Abstract
Carbon dioxide (CO2) miscible injection is one of the most efficient manners in enhanced oil recovery (EOR). In addition to improving oil recovery, this method can diminish CO2 emissions into the atmosphere. Supercritical CO2 is employed in miscible CO2-EOR for displacing oil from a depleted reservoir. The injection of CO2 improves the oil recovery through mechanisms such as dissolving, swelling, and reducing the oil viscosity. In this chapter, for a miscible CO2-EOR operation, the minimum miscibility pressure, fluid reservoir thermodynamic, fluid reservoir conditions, first-contact miscibility, and multiple-contact miscibility mechanisms are introduced. The application of CO2 injection in some shale oil reservoirs and related field experiences are also reviewed.
| Original language | English |
|---|---|
| Title of host publication | Gas Injection Methods |
| Subtitle of host publication | A volume in Enhanced Oil Recovery Series |
| Publisher | Elsevier B.V. |
| Pages | 133-170 |
| Number of pages | 38 |
| ISBN (Electronic) | 9780128223024 |
| ISBN (Print) | 9780128223031 |
| DOIs | |
| Publication status | Published - Jan 1 2022 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
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SDG 9 Industry, Innovation, and Infrastructure
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SDG 13 Climate Action
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SDG 17 Partnerships for the Goals
Keywords
- CO miscible injection
- condensing gas mechanism
- First-contact miscibility
- minimum miscibility injection
- multiple-contact miscibility
- vaporizing gas mechanism
ASJC Scopus subject areas
- General Energy
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