Effects of gravity on flow behaviour of supercritical CO2 during enhanced gas recovery and sequestration

Abba, MK; Abbas, AJ; Saidu, B; Nasr, GG; Al-Otaibi, A

Abstract

A core flooding experiment was carried out to simulate an Enhanced Gas Recovery (EGR) process to inject supercritical Carbon Dioxide (SCO2) into a core sample saturated with methane (CH4). This was done to investigate the flow behaviour of the injected SCO2 at the flow conditions when the injection orientation was switched from horizontal to vertical during the CH4 displacement. From the results, it was found that gravity has significant effects on the flow behaviour of SCO2 at lower flowrates; more pronounced is the seemingly lower permeability in the horizontal orientation compared with the vertical orientation. So the choice of the injection pattern or direction during EGR by SCO2 injection for the purpose of additional recovery of CH4 and subsequent sequestration of the injected CO2 should be made in conjunction with the determination of optimum injection rate for efficient injectivity.

Citation

Abba, M., Abbas, A., Saidu, B., Nasr, G., & Al-Otaibi, A. (2018, November). Effects of gravity on flow behaviour of supercritical CO2 during enhanced gas recovery and sequestration. Poster presented at Fifth CO2 Geological Storage Workshop, Utrecht, The Netherlands

• Presentation Conference Type: Poster
• Conference Name: Fifth CO2 Geological Storage Workshop
• Conference Location: Utrecht, The Netherlands
• Start Date: Nov 21, 2018
• End Date: Nov 23, 2018
• Acceptance Date: Oct 21, 2018
• Deposit Date: Oct 1, 2018
• Publicly Available Date: Nov 21, 2018
• Publisher: European Association of Geoscientists and Engineers
• Publisher URL: http://www.earthdoc.org/publication/publicationdetails/?publication=94957
• Related Public URLs: https://events.eage.org/en/2018/fifth-co2-geological-storage-workshop
• Additional Information: Event Type : Workshop