High temperature and oil tolerance of surfactant foam/polymer–surfactant foam

Sun, Lin; Pu, Wanfen; Jun, Xin; Wei, Peng; Wang, Bing; Li, Yibo; Yuan, Chengdong

doi:10.1039/c4ra17216g

Cited by 57 publications

(41 citation statements)

References 37 publications

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“…The chemical structures of the surfactants are provided in Table 1. A mixture of surfactants was adopted in most of our experiments [13]. Inorganic salts used for synthetic water preparation were anhydrous calcium chloride, magnesium chloride hexahydrate, and sodium chloride.…”

Section: Experimental Materialsmentioning

confidence: 99%

“…For oil 2, when the oil content exceeded 60%, a large number of oil droplets accumulated at the plateau borders and lamellas. This caused the surfactant molecules to transfer from the gas-water interface to the oilwater interface, weakening the foam film strength and the Marangoni effect [13], eventually leading to poor foam performance. For ''critical oil content'', oil 1 was much lower than oil 2.…”

Section: Effect Of Oilmentioning

confidence: 99%

“…On the other hand, unstable pseudo-emulsion film would lead to foam rupture. This theory has been widely accepted by many researchers [13][14][15].…”

Section: Introductionmentioning

confidence: 98%

“…Vikingstad et al reported that lower ionic strength would stabilize foam [8]. The addition of a polymer could enhance foam stability with oil present has also been verified [13,20]. Above all, there are still many controversies as to how these factors affect foam performance in the presence of oil.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of foam performance in the presence of crude oil

Pang

Wang

2017

J Surfact & Detergents

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The foam performance in the presence of oil plays an important role in foam application in enhancing oil recovery. The present study systematically investigated the effect of oil type, oil content, surfactant type, surfactant concentration, alkane chain length, salinity, and polymer concentration on foam performance in both the absence and presence of oil. The results showed that oil viscosity and oil density as well as oil component all contributed to foam performance in the presence of oil. Within a certain oil content, both light oil and heavy oil had a positive effect on foam, but heavy oil had a higher tendency to stabilize the foam. The order of foam performance by different surfactants was changed by the oil. It is noteworthy that heavy oil is detrimental to sodium dibutyl naphthalene sulfonate (BM) foam. Light oil can improve foam performance while heavy oil can harm foam in some specific cases. Lower salinity, longer alkane chain length, higher surfactant concentration and the presence of a polymer all benefited foam in the presence of crude oil.

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Section: Experimental Materialsmentioning

confidence: 99%

Section: Effect Of Oilmentioning

confidence: 99%

“…On the other hand, unstable pseudo-emulsion film would lead to foam rupture. This theory has been widely accepted by many researchers [13][14][15].…”

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of foam performance in the presence of crude oil

Pang

Wang

2017

J Surfact & Detergents

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“…However, silica nanofluid (SiO2), which is a recently employed technology, has been found to show a remarkable improve on the rheology, stability and interfacial properties of surfactants (Esmaeeli Azadgoleh et al, 2014;Sharma et al, 2016). The effects of SiO2 on stabilizing foams in different type of surfactants have been reported (Xue et al, 2016;Sun et al, 2015). In this study, SiO2 and industrial based surfactant (IBS) were used to formulate a new nanofluid hybrid surfactant (SiO2-IBS), and the effect of the SiO2 on the foamability, thermal stability and interfacial tension of SiO2-IBS had been investigated.…”

Section: *Enhancedmentioning

confidence: 99%

Effect of SiO2 on the foamability, thermal stability and interfacial tension of a novel nano-fluid hybrid surfactant

Hamza

2018

Int. j. adv. appl. sci.

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In foam assisted water alternating gas (FAWAG) method, thermal stability, foamability and interfacial effect of foaming agents (surfactants) are important properties governing the success of oil recovery. The effect of high reservoir temperature is detrimental to these properties, which becomes a great challenge for the applications of surfactants in enhanced oil recovery (EOR). Silica nano-fluid (SiO2), which is a recently employed technology, has been utilized to improve the rheology, stability and interfacial properties of surfactants. This study is aimed at investigating the effect of SiO2 in improving the thermal stability, relative foamability and interfacial (IFT) effect of industrial based surfactant (IBS). Design Expert Software (DOE) using central composite design (CCD) at five levels (-1.68 to +1.68) was employed in the experimental design. The chemical interaction between the SiO2 and IBS in the novel nano-fluid hybrid surfactant (SiO2-IBS) had been successfully established using different spectroscopic instruments (FTIR, XRD, FESEM etc.). Furthermore, under the optimum conditions established, SiO2 had significant effects on the relative foamability and thermal stability of the hybrid material (SiO2-IBS) at 25-110 o C, and their synergistic effect had been quantified in the multivariate models (cubic). However, the IFT result indicated that presence of the SiO2 in the hybrid had reduced the IFT drastically from 120.3 ± 9.8 mN/m to 10.6 ± 6.8 mN/m. Consequently, the novel SiO2-IBS nano hybrid surfactant could be a suitable flooding agent in the high temperature reservoirs for application in FAWAG method.

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Factors influencing the mobility control ability of diutan gum‐enhanced foam in porous media

Lai,

Wang,

Wang

et al. 2023

J of Applied Polymer Sci

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Diutan gum (DG) is an anionic polysaccharide produced by Sphingomonas sp. ATCC 53159. The DG‐enhanced foam (DGEF) formed by the DG and foam has great application potential in enhanced oil recovery. In this research, the influence of injection parameters on DGEF was studied by conducting orthogonal experiment, with residual resistance coefficient (Rff) as the main evaluation index. The micro‐state of the foam was observed using an etching model and scanning electron microscope. The mechanism of different factors on the mobility control ability of the foam was discussed based on the apparent viscosity and surfactant depletion. The results show that the Rff of foam is correlated with the apparent viscosity, and the foam with high apparent viscosity had a good flow control ability. The calculation of the surfactant depletion shows that the bubble stability decreased significantly when the concentration of Sodium alpha‐olefin sulfonate (AOS) cannot meet the minimum stabilization concentration, thus weakening the mobility control ability. Based on the study of crude oils, the presence of oil phase will seriously weaken the mobility control ability of DGEF, but the effect of oil with higher content of resin and asphaltene will be relatively weak.

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High temperature and oil tolerance of surfactant foam/polymer–surfactant foam

Cited by 57 publications

References 37 publications

Experimental investigation of foam performance in the presence of crude oil

Experimental investigation of foam performance in the presence of crude oil

Effect of SiO2 on the foamability, thermal stability and interfacial tension of a novel nano-fluid hybrid surfactant

Factors influencing the mobility control ability of diutan gum‐enhanced foam in porous media

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