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Prasad, Siddhant Kumar; Sangwai, Jitendra S.; Byun, Hun-Soo
Journal of CO2 utilization, June 2023, 2023-06-00, Letnik: 72Journal Article
Supercritical fluids find use in various areas in oil and gas production operations due to their unique properties. Supercritical CO2 (sc-CO2) with its reduced viscosity, increased diffusivity, and liquid like density, is attractive for enhanced hydrocarbon recovery, shale gas fracturing and drilling (especially in underbalanced condition). Apart from enhanced hydrocarbon recovery CO2 injection is also desirable due to associated CO2 storage through various trapping mechanisms. CO2-EOR/EGR and storage processes are affected by coupled geochemical, petrophysical and geomechanical alterations due interaction of sc-CO2 with reservoir rock/fluids Along with diffusion/dispersion of sc-CO2 in the fluid filled pore spaces. CO2-monitoring combined with lifecycle analysis can help to ensure safety and optimize the CO2-EOR/storage project, considering the environment. However, many technical, financial and policy challenges need to be overcome to realize the success of the CO2-EOR/storage project and achieve carbon neutrality. This review paper discusses such challenges, the current mitigation practice, gaps and future direction of research. This holistic review would help gain insights into the sc-CO2-EOR/storage mechanisms, selection criteria, various limitations, mitigation and optimizations while applying the method for unconventional reservoirs with heterogeneity and varying fluid properties. Display omitted •A review of sc-CO2 and other fluids for improved hydrocarbon production.•Thickeners reduce sc-CO2 fluid mobility, improving the sweep efficiency.•CO2-philic and phobic groups improve CO2 solubility and viscosity, respectively.•Reduced formation breakdown and increased fracture propagation with sc-CO2 fluid.•Higher CO2 adsorption for storage and enhanced erosion for drilling operations.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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