A laboratory and numerical-simulation study of co-optimizing CO2 storage and CO2 enhanced oil recovery

Kamali, Fatemeh, Hussain, Furqan and Cinar, Yildiray (2015) A laboratory and numerical-simulation study of co-optimizing CO2 storage and CO2 enhanced oil recovery. SPE Journal, 20 06: 1227-1237. doi:10.2118/171520-PA


Author Kamali, Fatemeh
Hussain, Furqan
Cinar, Yildiray
Title A laboratory and numerical-simulation study of co-optimizing CO2 storage and CO2 enhanced oil recovery
Formatted title
A laboratory and numerical-simulation study of co-optimizing CO2 storage and CO2 enhanced oil recovery
Journal name SPE Journal   Check publisher's open access policy
ISSN 1086-055X
1930-0220
Publication date 2015-12-01
Sub-type Article (original research)
DOI 10.2118/171520-PA
Open Access Status Not yet assessed
Volume 20
Issue 06
Start page 1227
End page 1237
Total pages 11
Place of publication Richardson, TX, United States
Publisher Society of Petroleum Engineers
Language eng
Formatted abstract
This paper presents experimental observations that delineate co-optimization of carbon dioxide (CO2) enhanced oil recovery (EOR) and storage. Pure supercritical CO2 is injected into a homogeneous outcrop sandstone sample saturated with oil and immobile water under various miscibility conditions. A mixture of hexane and decane is used for the oil phase. Experiments are run at 70°C and three different pressures (1,300, 1,700, and 2,100 psi). Each pressure is determined by use of a pressure/volume/temperature simulator to create immiscible, near-miscible, and miscible displacements. Oil recovery, differential pressure, and compositions are recorded during experiments. A co-optimization function for CO2 storage and incremental oil is defined and calculated using the measured data for each experiment. A compositional reservoir simulator is then used to examine gravity effects on displacements and to derive relative permeabilities.

Experimental observations demonstrate that almost similar oil recovery is achieved during miscible and near-miscible displacements whereas approximately 18% less recovery is recorded in the immiscible displacement. More heavy component (decane) is recovered in the miscible and near-miscible displacements than in the immiscible displacement. The co-optimization function suggests that the near-miscible displacement yields the highest CO2-storage efficiency and displays the best performance for coupling CO2 EOR and storage. Numerical simulations show that, even on the laboratory scale, there are significant gravity effects in the near-miscible and miscible displacements. It is revealed that the near-miscible and miscible recoveries depend strongly on the endpoint effective CO2 permeability.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Faculty of Engineering, Architecture and Information Technology Publications
 
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Created: Mon, 03 Apr 2017, 14:50:08 EST by Fatemeh Kamali on behalf of UQ Energy Initiative