In order to reduce the anthropogenic greenhouse-gas emissions, CO2 geological storage has been proposed. Many applications for CO2 geological storage exist, such as injecting CO2 into depleted hydrocarbon reservoirs, enhanced coalbed methane recovery, and enhanced oil recovery (EOR) operations. CO2 injection has been extensively studied by many researchers and has resulted in large oil recoveries. Injecting CO2 alone experienced an early breakthrough problem, which is unfavorable in CO2 sequestration projects. CO2 must be kept inside the oil reservoir. This pushes researchers to combine water with CO2 flooding to improve the sweep efficiency. In this study, we investigated the effect of water salinity on CO2 flooding and on the water–rock interactions during WAG. The results of this study show that combining LS water with CO2 flooding prevents early breakthrough by improving CO2 sweep efficiency. The oil recovery was also high due to merging LS water with CO2 flooding. Controlling the injected water chemistry has a large influence on both oil recovery and CO2 solubility in crude oil. The highest effect of added chemicals can be ranked in an order of NaCl> CaCl2> Mixed NaCl, CaCl2, and MgCl2>MgCl2.
Skip Nav Destination
Close
CO2 Sequestration/EOR in Bartlesville Sandstone Reservoir Bearing Heavy Oil
Al-Saedi N. Hasan
;
Al-Saedi N. Hasan
Missouri University of Science and Technology / Missan Oil Company
Search for other works by this author on:
Flori E. Ralph
Flori E. Ralph
Missouri University of Science and Technology
Search for other works by this author on:
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, New York City, New York, June 2019.
Paper Number:
ARMA-2019-0514
Published:
June 23 2019
Citation
Hasan, Al-Saedi N., and Flori E. Ralph. "CO2 Sequestration/EOR in Bartlesville Sandstone Reservoir Bearing Heavy Oil." Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, New York City, New York, June 2019.
Download citation file:
Close
Sign in
Don't already have an account? Register
Personal Account
You could not be signed in. Please check your username and password and try again.
Pay-Per-View Access
$20.00
Advertisement
Advertisement
Suggested Reading
Advertisement