Microvisual investigation of polymer retention on the homogeneous pore network of a micromodel

Yun, Wonjin; Kovscek, Anthony R.

doi:10.1016/j.petrol.2015.02.004

Cited by 37 publications

(19 citation statements)

References 25 publications

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“…Multiphase flow in porous media is important in a number of environmental and industrial subsurface applications such as the sequestration and storage of CO 2 in geological formations [1], enhanced oil recovery [2], soil remediation [3], and energy storage technologies. Interest also extends to manufactured porous materials such as nuclear safety devices [4], and distillation columns [5].…”

Section: Introductionmentioning

confidence: 99%

Pore-scale visualization and characterization of viscous dissipation in porous media

Roman

Kovscek

2020

Journal of Colloid and Interface Science

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Introductionmentioning

confidence: 99%

Pore-scale visualization and characterization of viscous dissipation in porous media

Roman

Kovscek

2020

Journal of Colloid and Interface Science

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“…Microscopic visual models have been applied as new multi-functional simulation physics models to the field of petroleum engineering, and have been generally accepted by many scholars [21]. Thess model can not only fundamentally investigate the mechanism or effect of various enhanced oil recovery (EOR), including water flooding [22], gels for conformance control [23], steam flooding [24], foam flooding [25], microbial EOR [26], carbonated water flooding [27], solution gas driving [28], miscible displacement [29], and spontaneous imbibition [30], but also intuitively describe the essential aspects of multiple fluid or rock-fluid interactions in porous media, including asphaltene deposition [31], capillary force [32], polymer retention [33], wettability [34], interfacial tension [35], and multiple-contact miscibility [36]. However, there is no visualization study on the occurrence characteristics of formation water in porous media, especially for the multi-type media of fracture-cavity carbonate gas reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Visual Investigation of the Occurrence Characteristics of Multi-Type Formation Water in a Fracture–Cavity Carbonate Gas Reservoir

et al. 2018

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It is difficult to investigate the formation process and occurrence states of water in multi-type reservoirs, due to the strong heterogeneity and complex microstructure of the fracture-cavity carbonate gas reservoirs. To date, there is no systematic study on the occurrence characteristics of multi-type formation water, especially through visual observation experiments. In this paper, a new creation method for visual micromodels based on CT scan images and microelectronic photolithography techniques was described. Subsequently, a gas-drive-water visual experiment was conducted to intuitively study the formation mechanism and the occurrence states of formation water. Then, the ImageJ gray analysis method was utilized to quantitatively investigate the gas-water saturation and the proportion of residual water film. Finally, the occurrence characteristics of formation water and its effects on gas seepage flow were comprehensively analyzed. Visual experimental results showed that: the migration processes of natural gas in different types of reservoirs are different; the water in multiple media consists of native movable water and residual water, and residual water is composed of secondary movable water and irreducible water; the residual water mainly occurs in different locations of different reservoirs with the forms of "water film", "water mass", "water column" and "water droplets"; the main influencing factors are capillary force, surface tension, displacement pressure and channel connectivity. Quantitative results reflect that the saturation of movable water and residual water are the parameters related directly to reservoir physical properties, pore structure and displacement pressure-the smaller the size of flow channel, the larger the space occupied by water film; the thickness proportion of water film is increasing exponentially with the channel size; the thickness proportion of water film decreases as the increase of displacement pressure; the thickness proportion of water film is essentially constant when the displacement pressure increases to a certain extent. The conducted visual investigation not only improves our intuitive understanding of the occurrence characteristics of formation water, but also provides a theoretical basis for the efficient development of fracture-cavity gas reservoirs.

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“…A good understanding of the physics that govern multiphase flow in porous media is of great importance for a wide range of applications, including enhanced oil recovery [1], geological CO 2 sequestration [2,3], fuel cells [4], nuclear safety devices [5] and separation processes in chemical engineering [6]. Immiscible two-phase displacements depend on the physical and chemical properties of both the injected and displaced fluids, the hydrodynamic forces, and the physical and chemical properties of the porous medium [7].…”

Section: Introductionmentioning

confidence: 99%

Measurements and simulation of liquid films during drainage displacements and snap-off in constricted capillary tubes

Roman

Abu-Al-Saud

Tokunaga

et al. 2017

Journal of Colloid and Interface Science

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When a wetting liquid is displaced by air in a capillary tube, a wetting film develops between the tube wall and the air that is responsible for the snap-off mechanism of the gas phase. By dissolving a dye in the wetting phase it is possible to relate a measure of the absorbance in the capillary to the thickness of liquid films. These data could be used to compare with cutting edge numerical simulations of the dynamics of snap-off for which experimental and numerical data are lacking. Drainage experiments in constricted capillary tubes were performed where a dyed wetting liquid is displaced by air for varying flow rates. We developed an optical method to measure liquid film thicknesses that range from 3 to 1000μm. The optical measures are validated by comparison with both theory and direct numerical simulations. In a constricted capillary tube we observed, both experimentally and numerically, a phenomenon of snap-off coalescence events in the vicinity of the constriction that bring new insights into our understanding and modeling of two-phase flows. In addition, the good agreement between experiments and numerical simulations gives confidence to use the numerical method for more complex geometries in the future.

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Microvisual investigation of polymer retention on the homogeneous pore network of a micromodel

Cited by 37 publications

References 25 publications

Pore-scale visualization and characterization of viscous dissipation in porous media

Pore-scale visualization and characterization of viscous dissipation in porous media

Visual Investigation of the Occurrence Characteristics of Multi-Type Formation Water in a Fracture–Cavity Carbonate Gas Reservoir

Measurements and simulation of liquid films during drainage displacements and snap-off in constricted capillary tubes

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