Research on enhanced oil recovery: past, present and future

Taber, J.J.

doi:10.1351/pac198052051323

Cited by 83 publications

(48 citation statements)

References 85 publications

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“…It is important to note that capillary trapping has been shown to be a dominant mechanism for oil trapping in depleted oil fields. It has been found that, even following secondary recovery processes, more than 50% of the original oil remains trapped as a discontinuous phase [95,96].…”

Section: Introductionmentioning

confidence: 99%

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Bryan¹,

Dewers²,

Heath³

et al. 2013

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In the supercritical CO 2 -water-mineral systems relevant to subsurface CO 2 sequestration, interfacial processes at the supercritical fluid-mineral interface will strongly affect core-and reservoir-scale hydrologic properties. Experimental and theoretical studies have shown that water films will form on mineral surfaces in supercritical CO 2 , but will be thinner than those that form in vadose zone environments at any given matric potential. The theoretical model presented here allows assessment of water saturation as a function of matric potential, a critical step for evaluating relative permeabilities the CO 2 sequestration environment. The experimental water adsorption studies, using Quartz Crystal Microbalance and Fourier Transform Infrared Spectroscopy methods, confirm the major conclusions of the adsorption/condensation model. Additional data provided by the FTIR study is that CO 2 intercalation into clays, if it occurs, does not involve carbonate or bicarbonate formation, or significant restriction of CO 2 mobility.We have shown that the water film that forms in supercritical CO 2 is reactive with common rock-forming minerals, including albite, orthoclase, labradorite, and muscovite. The experimental data indicate that reactivity is a function of water film thickness; at an activity of water of 0.9, the greatest extent of reaction in scCO 2 occurred in areas (step edges, surface pits) where capillary condensation thickened the water films. This suggests that dissolution/precipitation reactions may occur preferentially in small pores and pore throats, where it may have a disproportionately large effect on rock hydrologic properties.Finally, a theoretical model is presented here that describes the formation and movement of CO 2 ganglia in porous media, allowing assessment of the effect of pore size and structural heterogeneity on capillary trapping efficiency. The model results also suggest possible engineering approaches for optimizing trapping capacity and for monitoring ganglion formation in the subsurface. 6 ACKNOWLEDGMENTS

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Section: Introductionmentioning

confidence: 99%

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Bryan¹,

Dewers²,

Heath³

et al. 2013

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“…The residual saturation of a displacement phase is related with viscous forces, surface forces (interfacial tension) and capillary number [10]. The capillary number [7], N cn , is defined as a dimensionless ratio of viscous to local capillary forces(equation 5).…”

Section: Theoretical Discussion For Eormentioning

confidence: 99%

Alkaline/Surfactant/Polymer (ASP) Flooding

Nuraje

Gussenov

Tatykhanova

et al. 2015

IJBCh

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This is a review article on the subject of combining tertiary oil recovery methods like alkaline, surfactant and polymer flooding in order to achieve the synergetic effect out of the different impacts which are caused by these chemicals, affect oil and water filtration in the reservoir and increase oil recovery. In the article the main theoretical concepts of EOR (enhanced oil recovery) are summarized, mechanism of alkaline, surfactant and polymer flooding technologies are explained referring to the research works which had strong contribution to the development of the tertiary oil recovery methods. Formulation of alkaline/surfactant/polymer (ASP) chemical formula for EOR is discussed as well. Importance of numerical simulation and core flood laboratory experiments for the successful implementation of ASP technologies explained in the paper. Finally several examples of ASP flooding applications throughout the world projects are presented.

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“…However, several definitions are possible as long as they are relevant and consistent [11][12][13][14]; in SARIP CH , we chose N c = (R m μ w u w + μ o u o )/σ ow where R m is the polymer mobility reduction.…”

Section: Saripmentioning

confidence: 99%