Study on In Situ Carbon Dioxide-Generation Flooding

Abstract:

Aiming at the source and corrosiveness of carbon dioxide, the in-situ carbon dioxide generation technology to enhance oil recovery was proposed。This paper presents the in-situ carbon dioxide generation technology mechanism, the expansion, viscosity reduction; oil-displacement efficiency and foamy oil of this technology were experimentally evaluated by using microscopic models and physical models. The experimental results indicated that the in-situ carbon dioxide generation technology could be used to produce enough carbon dioxide and get good efficiencies of oil expansion, reduction of viscosity and enhancement of oil displacement. Under the conditions of 2010mPa•s in oil viscosity, 60°C and 10MPa, the volume of oil could be expanded by25%, and the viscosity of oil can reduced to 52.7% , and the CO2 can displacement，restraining viscous fingering and changing liquid flow direction and carrying the residual oil.

• Periodical: Advanced Materials Research (Volume 502)
• Pages: 179-183
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.502.179
• Online since: April 2012
• Authors: Hong Jing Zhang, Shuang Bo Dong, Zhe Kui Zheng
• Keywords: Expansion, Foamy Oil, In Situ Carbon Dioxide-Generatio, Mechanism, Viscosity Reduction

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