Natural Gas-Based EOR vs. CO₂-EOR in Shale and Tight Oil Reservoirs
In this chapter, a comprehensive and critical review has been conducted to evaluate the feasibility of the miscible gas-based enhanced oil recovery (EOR) technique in unconventional liquid-rich reservoirs (ULRs). Reports and studies from three different approaches (lab, simulation, and pilot tests) were summarized and combined to provide in-depth insights and lessons learned from the application of miscible gas-based EOR in ULRs. First, the main problems in the lab and simulation approaches used to investigate the viability of different EOR methods have been diagnosed. Second, the EOR performance resulting from the injection of different miscible gases has been discussed extensively. Third, the physical and chemical reasoning behind the performance gap for the injected gases at the lab scale versus the field scale of ULRs has been diagnosed.
D. Alfarge et al., "Natural Gas-Based EOR vs. CO₂-EOR in Shale and Tight Oil Reservoirs," Developments in Petroleum Science, vol. 67, pp. 65 - 85, Elsevier B.V., Jan 2020.
The definitive version is available at https://doi.org/10.1016/B978-0-12-818343-4.00004-8
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
CO -EOR mechanisms in conventional reservoirs 2; CO -EOR mechanisms in shale and tight oil reservoirs 2; combination of reservoir simulation with field production data; EOR history matching; natural gas-based EOR
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01 Jan 2020