Enhancing Carbon Dioxide and Water Flooding Sweep Efficiency using High Strength Crosslinked Polymer Gel


Carbon dioxide flooding is one of the most applied enhanced oil recovery techniques worldwide. Since it can increase oil recovery significantly. The oil recovery potential that can be acquired from carbon dioxide flooding can be extremely diminished due to reservoir heterogeneity. This research undergoes an extensive lab evaluation of crosslinked micro-particle gel under carbon dioxide and water conditions to evaluate its ability to improve conformance, and hence sweep efficiency when performing a carbon dioxide and water, referred to as Water Alternating Gas, treatment. The research determines the impact of some factors on the gel performance, and quantifies this impact. The factors studied include the presence of residual oil, the change in gel concentration, and the injection flow rates of both the carbon dioxide and the water. Results show that the gel's performance is strongly impacted by all these factors. This research is one the first to evaluate particle gels under carbon dioxide and water conditions together, which makes its results extremely important for both carbon dioxide flooding, and Water Alternating Gas applications.

Meeting Name

80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition (2018: Jun. 11-14, Copenhagen, Denmark)


Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Carbon dioxide; Enhanced recovery; Floods; Mine flooding; Reservoirs (water); Water injection; Water treatment, Carbon dioxide flooding; Cross-linked polymers; Enhanced oil recovery; Gel concentration; Injection flow rate; Reservoir heterogeneity; Water alternating gas; Water conditions, Oil well flooding

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2018 Society of Petroleum Engineers (SPE), All rights reserved.

Publication Date

01 Jun 2018

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