NDLI: Effect of Gas Diffusion on Mobility of Foam for Enhanced Oil Recovery

Content Provider	Springer Nature Link
Author	nnekes, Lars E. Cox, Simon J. Rossen, William R.
Copyright Year	2014
Abstract	Diffusion of gas across liquid films between bubbles is thought to increase average bubble size in foam in porous media. It is cited as one reason why $$\hbox {CO}_{2}$$ foams for enhanced oil recovery (EOR) are less resistant to flow than $$\hbox {N}_{2}$$ foams and why mixing $$\hbox {N}_{2}$$ with steam increases the resistance of steam foam. In porous media, diffusion can rapidly destroy bubbles smaller than a pore, but in EOR foam bubbles are thought to be larger than pores. This study examines the effect of inter-bubble gas diffusion on flowing bubbles in a periodically constricted tube and, in particular, its effect on the bubble-size distribution and capillary resistance to flow. The study is based on the solution for bubble shapes, curvatures, and pressure differences between bubbles from previous studies of bubble movement through periodically constricted tubes. It uses these results to estimate the diffusion rate between bubbles. Bubbles somewhat smaller than a pore can indeed disappear by diffusion as the bubbles move. For bubbles larger than a pore, as expected in EOR, diffusion does not affect bubble size. Instead, diffusion actually increases capillary resistance to flow, because lamellae spend more time in positions where lamella curvature resists forward movement. When fit to pressures and diffusion and convection rates representative of field application of foams, diffusion is not expected to alter the bubble-size distribution in a foam. Instead it modestly increases the resistance to flow. The reason for the apparent weakness of $$\hbox {CO}_{2}$$ foam therefore evidently lies in factors other than $$\hbox {CO}_{2}$$ ’s large diffusion rate through foam.
Starting Page	669
Ending Page	689
Page Count	21
File Format	PDF
ISSN	01693913
Journal	Transport in Porous Media
Volume Number	106
Issue Number	3
e-ISSN	15731634
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-12-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Foam Diffusion Enhanced oil recovery Foam stability $$\hbox {CO}_{2}$$ foam Steam foam Geotechnical Engineering & Applied Earth Sciences Industrial Chemistry/Chemical Engineering Hydrology/Water Resources Civil Engineering Hydrogeology Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Catalysis

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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