Influence of the salinity on the interfacial properties of a Brazilian crude oil–brine systems

Alves, Douglas; Carneiro, Juliana; Oliveira, Iago; Façanha, Francisco; Santos, Alexandre F.; Dariva, Cláudio; Franceschi, Elton; Fortuny, Montserrat

doi:10.1016/j.fuel.2013.10.057

Cited by 74 publications

(57 citation statements)

References 18 publications

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“…The shear test method utilizes a stress rheometer with a double‐wall ring geometry and an interfacial rheology cell with bi‐cone geometry . The expansion test method includes the pendant drop method, the oscillating drop method, and the spinning drop method…”

Section: Rheological Property and Stability Of Emulsionsmentioning

confidence: 99%

A comprehensive review of emulsion and its field application for enhanced oil recovery

Yazhou

Yin

Chen

et al. 2019

Energy Science & Engineering

104

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Emulsification plays an important role in enhancing oil recovery. Experiments and field applications of alkali/surfactant/polymer (ASP) flooding indicated that the amount of oil recovery in liquids with emulsions is 5% higher than that in liquids with no emulsions. Therefore, it is of great significance to study emulsion and its field application for enhanced oil recovery. This paper discusses the current status of emulsion for enhanced oil recovery, including the formation mechanism of emulsions in chemical flooding, rheological properties, stability, seepage characteristics, emulsion improving sweep volume, and displacement efficiency, along with future development plans of emulsion for enhanced oil recovery, especially surfactants for chemical flooding. In addition, the Pickering emulsion for application in enhanced oil recovery is also discussed. The development effects of emulsion flooding have been discussed for the Midway‐Sunset Oilfield, the emulsification characteristics of ASP flooding have been analyzed in Xing‐V and Xing‐II of the Daqing Oilfield, and the experiences regarding emulsion for enhanced oil recovery have been summarized. The key research directions of emulsion for enhanced oil recovery are indicated.

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Section: Rheological Property and Stability Of Emulsionsmentioning

confidence: 99%

A comprehensive review of emulsion and its field application for enhanced oil recovery

Yazhou

Yin

Chen

et al. 2019

Energy Science & Engineering

104

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“…Many problems associated with lifting and crude oil production are due to the presence of water-in-crude oil (W/O) emulsion, which usually causes severe problems like the corrosion of equipment systems (reactors, columns, mixer, balloon, ... ), decreasing the activity of the catalyst and other environmental problems [3 -6]. During the last sixteen years, many investigations have been under-taken to improve the resolution of these emulsions through, the combination of thermal and chemical treatments in order to provide high efficiency during the processing [5].…”

Section: Introductionmentioning

confidence: 99%

“…The formation of water-oil emulsion occurs during the refining stage of oil production [5]. Thus, it becomes necessary to separate water from crude oils due to economic and operation condition reasons [5,6]. Water/crude oil emulsions have to be broken down in order to reduce the highest amount of water content in crude oils (demulsified) [6].…”

Section: Introductionmentioning

confidence: 99%

THE EFFECT OF WATER CONTENT, pH, SALINITY AND TEMPERATURE ON THE STABILITY AND SURFACE TENSION OF RUSSIAN URALS CRUDE OIL EMULSION

Arroussi¹,

Mensah²,

Arroussi³

2019

Vestnik

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The effect of pH, salinity and temperature on stability and surface tension of Russian Urals crude oil-water emulsions were investigated. Emulsions were prepared by mixing distilled water and Russian crude oil (1/3) volume ratio with three different buffered solutions of pH 2.00, 4.00 and 7.00. The stability of the emulsions and their surface tension were measured. Five aqueous solutions of NaCl (concentrations 0.570, 1.407, 1.711, 3.080 and 4.106 mol/l, respectively) were mixed with the crude oil and volume fraction 1/4 (water/oil) to make emulsions, another five aqueous solutions for the crude oil (1.50g, 2.50g, 3.50g, 4.50g and 5.50g of NaCl) were prepared. Surface tension of the emulsions and that of the crude oil and stability of emulsions were measured. In order to avoid distillation of the light components from our close measuring vessel, temperatures 20.01, 25.05, 29.01, 31.50 and 35.05 °C were applied. Surface tension of crude oil and that of an emulsion of 3/1 (oil/water) volume fraction were measured. Surface tensions of crude oil, and emulsion decrease as the temperature increases, but the surface tension of crude oil and emulsion increased as the salinity (concentration NaCl) as well as the pH value in the range (from 2.00 to 7.00) increases. On the other hand, the results of emulsions stability show that the stability of emulsions decreases both with increasing temperature and (NaCl) salt concentration, also, as the water fraction increases, the emulsion stability decreases. For pH, it was found that there is unstable emulsion formed at pH=7.00 and a very stable emulsion formed at pH = 2.00.

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“…In petroleum production, emulsions have drawn attention for their positive roles in enhanced oil recovery. Emulsion flooding can not only improve sweep efficiency by mobility control but also boost the displacement efficiency through emulsification entrainment (Alves et al, 2014;Jin et al, 2016;Ko et al, 2014;Maaref et al, 2017;Wang and Alvarado, 2012). Guillen et al (2012) applied O/W emulsion in coreflooding experiments after water flooding.…”

Section: Introductionmentioning

confidence: 99%

“…Emulsion stability is the key factor influencing the emulsion performance in porous media and it is closely related to injected water composition such as salinity and pH. A large number of studies have reported that pH and salinity have a strong influence on emulsion stability (Alves et al, 2014;Chen et al, 2017;Daaou and Bendedouch Saudi, 2012;Dehghan et al, 2017;Elsharkawy et al, 2008;Maaref et al, 2017;Wang and Alvarado, 2012). Maaref et al (2017) researched the effect of salinity on W/O emulsion flow performance in a micromodel.…”

Section: Introductionmentioning

confidence: 99%

Properties of Emulsions Formed In Situ In a Heavy‐Oil Reservoir during Water Flooding: Effects of Salinity and pH

Shen

Pang

et al. 2018

J Surfact & Detergents

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Differing from conventional emulsions, water‐in‐oil (W/O) emulsions are produced with no additional surfactants in this study. The testing results show that both interfacial tension (IFT) and dilational modulus at all salinities and pH are much higher than those of normal emulsions. A high IFT is not good for making emulsions, but a higher dilational modulus will contribute to more stable emulsions. Emulsion stability declines slightly as salinity increases and the most unstable W/O emulsion appears at pH = 7. To deeply understand the effects of salinity and pH on emulsion stability, petroleum acid is extracted and characterized using Fourier transform ion cyclotron resonance mass spectrometry.

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Influence of the salinity on the interfacial properties of a Brazilian crude oil–brine systems

Cited by 74 publications

References 18 publications

A comprehensive review of emulsion and its field application for enhanced oil recovery

A comprehensive review of emulsion and its field application for enhanced oil recovery

THE EFFECT OF WATER CONTENT, pH, SALINITY AND TEMPERATURE ON THE STABILITY AND SURFACE TENSION OF RUSSIAN URALS CRUDE OIL EMULSION

Properties of Emulsions Formed In Situ In a Heavy‐Oil Reservoir during Water Flooding: Effects of Salinity and pH

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