Influence of surfactant and electrolyte concentrations on surfactant Adsorption and foaming characteristics

Yekeen, Nurudeen; Manan, Muhammad A.; Idris, Ahmad Kamal; Samin, Ali Mohamed

doi:10.1016/j.petrol.2016.11.018

Cited by 159 publications

(82 citation statements)

References 45 publications

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“…The foaming characteristics of these surfactants make them ideal candidates for EOR. Optimal salt concentrations for foam stability were also reported in SDS systems in magnesium chloride (Yekeen et al, ). In general, foamability, as represented by initial foam height, decreased with increasing salinity.…”

Section: Resultsmentioning

confidence: 76%

Development of Polyoxyethylene Zwitterionic Surfactants for High‐Salinity High‐Temperature Reservoirs

Kamal

Hussain

Fogang

et al. 2019

J Surfact & Detergents

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Substantial efforts are underway to improve the recovery factor from existing oil reserves to meet the ever‐growing global oil demand. Surfactants are known to increase oil recovery through reducing interfacial tension (IFT) and/or altering the rock wettability. The selection of surfactants for high‐salinity high‐temperature oil fields is a challenging task owing to poor thermal stability, precipitation, and adsorption of surfactants on reservoir rocks. Sulfobetaine‐based polyoxyethylene zwitterionic surfactants have shown excellent thermal and surface properties. However, their solubility in high‐salinity brines becomes poor particularly with a long hydrophobic tail (>C17). Recently, we synthesized such types of surfactants by incorporating ethylene oxide (EO) units into the hydrophobic tail, which improved the solubility in formation water (213,734 ppm) and seawater (SW) (57,643 ppm). In this work, we investigated the IFT, thermal stability, rheological behavior, and foaming properties of two polyoxyethylene zwitterionic surfactants having different degrees of ethoxylation. Aging experiments exhibited excellent thermal stability and no change in the chemical structure was detected. The surfactant with lesser EO units (EASB‐1a) showed a lower IFT compared to the surfactant with higher EO units (EASB‐1b). Rheological studies revealed that the addition of both surfactants reduced the viscosity of the acrylamide copolymer. However, the effect of EASB‐1a was more prominent compared to that of EASB‐1b. The surfactant with a higher degree of ethoxylation showed lower adsorption compared to the surfactant with a lesser degree of ethoxylation. Both surfactants showed excellent foamability and foam stability compared to the commercial surfactants. Excellent thermal stability, water solubility under harsh reservoir conditions, foaming properties, and lower adsorption make them a suitable choice for high‐temperature, high‐salinity reservoirs.

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Section: Resultsmentioning

confidence: 76%

Development of Polyoxyethylene Zwitterionic Surfactants for High‐Salinity High‐Temperature Reservoirs

Kamal

Hussain

Fogang

et al. 2019

J Surfact & Detergents

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“…As seen from Fig. , the microscopic morphologies of the different foams above the CMC show a distinct difference, which can be explained in terms of bubble size as well as the thickness of lamellae (Yekeen et al, ). Specifically, the foams of the CTAO and CTAM solution are relatively spherical.…”

Section: Resultsmentioning

confidence: 96%

“…In contrast, the other foams are obviously irregular, and the liquid films are multilayered. Besides, the foam cell size is larger with thinner films, causing a fast rate of foam coalescence and coarsening (Yekeen et al, ). In addition, the foam films above the CMC were thinner in cases other than the CTAO and CTAM solutions, which can further prove the fact the number of methylenes in the dibasic acid radical changes the arrangement between the hydrophobic groups, which exerts an influence on the foaming microstructure.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Interface Activity of a Series of Dicarboxylic Cationic Surfactants and a Structure–Efficiency Relationship Study

Chen

Bai

Liu

et al. 2019

J Surfact & Detergents

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Quaternary ammonium cationic surfactants are widely used in many fields, but information about the effect of the anion on cationic surfactants is scarce. To study the effect of anions on the surface properties, six dicarboxylic cationic surfactants were prepared, (cetyltrimethylammonium oxalate, CTAO; cetyltrimethylammonium malonate, CTAM; cetyltrimethylammonium succinate, CTASU; cetyltrimethylammonium glutarate, CTAG; cetyltrimethylammonium adipate, CTAA; and cetyltrimethylammonium sebacate, CTASE), and their surface properties were studied, including surface tension, critical micelle concentration, foaming ability and stability, and corrosion inhibition. The results showed that the minimum surface tension followed the order of CTAOCTAM>CTASU>CTAG>CTAA>CTASE. The foaming stability followed the order of CTAM>CTAO>CTASU>CTAG>CTAA>CTASE. At a concentration of 1.0 g L−1, the order of emulsification power of these surfactants was CTASE

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“…Foam stability can be defined as the time a foam film exists without rupturing (Sakai and Kaneko 2004). It is generally indicated by foam half-life (time needed for foam to decay half of its original foam) (Yekeen et al 2017b) Fig. 5 shows the half-life of the bulk foam experiments, both with and without the blend of LB at 60 °C, with longer half-life indicating a more stable foam.…”

Section: Foam Stabilitymentioning

confidence: 99%

Influence of lauryl betaine on aqueous solution stability, foamability and foam stability

Syed

Idris

Mohshim

et al. 2019

J Petrol Explor Prod Technol

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In gas flooding, one of the major problems in implementing foam as a gas mobility control method is the stability of foam. Foam booster when blended with surfactant could improve the foam stability. However, the influence of foam booster on the conventional foam stability and foamability at elevated temperature and presence of inorganic electrolytes is not yet explicit due to limited studies in this area. The objective of the present work was to evaluate the influence of a foam booster on aqueous solution stability, foamability and foam stability when blended with surfactant at different ratios at an elevated temperature in the presence of brine composed of monovalent and divalent ions. Three different surfactants AOS C 14-16 (alpha-olefin sulfonate), SDS (sodium dodecyl sulfate) and a locally manufactured surfactant 'Surf X' were chosen as base surfactants. An amphoteric surfactant lauryl betaine was chosen as a foam booster in this study. The aqueous solution stability was visually evaluated, whereas the bulk foam experiments were conducted in a commercial foam analyzer apparatus. It was found that not all solutions were stable when lauryl betaine was blended. Lauryl betaine did not improve the foam generation time. The foam stability was improved; however, not all solutions were able to generate stable foam. 'Surf X' was able to generate more stable foam as compared to AOS and when blended with lauryl betaine it also required less amount of lauryl betaine to generate stable foam.

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Influence of surfactant and electrolyte concentrations on surfactant Adsorption and foaming characteristics

Cited by 159 publications

References 45 publications

Development of Polyoxyethylene Zwitterionic Surfactants for High‐Salinity High‐Temperature Reservoirs

Development of Polyoxyethylene Zwitterionic Surfactants for High‐Salinity High‐Temperature Reservoirs

Synthesis and Interface Activity of a Series of Dicarboxylic Cationic Surfactants and a Structure–Efficiency Relationship Study

Influence of lauryl betaine on aqueous solution stability, foamability and foam stability

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