO₂ 在非均质多孔介质中的气窜与运移

林杨,刘杨,胡雪,赵凤兰,侯吉瑞

中国石油大学(北京)提高采收率研究中心, 北京102249

作者简介:林杨(1982 -), 男, 黑龙江绥化市, 在读硕士
基金资助:
国家973 项目(2006CB705800);国家自然科学基金项目(50804052)

Abstract

Abstract:

Based on some indoor physical simulation and the corresponding experimental equipments, to the channeling laws of CO₂ in the absence of filling phase and filling phase porous medium was researched. It specifically researched the impact that the factors have on CO₂ channeling level, such as temperature, pressure, permeability, high permeability and low permeability hierarchy. The results show that it reveals exponential relationship between the injection pressure and the breakthrough time of gas in porous media, and there is an empirical correlation can predict the gas channeling time, the differential permeability of hypertonic layer and low permeability layer has a great influence to the time of gas channeling and the flow rate of gas in the context of a certain critical pressure. The empirical regression equation can predict the swept volume of gas prior to the gas channeling under a certain differential.

Key words:

CO₂, , Heterogeneity, , Differential, , Porous media, , Gas channeling

摘要： 通过室内物理模拟, 建立了相应的实验装置, 对于CO2 在无填充相、有填充相多孔介质中的窜逸规
律, 进行深入研究。具体研究了温度、压力、渗透率、高渗层与低渗层级差等影响因素对于CO2 窜逸程度的影响。结
果表明, 注入压力与气体在多孔介质中的突破时间呈幂指数关系, 且有经验关系式可以预测气体的气窜时间, 高渗
层与低渗层的渗透率级差在一定的临界压力范围内对气体的气窜时间和气体的流速影响很大, 有经验回归公式可
以预测一定级差下气窜之前气体的波及体积。

关键词: CO2 , 非均质 , 级差 , 多孔介质 , 气窜

LIN Yang, LIU Yang, HU Xue, et al. Gas Channeling and Migration of CO₂ in the Non-Homogeneous Porous Media[J]. Journal of Petrochemical Universities, 2010, 23(2): 43-46.

林杨,刘杨,胡雪,赵凤兰,侯吉瑞. CO₂ 在非均质多孔介质中的气窜与运移[J]. 石油化工高等学校学报, 2010, 23(2): 43-46.

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Gas Channeling and Migration of CO₂ in the Non-Homogeneous Porous Media

CO₂ 在非均质多孔介质中的气窜与运移

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