An experimental study of in-situ foam rheology: Effect of stabilizing and destabilizing agents

Yu, Ying; Soukup, Zachary A.; Saraji, Soheil

doi:10.1016/j.colsurfa.2019.06.014

Cited by 26 publications

(19 citation statements)

References 43 publications

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“…As discussed in the literature, the optimal foam quality (transition foam quality) relates to the permeability of the core, surfactant type and concentration, and the total flow rate . In our previous work, foam stabilized by sodium dodecylbenzene sulfonate (SDBS) at 0.5 wt % was flooded in Berea sandstone at 2 cc/min for foam generation . The pressure gradient difference between the foam qualities of 70 and 90% was comparable and not as significant as in the current study, where foam stabilized by 0.5 wt % CAPB was flooded in Berea sandstone at 1 cc/min.…”

Section: Results and Discussionsupporting

confidence: 61%

“…This results in more in situ lamellae per unit flow rate compared to those at lower rates in the fracture system and the overall shear-thickening behavior. In addition, the foam texture is finer at a higher shear rate to a certain extent, where finer bubbles are expected to enter the matrix easily. Therefore, pressure drop surges since the foam will not just bypass the matrix but enter and evolve in the matrix.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Before foam and crude oil co-injection, scCO 2 was co-injected with CAPB solution at 2 cc/min and foam qualities of 10, 30, 50, 70, and 90%, as discussed in the previous section. Our previous work on nitrogen–SDBS foam in the presence of Ekofisk crude oil showed the destructive impact of oil on foam performance, resulting in a reduction in the apparent foam viscosity . Following the same logic, we selected the 2 cc/min injection rate for both rocks for foam and oil co-injection experiments.…”

Section: Results and Discussionmentioning

confidence: 99%

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Supercritical CO₂ Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness

Saraji

2021

Energy Fuels

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Foam flooding has been used for gas conformance control during enhanced oil recovery (EOR) in heterogeneous reservoirs. The application of foam flooding in naturally or hydraulically fractured reservoirs has recently been gaining attention. There are, however, limited studies on supercritical CO 2 (scCO 2 ) foam behavior in the fractured system. Specifically, the impact of fracture properties such as aperture size, surface roughness, and fracture orientation in natural rocks are not well studied. In this work, we investigated the behavior of scCO 2 foam stabilized by a viscoelastic surfactant in fractured systems. The apparent viscosity of foam in fractured and nonfractured cores was compared. Furthermore, the effects of fracture surface roughness and crude oil on foam behavior were determined. We found that the fracture surface roughness positively affects the apparent viscosity of foam in the absence and presence of crude oil. Also, the formation of the complex structure of the water-oil-CO 2 system during oil−foam co-injection may serve a major role in causing a significant apparent viscosity.

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Section: Results and Discussionsupporting

confidence: 61%

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

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Supercritical CO₂ Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness

Saraji

2021

Energy Fuels

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“…If dynamic processing is involved-for example, injection molding or the extrusion process-the fluidity of the gas-laden melt will also be affected. Therefore, as a useful way to evaluate the processability of the polymers employed, [14][15][16][17][18][19][20] the rheological measurement of the gas-laden melt is crucial to obtaining the corresponding processing information in the foaming operation. Corresponding to the different stages of the foaming process, different rheological measurements can be performed during the stages of gas diffusion, single-phase gas-melt flow, and gas separating/escaping from the melt.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the gas-laden ability of polymer melt under atmospheric conditions using a modified torque rheometer

Mei

Zhou

Sun

et al. 2021

Journal of Cellular Plastics

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To investigate the effects of incorporating gas and the associated influencing factors on polymer melt, a method of evaluating the gas-laden ability using modified rheometric measurements was proposed. In this study, common and widely used thermoplastic materials—polypropylene (PP) and high-density polyethylene (HDPE), and their blends with different weight ratios—were selected, and the rheological properties of neat melt and gas-laden melts were tested using a modified torque rheometer. The foamed samples were also produced using a regular injection-molding machine, and the foamed morphology was examined by scanning electron microscope (SEM). The comparison of rheological curves of neat melt and gas-laden melt indicated that the incorporation of gas influenced the rheological properties of the gas-laden polymer melts as evidenced by a decrease of zero-rotational torque and an increase in the melt flow index. The results also suggested that the gas-laden ability of polymer melt could be evaluated quantitatively by the decay (due to desorption) of gas using the modified rheological measurement method. This study also demonstrated that the gas-laden ability can be used to predict the foaming behavior of polymer melts.

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“…In addition to nanoparticles, polymers have also been used to improve the foam viscoelasticity and to optimize the stability. Yu et al 38 found that polyacrylamide-based polymers produced foams with a higher viscosity and better rheological performances, which improved the resistance of foam to hydrocarbons. Alvarez et al 34 observed the adsorption of silica particles on Ndimethylaminoethyl polymers at the air−water and xylene− water interfaces and found that the interfacial tension was significantly lowered and the system strength was greatly enhanced.…”

Section: ■ Introductionmentioning

confidence: 99%

Experimental Investigation on Microscopic Force Measurement of Foam and Heavy Oil

et al. 2020

Langmuir

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This paper combined experiments with a theoretical model to simulate the behavior between a foam and heavy oil during contact pressing, separation, and adsorption. We discuss the changes in the elasticity and adsorption forces during the pressing and adsorption of the two fluids. The influence of the changes in temperature and pressure, the concentration of the sodium dodecyl sulfate surfactant, the heavy oil viscosity, and the addition of partially hydrolyzed polyacrylamide and hydrophobic SiO 2 nanoparticles was studied. The results showed that the overall increase in the elasticity and adsorption forces between the foam at 1 wt % surfactant and heavy oil was more than 2 times greater than those of the foam with 0.2 wt % surfactant. The increase in viscosity of heavy oil also increased various forces. The overall improvement in the adsorption force between fluids caused by nanoparticles during separation and adsorption stages reached 1.8 times, which was better than that obtained using the polymer (1.65 times). However, the polymer showed a 1.4 times higher elastic force during the fluid pressing stage than the nanoparticles and about 4 times higher than the control foam, and the increase in temperature greatly weakened the effect of the force, while the change in pressure did not cause much impact. An analytical model was built based on fluid mechanics, and the calculation results were consistent with the experimental data with an error of about 5−12%, suggesting that this model provides a good reference value.

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An experimental study of in-situ foam rheology: Effect of stabilizing and destabilizing agents

Cited by 26 publications

References 43 publications

Supercritical CO₂ Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness

Supercritical CO₂ Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness

Evaluating the gas-laden ability of polymer melt under atmospheric conditions using a modified torque rheometer

Experimental Investigation on Microscopic Force Measurement of Foam and Heavy Oil

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An experimental study of in-situ foam rheology: Effect of stabilizing and destabilizing agents

Cited by 26 publications

References 43 publications

Supercritical CO2 Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness

Supercritical CO2 Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness

Evaluating the gas-laden ability of polymer melt under atmospheric conditions using a modified torque rheometer

Experimental Investigation on Microscopic Force Measurement of Foam and Heavy Oil

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Product

Resources

About

Supercritical CO₂ Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness

Supercritical CO₂ Foam Stabilized by a Viscoelastic Surfactant in Fractured Porous Media: The Effect of Fracture Surface Roughness