The role of injection fluid elasticity in microscopic displacement efficiency of residual non-wetting phase: An in-situ experimental investigation

Mohamed, Abdelhalim I. A.; Khishvand, Mahdi; Piri, Mohammad

doi:10.1016/j.fuel.2022.126180

Cited by 7 publications

(5 citation statements)

References 62 publications

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“…proposed in their study. A similar observation was also seen in earlier experiments of Qi et al 116 , and they also proposed a correlation between the residual oil saturation and the Deborah number, as provided by Mohamed et al 114 . Irfan et al 117 also conducted a recent experimental investigation on a threedimensional porous structure made of Berea sandstone and found an enhancement in the residual oil displacement from it by the use of HPAM polymer solution as the displacing fluid.…”

Section: Applications In Enhanced Oil Recovery (Eor) Processsupporting

confidence: 86%

“…This further establishes the role of elastic instability and elastic turbulence phenomena in displacing the trapped oil ganglia in a porous media. A very recent study by Mohamed et al 114 also proved it by examining the morphologies of oil globules in a three-dimensional porous structure with the help of an in-situ high-resolution microcomputed tomography (µ-CT) technique. The snapshots of oil globules inside the three-dimensional micro-pore structure are presented in Figure 22 both for water and polymer solution flooding.…”

Section: Applications In Enhanced Oil Recovery (Eor) Processmentioning

confidence: 96%

See 1 more Smart Citation

Applications of elastic instability and elastic turbulence: Review, limitations, and future directions

Sasmal¹

2023

Preprint

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Section: Applications In Enhanced Oil Recovery (Eor) Processsupporting

confidence: 86%

Section: Applications In Enhanced Oil Recovery (Eor) Processmentioning

confidence: 96%

Applications of elastic instability and elastic turbulence: Review, limitations, and future directions

Sasmal¹

2023

Preprint

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“…The core holder and fluid lines were completely covered with heating tapes and insulation materials, and all of the Quizix pumps and pressurized fluid containers were located inside a convection oven maintained at a constant temperature. Further details of the experimental setup can be found elsewhere …”

Section: Materials and Methodsmentioning

confidence: 99%

“…Further details of the experimental setup can be found elsewhere. 27 The bulk rheological properties of the VES solutions, e.g., shear response and viscoelasticity, were characterized using an Anton Paar MCR 502 rotational rheometer outfitted with both parallel plate and high-pressure double-gap geometries. The rheometer was equipped with an air-bearing-supported-synchronous motor with a torque ranging between 0.01 and 230 μN/m −1 and had a maximum working temperature of 400 °C.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Synergistic Effects of Aqueous Phase Viscoelasticity and Reduced Interfacial Tension on Nonwetting Phase Displacement Efficiency: An In Situ Experimental Investigation

Khishvand

Piri

2023

Langmuir

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This study uses in situ experimental investigation techniques to probe the synergistic effects of aqueous phase viscoelasticity and reduced interfacial tension on nonwetting phase displacement efficiency in natural porous media. Specifically, it examines the efficacy of viscoelastic surfactant (VES) solutions in enhancing oil recovery and investigates the pore-scale displacement mechanisms and VES−oil interactions. To this end, we first performed an extensive rheological characterization to select two VES solutions from multiple CTAB/NaNO 3 (CTN) and Cocobetaine/SDS/ NaCl (CSN) mixtures. The selected aqueous solutions were then used in unsteady-state imbibition experiments conducted on miniature, water-wet Prairie Shell carbonate core samples. The experiments were performed utilizing a high-pressure, high-temperature two-phase core-flooding apparatus integrated with a high-resolution X-ray imaging system to acquire pore-scale fluid occupancy maps during the displacements. The results indicate that the injection of the selected CSN and CTN solutions into the carbonate samples under capillary-dominated flow regimes boosts the oil recovery by 12 and 2%, respectively, compared to those of the base waterflood. The VES solutions lowered the oil−water interfacial tension and exerted significant shear forces at the entrance of pores. The shear forces could exceed the threshold surface free energy required to deform oil globules, and consequently, large oil clusters were fragmented into smaller blobs and eventually produced from the pore space. The higher oil recovery by CSN flooding was attributed to its stronger viscoelastic properties. The VES injection under the viscous-dominated flow regime intensified the frequency of oil globule fragmentation. As a result, residual oil saturation values were sharply reduced in the rock samples from 44 to 55% during the capillary-dominated flows to approximately 8%. The above-mentioned observations were also verified using morphological analysis of residual oil clusters. The impacts of VES flooding on the pore-scale oil configuration and the fragmentation of large oil clusters were particularly evident at higher VES flow rates.

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“…Nc is mainly controlled by the flow rate and viscosity of the displacement fluid, as well as the interfacial tension between the displacement fluid and crude oil. The polymer is generally added to the oil field to achieve the bulk viscosity of the continuous phase and enhance oil recovery [ 21 , 22 ]. The commonly used oil displacement polymers are mainly divided into two categories: partially hydrolyzed polyacrylamide (HPAM) and hydrophobically modified polyacrylamide (HMPAM) [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

The Interfacial Dilational Rheology Properties of Betaine Solutions: Effect of Anionic Surfactant and Polymer

Cui

Cao

et al. 2023

Molecules

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Interfacial dilational rheology is one of the important means to explore the interfacial properties of adsorption films. In this paper, the interfacial rheological properties of the mixed system of sulfobetaine ASB with a linear alkyl group and two anionic surfactants, petroleum sulfonate (PS) and alkyl polyoxyethylene carboxylate (AEC), were investigated by interfacial dilational rheology. The effect of the introduction of polymer hydrophobically modified polyacrylamide (HMPAM) on the interfacial properties of the mixed system was analyzed. In this experiment, the surfactant solution was used as the external phase and n-decane was used as the internal phase. A periodic sinusoidal disturbance of 0.1 Hz was applied to the n-decane droplets, and the changes of parameters such as droplet interfacial tension and interfacial area were monitored in real time with the help of a computer. The results show that the betaine ASB molecule responds to the dilation and compression of the interface through the change of ion head orientation, while the feedback behavior of petroleum sulfonate PS and AEC molecules embedded with oxygen vinyl groups in the molecule is diffusion and exchange between the interface and the bulk phase. Therefore, the interface film formed by ASB alone is higher, and the film formed by PS and AEC molecules alone is relatively lower. After adding two kinds of anionic surfactants to the betaine system, the ionic head of PS or AEC molecules will be attached to the positive center of the hydrophilic group of ASB molecules by electrostatic attraction and no longer adsorb and desorb with the interface deformation. The interfacial rheological properties of the compound system are still dominated by betaine, with higher dilational modulus and lower phase angle. When a small amount of HMPAM is added, or the content of hydrophobic monomer AMPS in the bulk phase is low, the intermolecular interaction at the interface is enhanced, the slow relaxation process is intensified, and the interfacial film strength is increased. As the content of AMPS further increases, hydrophobic blocks and surfactant molecules will form interfacial aggregates similar to mixed micelles at the oil-water interface, which will regulate the properties of the film by affecting the adsorption of surfactants at the interface. As long as the interfacial tension is the same, the properties of the interfacial film are the same. Based on the colloid interface science and the background of enhanced oil recovery, this study provides a reference for the field application of chemical flooding formulations.

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The role of injection fluid elasticity in microscopic displacement efficiency of residual non-wetting phase: An in-situ experimental investigation

Cited by 7 publications

References 62 publications

Applications of elastic instability and elastic turbulence: Review, limitations, and future directions

Applications of elastic instability and elastic turbulence: Review, limitations, and future directions

Synergistic Effects of Aqueous Phase Viscoelasticity and Reduced Interfacial Tension on Nonwetting Phase Displacement Efficiency: An In Situ Experimental Investigation

The Interfacial Dilational Rheology Properties of Betaine Solutions: Effect of Anionic Surfactant and Polymer

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