Visualização Tridimensional Do Deslocamento De Óleo Por Suspensões De Microcápsulas Flexíveis Em Meios Porosos

VIMIEIRO, JOSE RONALDO

doi:10.17771/pucrio.acad.31834

Cited by 2 publications

(21 citation statements)

References 75 publications

(86 reference statements)

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“…Figure 3.7 3D view from the device holder and its measures. Figure 3.8 Difference between previous porous devices used by Vimieiro [13] (a) from the one developed on this work (b). Figure 3.9 Device holder placed on the microscope stage.…”

Section: Palavras-chavementioning

confidence: 96%

“…Each color represent a different polymer to cross-link ratio. Figure 2.21 Adapted from Vimieiro [13]. Result of the gradual increase in water injection observed on one 2D slice of the porous core.…”

Section: Palavras-chavementioning

confidence: 99%

“…Aqueous phase is dyed light blue and the oil phase is dyed in yellow. Figure 3.12 Method used by Vimieiro [13] to match the solids and fluids refractive indices. Figure 3.…”

Section: Palavras-chavementioning

confidence: 99%

“…Figure 3. 13 Diagram of how the method of Yue et al [21] can determine the refractive index of the microsphere (a). Microsphere image obtained by phase contrast microscope (b).…”

Section: Palavras-chavementioning

confidence: 99%

“…The author managed to measure fluid velocities and volumes occupied by each phase. The work from Vimieiro Júnior [13] followed Datta's procedures, introducing a third phase, that consisted of microcapsules with a polymeric (PDMS) shell composition, hoping to investigate a possible oil recovery enhancement. A small recovery increase was obtained, but the results seem to be far from expected, probably because the PDMS capsules had a stiffness too high to penetrate the porous media.…”

Section: Motivationmentioning

confidence: 99%

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3d Visualization of Oil Displacement by a Suspension of Microcapsules

RIBEIRO¹

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Section: Palavras-chavementioning

confidence: 96%

Section: Palavras-chavementioning

confidence: 99%

“…Aqueous phase is dyed light blue and the oil phase is dyed in yellow. Figure 3.12 Method used by Vimieiro [13] to match the solids and fluids refractive indices. Figure 3.…”

Section: Palavras-chavementioning

confidence: 99%

“…Figure 3. 13 Diagram of how the method of Yue et al [21] can determine the refractive index of the microsphere (a). Microsphere image obtained by phase contrast microscope (b).…”

Section: Palavras-chavementioning

confidence: 99%

Section: Motivationmentioning

confidence: 99%

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3d Visualization of Oil Displacement by a Suspension of Microcapsules

RIBEIRO¹

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3D Visualization of Oil Displacement in Porous Media by the Injection of Microcapsule Suspension using Confocal Microscopy

Ribeiro

2020

Day 2 Tue, October 27, 2020

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In the past decades, oil companies have shown growing interest in increasing oil recovery efficiency. Commonly, after primary and secondary recovery phases, a large amount of oil remains trapped inside the reservoir. Thus, the number of studies focused on enhanced oil recovery is growing, aiming to increase the recovery factor. The focus of this work is to study the fundamentals of oil displacement in porous media using a confocal laser scanning microscope, which enables 3D visualization of dynamic phenomena with a good spacial and time resolution. The analysis was on oil displacement that results from the use of a suspension of gellan gum microcapsules in water injected after water injection. These microcapsules moving along with the water, blocked some of the preferential paths and forced the water to displace trapped oil ganglia. The result achieved was a collection of 3D images from artificial porous media, in which it was possible to distinguish the distribution of phases (microcapsules, oil, and aqueous phases) inside the porous media, before and after the microcapsules injection. These images showed that indeed the gellan gum microcapsules blocked preferential water paths and that, after the blockage, some oil ganglia were displaced from their original positions. This work applied modern techniques of microscopy to investigate the concept behind enhanced oil recovery using microcapsules.

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Visualização Tridimensional Do Deslocamento De Óleo Por Suspensões De Microcápsulas Flexíveis Em Meios Porosos

Cited by 2 publications

References 75 publications

3d Visualization of Oil Displacement by a Suspension of Microcapsules

3d Visualization of Oil Displacement by a Suspension of Microcapsules

3D Visualization of Oil Displacement in Porous Media by the Injection of Microcapsule Suspension using Confocal Microscopy

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