NDLI: Wettability Alteration by Carbonated Brine Injection and Its Impact on Pore-Scale Multiphase Flow for Carbon Capture and Storage and Enhanced Oil Recovery in a Carbonate Reservoir

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Wettability Alteration by Carbonated Brine Injection and Its Impact on Pore-Scale Multiphase Flow for Carbon Capture and Storage and Enhanced Oil Recovery in a Carbonate Reservoir

Content Provider	MDPI
Author	Drexler, Santiago Hoerlle, Fernanda Godoy, William Boyd, Austin Couto, Paulo
Copyright Year	2020
Description	Carbon capture and storage is key for sustainable economic growth. CO2-enhanced oil recovery (EOR) methods are efficient practices to reduce emissions while increasing oil production. Although it has been successfully implemented in carbonate reservoirs, its effect on wettability and multiphase flow is still a matter of research. This work investigates the wettability alteration by carbonated water injection (CWI) on a coquina carbonate rock analogue of a Pre-salt reservoir, and its consequences in the flow of oil. The rock was characterized by routine petrophysical analysis and nuclear magnetic resonance. Moreover, micro-computed tomography was used to reconstruct the pore volume, capturing the dominant flow structure. Furthermore, wettability was assessed by contact angle measurement (before and after CWI) at reservoir conditions. Finally, pore-scale simulations were performed using the pore network modelling technique. The results showed that CWI altered the wettability of the carbonate rock from neutral to water-wet. In addition, the simulated relative permeability curves presented a shift in the crossover and imbibition endpoint values, indicating an increased flow capacity of oil after CWI. These results suggest that the wettability alteration mechanism contributes to enhancing the production of oil by CWI in this system.
Starting Page	6496
e-ISSN	20763417
DOI	10.3390/app10186496
Journal	Applied Sciences
Issue Number	18
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2020-09-17
Access Restriction	Open
Subject Keyword	Applied Sciences Petroleum Engineering Ccs Carbonated Water Injection Co2-eor Pore Network Modelling Relative Permeability
Content Type	Text
Resource Type	Article

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