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A Storage-Driven CO₂ EOR for a Net-Zero Emission Target Article

Yueliang Liu, Zhenhua Rui

Engineering 2022, Volume 18, Issue 11, Pages 79-87 doi: 10.1016/j.eng.2022.02.010

Abstract: This work proposes an advanced CO₂ enhanced oil recovery (EOR) method—namely, storage-drivenHere, dimethyl ether (DME) is employed as an efficient agent in assisting conventional CO₂ EORStorage-driven CO₂ EOR is superior to conventional CO₂ EOR in improving sweepingthan conventional CO₂ EOR.By altering developing scenarios, such as water alternating storage-driven CO₂ EOR, more CO

Keywords： CO₂ EOR Net CO₂ emissions Dimethyl ether Storage-driven CO₂ EOR CO

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A review on the application of nanofluids in enhanced oil recovery

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8, Pages 1165-1197 doi: 10.1007/s11705-021-2120-4

Abstract: Enhanced oil recovery (EOR) has been widely used to recover residual oil after the primary or secondaryIn recent years, nanofluids have been widely used in EOR processes.Moreover, several studies have focused on the role of nanofluids in the nanofluid EOR (N-EOR) processThe mechanism of N-EOR is based on the nanoparticle adsorption effect.Finally, potential mechanisms and future directions of N-EOR are proposed.

Keywords： nanofluid EOR mechanism nanoparticle adsorption interface property internal property

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Frontier science and challenges on offshore carbon storage

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1680-6

Abstract:

● The main direct seal up carbon options and challenges are reviewed.

Keywords： storage Direct CO₂ injection CO₂-CH₄ replacement CO₂-EOR

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Pore-scale simulation of water/oil displacement in a water-wet channel

Jin Zhao, Guice Yao, Dongsheng Wen

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4, Pages 803-814 doi: 10.1007/s11705-019-1835-y

Abstract: Water/oil flow characteristics in a water-wet capillary were simulated at the pore scale to increase our understanding on immiscible flow and enhanced oil recovery. Volume of fluid method was used to capture the interface between oil and water and a pore-throat connecting structure was established to investigate the effects of viscosity, interfacial tension (IFT) and capillary number ( ). The results show that during a water displacement process, an initial continuous oil phase can be snapped off in the water-wet pore due to the capillary effect. By altering the viscosity of the displacing fluid and the IFT between the wetting and non-wetting phases, the snapped-off phenomenon can be eliminated or reduced during the displacement. A stable displacement can be obtained under high number conditions. Different displacement effects can be obtained at the same number due to its significant influence on the flow state, i.e., snapped-off flow, transient flow and stable flow, and ultralow IFT alone would not ensure a very high recovery rate due to the fingering flow occurrence. A flow chart relating flow states and the corresponding oil recovery factor is established.

Keywords： VOF pore scale immiscible displacement EOR snap-off Ca