Methodology for estimating the prospective CO2 storage resource of residual oil zones at the national and regional scale

Sean Sanguinito; Harpreet Singh; Evgeniy M. Myshakin; Angela L. Goodman; Robert M. Dilmore; Timothy C. Grant; David Morgan; Grant Bromhal; Peter D. Warwick; Sean T. Brennan; Philip A. Freeman; C. Özgen Karacan; Charles Gorecki; Wesley Peck; Matthew Burton-Kelly; Neil Dotzenrod; Scott Frailey; Rajesh Pawar

doi:10.1016/j.ijggc.2020.103006

Methodology for estimating the prospective CO₂ storage resource of residual oil zones at the national and regional scale

International Journal of Greenhouse Gas Control

By: Sean Sanguinito, Harpreet Singh, Evgeniy M. Myshakin, Angela L. Goodman, Robert M. Dilmore, Timothy C. Grant, David Morgan, Grant Bromhal, Peter D. Warwick, Sean T. Brennan, Philip A. Freeman, C. Özgen Karacan, Charles Gorecki, Wesley Peck, Matthew Burton-Kelly, Neil Dotzenrod, Scott Frailey, and Rajesh Pawar

https://doi.org/10.1016/j.ijggc.2020.103006

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Abstract

Residual oil zones (ROZs) are increasingly gaining interest as potential reservoirs for carbon dioxide (CO₂) storage. Here, we present a national- and regional-scale methodology for estimating prospective CO₂ storage resources in residual oil zones. This methodology uses a volumetric equation that accounts for CO₂ storage as a free phase in pore space and as a dissolved phase in oil and does not assume any oil production associated with CO₂ storage. Reservoir modeling and the CO₂-SCREEN tool are used to demonstrate that CO₂ storage in residual oil zones will predominantly take place in the free phase (approximately 92–97%) with some storage as dissolution in oil (approximately 3–8 %). Based on this preliminary demonstration, the CO₂ storage efficiency for ROZs using this national- and regional-scale method ranges from 0.61 to 7.1 %. This range indicates ROZs have a similar efficiency potential for storing CO₂ as deep saline formations (0.51–5.4 %).

Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Methodology for estimating the prospective CO2 storage resource of residual oil zones at the national and regional scale
Series title	International Journal of Greenhouse Gas Control
DOI	10.1016/j.ijggc.2020.103006
Volume	96
Year Published	2020
Language	English
Publisher	Elsevier
Contributing office(s)	Eastern Energy Resources Science Center
Description	103006, 8 p.
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