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CO_2-FOAM INJECTION FOR ENHANCING OIL RECOVERY: A BRIEF REVIEW

机译：CO_2泡沫注射以提高采油率：简要回顾

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摘要

CO _( 2 ) -foam injection as a potential technique for enhancing oil recovery and carbon capture and storage has been proposed for overcoming the challenges involved during the process of CO _( 2 ) flooding. The positive impact of CO _( 2 ) foaming for enhancing oil recovery has been established by numerous experimental and theoretical studies and also by few pilot and field cases. However, there are still not sufficient data for solving the operational and conceptual issues. This may be the main reason for a not wide use of CO _( 2 ) foams for field applications. Mechanisms involved in CO _( 2 ) -foam injection, instability and collapse of foam under reservoir conditions, fluid flow behavior, and finding the best foaming agents are the main issues of this process. This paper presents a literature review of the most recent studies on the performance of CO _( 2 ) foams for EOR applications, foam instability challenge and ways to solve it, and foam behavior in porous media. It also reveals the gaps in knowledge which could be helpful for future studies.
机译：为了克服CO _（2）驱油过程中所涉及的挑战，已经提出了CO_（2）-泡沫注入作为增强油采收和碳捕获和储存的潜在技术。通过大量的实验和理论研究以及少量的试点和现场案例，已经确定了CO_（2）发泡对提高采油率的积极影响。但是，仍然没有足够的数据来解决操作和概念问题。这可能是未在现场应用中广泛使用CO_（2）泡沫的主要原因。 CO_（2）-泡沫注入，在储层条件下泡沫的不稳定性和塌陷，流体流动行为以及寻找最佳发泡剂所涉及的机制是该过程的主要问题。本文介绍了有关CO _（2）泡沫在EOR应用中的性能，泡沫不稳定性挑战和解决方法以及多孔介质中泡沫行为的最新研究的文献综述。它还揭示了知识上的空白，这可能对将来的研究有所帮助。

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