Breaking of Water-in-Crude Oil Emulsions. 6. Estimating the Demulsifier Performance at Optimum Formulation from Both the Required Dose and the Attained Instability

Delgado-Linares, José G.; Pereira, Juan Carlos; Rondón, Miguel; Bullón, Johnny; Salager, Jean‐Louis

doi:10.1021/acs.energyfuels.6b00666

Cited by 39 publications

(104 citation statements)

References 55 publications

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“…Emulsion breaking and destabilization, and therefore crude oil dehydration, is known to occur with a minimum stability exactly at HLD N = 0 [ 70 , 132 , 138 ]. Thus, physicochemical formulation can be changed according to the variables that can be used (for example, the type of surfactant used, temperature and cosurfactant) [ 34 , 130 , 132 ]…”

Section: Improved Performance and Robustness In Crude Oil Dewatering And Dehydrationmentioning

confidence: 99%

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Formulation Improvements in the Applications of Surfactant–Oil–Water Systems Using the HLDN Approach with Extended Surfactant Structure

2021

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Soap applications for cleaning and personal care have been used for more than 4000 years, dating back to the pharaonic period, and have widely proliferated with the appearance of synthetic surfactants a century ago. Synthetic surfactants used to make macro-micro-nano-emulsions and foams are used in laundry and detergency, cosmetics and pharmaceuticals, food conditioning, emulsified paints, explosives, enhanced oil recovery, wastewater treatment, etc. The introduction of a multivariable approach such as the normalized hydrophilic–lipophilic deviation (HLD N) and of specific structures, tailored with an intramolecular extension to increase solubilization (the so-called extended surfactants), makes it possible to improve the results and performance in surfactant–oil–water systems and their applications. This article aims to present an up-to-date overview of extended surfactants. We first present an introduction regarding physicochemical formulation and its relationship with performance. The second part deals with the importance of HLD N to make a straightforward classification according to the type of surfactants and how formulation parameters can be used to understand the need for an extension of the molecule reach into the oil and water phases. Then, extended surfactant characteristics and strategies to increase performance are outlined. Finally, two specific applications, i.e., drilling fluids and crude oil dewatering, are described.

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Section: Improved Performance and Robustness In Crude Oil Dewatering And Dehydrationmentioning

confidence: 99%

“…Several other surfactants that were tried since 1995 were used in different applications, including EOR and the solubilization of polar oils [ 24 , 25 , 26 , 27 , 28 , 29 , 30 ], but also other not-so-conventional applications, such as drilling fluids [ 31 , 32 , 33 ] and crude oil dewatering [ 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Formulation Improvements in the Applications of Surfactant–Oil–Water Systems Using the HLDN Approach with Extended Surfactant Structure

2021

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“…It can produce a compromising behavior between the components. Thus, with some synergistic effect, the mixture usually can promote a good performance as a demulsifier (Sjöblom 2001;Delgado-Linares et al 2016). Grenoble and Trabelsi (2018) had carried out a study on optimum demulsifier formulations based on hydrophilic-lipophilic balance.…”

Section: Chemical Demulsifiersmentioning

confidence: 99%

A critical review of development and demulsification mechanisms of crude oil emulsion in the petroleum industry

Raya

Saaid

Ahmed

et al. 2020

J Petrol Explor Prod Technol

138

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The need for efficient demulsification process to treat emulsions in the petroleum industry is well acknowledged. For decades, numerous researches have been conducted to examine mechanisms of emulsification and demulsification. Untreated emulsion has both technical and commercial implications in the industry, especially in terms of treatment facilities, refining and transportation. Effective treatment is needed to ensure optimum production of hydrocarbons. The present paper is to review reported works on the formation of petroleum emulsions, demulsification treatments, characteristics of fit-for-purpose demulsifiers as well as research trends in emulsion treatment. Crude oils are naturally combined with natural surfactants having high tendency to form stable emulsion. The stable emulsion must be treated well to meet industrial requirements since crudes with a high volume of stable emulsion have a less value. Therefore, fundamental studies on natural surfactants, which contribute to the emulsion stability, are analyzed for the effective separation of emulsions into oil and water. This would involve the assessment of various reported mechanisms for the emulsification and right formulation for effective demulsification.

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“…The authors established that the emulsion formation and behavior vary from one crude oil to another. A follow-up study by Delgado-Linares et al [55] revealed that the natural surfactants in crude oil reduce the IFT of oil-water, leading to the formation of an interfacial film. This interfacial film, which is characterized by its mechanical strength, serves an important function in the formation and stability of the emulsion [56].…”

Section: Emulsion Formationmentioning

confidence: 99%

An Overview of Recent Advances in State-of-the-Art Techniques in the Demulsification of Crude Oil Emulsions

et al. 2019

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The processing of crude oil often requires the extraction of a large amount of water. Frequently, crude oil is mixed with water to form water-in-crude oil emulsions as the result of factors such as high shear at the production wellhead and surface-active substances that are naturally present in crude oil. These emulsions are undesirable and require demulsification to remove the dispersed water and associated inorganic salts in order to meet production and transportation specifications. Additionally, the demulsification of these crude oil emulsions mitigates corrosion and catalyst poisoning and invariably maximizes the overall profitability of crude oil production. Recently, there has been growing research interest in developing workable solutions to the difficulties associated with transporting and refining crude oil emulsions and the restrictions on produced water discharge. Therefore, this paper reviews the recent research efforts on state-of-the-art demulsification techniques. First, an overview of crude oil emulsion types, formation, and stability is presented. Then, the parameters and mechanisms of emulsification formation and different demulsification techniques are extensively examined. It is worth noting that the efficiency of each of these techniques is dependent on the operating parameters and their interplay. Moreover, a more effective demulsification process could be attained by leveraging synergistic effects by combining one or more of these techniques. Finally, this literature review then culminates with propositions for future research. Therefore, the findings of this study can help for a better understanding of the formation and mechanisms of the various demulsification methods of crude oil to work on the development of green demulsifiers by different sources.

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Breaking of Water-in-Crude Oil Emulsions. 6. Estimating the Demulsifier Performance at Optimum Formulation from Both the Required Dose and the Attained Instability

Cited by 39 publications

References 55 publications

Formulation Improvements in the Applications of Surfactant–Oil–Water Systems Using the HLDN Approach with Extended Surfactant Structure

Formulation Improvements in the Applications of Surfactant–Oil–Water Systems Using the HLDN Approach with Extended Surfactant Structure

A critical review of development and demulsification mechanisms of crude oil emulsion in the petroleum industry

An Overview of Recent Advances in State-of-the-Art Techniques in the Demulsification of Crude Oil Emulsions

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