The Impacts of Geomechanics Coupling on CO₂-EOR
This chapter discusses numerical simulation methods of compositional models incorporated with LS-LR-DK (logarithmically spaced, locally refined, and dual permeability) models and local grid refinements of hydraulic fracture conditions to simulate the feasibility of CO2 injection in shale oil reservoirs. Different mechanisms for CO2 interactions with organic surfaces, shale brine, and shale oil were presented with different scenarios in numerical models. Molecular diffusion mechanisms, adsorption effects, and aqueous solubility effects were discussed in this chapter. In addition, linear elastic models and stress-dependent correlations were discussed in relation to geomechanic coupling effects on production and injection processes of CO2-EOR in shale oil reservoirs. Some of the results presented in this chapter were validated by matching the performance of some CO2 field pilot projects performed in the Bakken formation, which extends over portions of North Dakota and Montana.
D. Alfarge et al., "The Impacts of Geomechanics Coupling on CO₂-EOR," Developments in Petroleum Science, vol. 67, pp. 217-243, Elsevier B.V., Jan 2020.
The definitive version is available at https://doi.org/10.1016/B978-0-12-818343-4.00011-5
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
CO -EOR huff-n-puff 2; CO -EOR mechanisms in shale and tight oil reservoirs 2; EOR history matching; geomechanic coupling; reservoir simulation/field production data
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01 Jan 2020