Surface properties and adsorption behavior of cocamidopropyl dimethyl amine oxide under high temperature and high salinity conditions

Zhao, Jianhui; Dai, Caili; You, Qing; Feng, Xuan; Yan, Lipeng; Zhao, Mingwei

doi:10.1016/j.colsurfa.2014.03.009

Cited by 23 publications

(15 citation statements)

References 15 publications

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“…When the injection volume was more than 600 PV, the dynamic retention amount of VES was 2.29 mg/g. The adsorption capacity of VES is similar to the adsorption of amphoteric surfactant cocamidopropyl betaine which has been used in high temperature and high pressure reservoir, about 2.069 mg/g reported by Zhao et al 22 The moderate adsorption of VES in fracturing flowback fluid guaranteed its field application during the reutilization process.…”

Section: Dynamic Adsorption Of Fracturing Flowbackmentioning

confidence: 91%

Reutilization of Fracturing Flowback Fluids in Surfactant Flooding for Enhanced Oil Recovery

et al. 2015

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The reutilization of fracturing flowback fluids (which are primarily composed of viscoelastic surfactants) in surfactant flooding was investigated with the aim of making the surfactant flooding process more efficient and cost-effective. The dynamic and equilibrium interfacial tensions and the effects of salinity and temperature on interfacial tension were studied. The oil/water interfacial tension was lowered to 10 −3 mN/m due to 0.004−0.008 wt % viscoelastic surfactant in the flowback fluids. The fracturing flowback fluids were found to be suitable for reservoirs, with a salinity ranging from 0 to 110000 mg/L and temperatures ranging from 50 to 90°C. In the solid/liquid system, the saturated adsorption capacity and dynamic retention capacity were 8.09 mg/g and 2.29 mg/g, respectively. A series of sandpack core-flooding tests were conducted under the reservoir condition to investigate the effects of concentration and the slug size of chemicals on oil recovery. The results showed that the oil recovery value was highest with a surfactant concentration of 0.006 wt %. The oil recovery improved with slug sizes. The optimal chemical slug size in this study was maintained between 0.7 and 0.9 pore volumes (PV) for the efficient reutilization of fracturing flowback fluids. This investigation established that the simulated flowback fluids recovered from fracturing treatment using viscoelastic surfactants can be reused for surfactant flooding with probable environmental and economic benefits.

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Section: Dynamic Adsorption Of Fracturing Flowbackmentioning

confidence: 91%

Reutilization of Fracturing Flowback Fluids in Surfactant Flooding for Enhanced Oil Recovery

et al. 2015

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“…13,43 The variation of surfactant concentration brings about changes in IFTs, which then affects the oil displacement efficiency. 13,43 The variation of surfactant concentration brings about changes in IFTs, which then affects the oil displacement efficiency.…”

Section: Interfacial Tensionmentioning

confidence: 99%

“…The cationic moiety is based on primary, secondary, or tertiary amines or a quaternary ammonium group. [10][11][12][13] In particular, sulfobetaine surfactant, with anionic sulfonic groups in hydrophilic headgroups, is a hot topic and promising research focus in EOR for harsh reservoirs with high temperature and high salinity. Zwitterionic surfactants have been widely used in the eld of cosmetics and washing products, and underlie virtually every aspect of our daily lives.…”

Section: Introductionmentioning

confidence: 99%

The structure effect on the surface and interfacial properties of zwitterionic sulfobetaine surfactants for enhanced oil recovery

et al. 2015

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The surface and interfacial properties of five zwitterionic surfactants, including three propyl sulfobetaines CSB (where the carbon atom number of the alkyl chain is 12, 14 and 16, respectively) and two hydroxypropyl sulfobetaine surfactants CHSB (where the carbon atom number of the alkyl chain is 12 and 14, respectively), were studied at both air-water and oil-water interfaces. The surface activity of these surfactants at the air-water interface in aqueous solutions was investigated by the Wilhelmy plate method at 30 C and ambient pressure. The values of the critical micelle concentration (CMC) and surface tension at CMC (g CMC ) were determined from the surface tension measurements. The obtained results indicate that CMC and surface tension strongly depend on the surfactant molecular structure. An increase in the alkyl chain length results in a decrease in the CMC and g CMC values. The presence of a hydroxyl group causes an increase in CMC values and a decrease in g CMC values. The hydroxypropyl sulfobetaine surfactants have better surfacial properties. In addition, the interfacial activity at the oilwater interface among the crude oil-reservoir water-surfactant systems was investigated by use of the spinning drop method under harsh reservoir conditions of high temperature (90 C) and high salinity (11.52 Â 10 4 ppm, including 7040 ppm Ca 2+ and 614 ppm Mg 2+ ). It is interesting that the transient minimum dynamic interfacial tension (DIT min ) could be observed in a specific concentration range. The time to reach DIT min is different with different surfactant molecular structures and surfactant concentrations. The hydroxypropyl sulfobetaine surfactant C 14 HSB shows excellent interfacial properties:it can reduce interfacial tension (IFT) between oil and water to an ultralow level at a very low concentration, and the ultralow IFT phenomenon only occurs in a specific concentration range from 0.03 to 0.10 wt%. In this work, hydroxypropyl sulfobetaine surfactants exhibit remarkable ability and are good candidates for chemical agents to enhance oil recovery in harsh reservoirs.

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“…We believe that the modied surface roughness of the nanobre mats with and without adsorbents induced the difference between their non-wettable surfaces. The geometric structure of a surface has been identi-ed as one of the most important factors that affects surface wettability, 34 and high surface roughness is essential to develop non-wettable surfaces. In the case of the composite nanobre mats, the adsorbents were incorporated on the surface of the nanobres and nanobre mats, so the composite nanobre mats had rougher surfaces than the pristine Nomex nanobre mat.…”

Section: Adsorptivity Of Cwa Simulants On Mgo and Pom Particlesmentioning

confidence: 99%

Tunable multilayer assemblies of nanofibrous composite mats as permeable protective materials against chemical warfare agents

2017

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Surface properties and adsorption behavior of cocamidopropyl dimethyl amine oxide under high temperature and high salinity conditions

Cited by 23 publications

References 15 publications

Reutilization of Fracturing Flowback Fluids in Surfactant Flooding for Enhanced Oil Recovery

Reutilization of Fracturing Flowback Fluids in Surfactant Flooding for Enhanced Oil Recovery

The structure effect on the surface and interfacial properties of zwitterionic sulfobetaine surfactants for enhanced oil recovery

Tunable multilayer assemblies of nanofibrous composite mats as permeable protective materials against chemical warfare agents

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