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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 21, 2015
Accepted March 10, 2016

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Simulation-based optimization of gas condensate wells to mitigate the heavy hydrocarbon condensation through supercritical CO2 injection

Jinsuk Choi ByungIn Choi¹ Jiho Lee Kun Sang Lee^†

Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea ¹Computer Modelling Group Ltd., Building @12, Office 320, P. O. Box 500 446, Dubai International City, Dubai, UAE, United Arab Emirates

Korean Journal of Chemical Engineering, August 2016, 33(8), 2308-2318(11), 10.1007/s11814-016-0075-9

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Abstract

In gas-condensate reservoirs suffering from condensate banking, the supercritical CO2 injection process is regarded as one of the most effective technical remedies to reduce the liquid formation and achieve higher quality gas production. With proper well configuration and spacing designs, the injected CO2 can decrease the loss of heavy components effectively. The main goal of this study was to minimize the loss of heavy components during CO2 injection by implementing a proper well configuration. The results show that the integration of pressure maintenance and chemical reactions, including reduced viscosity and interfacial tension, improves the C7+ component recovery by 42.9, 49.4, and 49.3% for the base five-spot, inverted five-spot, and line drive cases, respectively. The total recovery is the highest for the line drive pattern with a recovery factor of 72.7%. The results also indicate that there is a critical length maximizing the effect of gas cycling.

Keywords

Gas-condensate Gas-relative Permeability Supercritical CO2 Injection Heavy Hydrocarbon Well Configuration