Demulsification of Water‐in‐Oil Emulsions for the Petroleum Industry by using Alternating Copolymers

Yan, Chuanyu; Han, Jin Wook; Huang, Chien-Kang; Mu, Tiancheng

doi:10.1002/ente.201400012

Cited by 9 publications

(8 citation statements)

References 27 publications

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“…317 Using their synthesized alternating hydrophilic-lipophilic copolymers (HaLCs), Yan et al reported a complete demulsification at room temperature in less than 10 min. 456 Aburto et al observed a high demulsification efficiency using a synthetic ionic surface-active choline carboxylate together with microwave irradiation. 457 Rhamnolipid was also found to be able to destabilize the oil-water emulsions.…”

Section: Demulsification Of Heavy Oil Emulsionsmentioning

confidence: 99%

Interfacial sciences in unconventional petroleum production: from fundamentals to applications

et al. 2015

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With the ever increasing demand for energy to meet the needs of growth in population and improvement in the living standards in particular in developing countries, the abundant unconventional oil reserves (about 70% of total world oil), such as heavy oil, oil/tar sands and shale oil, are playing an increasingly important role in securing global energy supply. Compared with the conventional reserves unconventional oil reserves are characterized by extremely high viscosity and density, combined with complex chemistry. As a result, petroleum production from unconventional oil reserves is much more difficult and costly with more serious environmental impacts. As a key underpinning science, understanding the interfacial phenomena involved in unconventional petroleum production, such as oil liberation from host rocks, oil-water emulsions and demulsification, is critical for developing novel processes to improve oil production while reducing GHG emission and other environmental impacts at a lower operating cost. In the past decade, significant efforts and advances have been made in applying the principles of interfacial sciences to better understand complex unconventional oil-systems, while many environmental and production challenges remain. In this critical review, the recent research findings and progress in the interfacial sciences related to unconventional petroleum production are critically reviewed. In particular, the chemistry of unconventional oils, liberation mechanisms of oil from host rocks and mechanisms of emulsion stability and destabilization in unconventional oil production systems are discussed in detail. This review also seeks to summarize the current state-of-the-art characterization techniques and brings forward the challenges and opportunities for future research in this important field of physical chemistry and petroleum.

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Section: Demulsification Of Heavy Oil Emulsionsmentioning

confidence: 99%

Interfacial sciences in unconventional petroleum production: from fundamentals to applications

et al. 2015

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“…The emulsions, including water in oil and oil in water, can be separated into two phases by demulsifiers. The common demulsifiers are generally organic molecules, such as ethylene‐oxide–propylene oxide, amphiphilic block copolymers, hydrophilic‐alternating‐lipophilic copolymers, polyoxyalkylates, diethanolamines, and so on. Most of them are too complicated to synthesize and remain in the oil or water phases after demulsification.…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Demulsifier of ODTS Modified Magnetite/Reduced Graphene Oxide Nanocomposites for Oil–water Separation

Wang

et al. 2016

ChemistrySelect

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A bifunctional demulsifier of ODTS modified magnetite/reduced graphene oxide (MRGO@ODTS) was synthesized and demonstrated to demulsify effectively both water‐in‐oil (W/O) and oil‐in‐water (O/W) emulsions, benefitting from its surfactant property. The demulsifier was fully characterized with TEM, XRD, FTIR, TGA, and magnetometer instruments, which confirmed the evenly Fe3O4 nanoparticle modified RGO sheet structure of MRGO@ODTS demulsifier. The demulsification efficiency can reach 96.8 ± 2.9 % for W/O emulsion and 97.9 ± 2.1 % for O/W emulsion with 25 g L−1 and 75 g L−1 demulsifier, respectively. Another important feature of MRGO@ODTS is responsive to magnetic field, and consequently reusable. The recyclability tests of MRGO@ODTS show there is no obvious decline of demulsification efficiency within ten cycles. The demusification ability of MRGO@ODTS is more effective for W/O emulsions than that for O/W emulsions. The possible demulsification mechanism was also proposed. The bifunctional demulsifier may find great potential in oil‐water separation in industry.

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“…Wang and Alvarado investigated how particle suspensions contribute to emulsion stability by characterizing the kaolinite F I G U R E 2 Schematic diagram of the formation of the interfacial films on the O/W interface of asphaltenes and resins [95][96][97][98] and silica particle dispersions as a function of brine salinity in the reference aqueous phase. 50 Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to examine the morphology and composition of the clay.…”

Section: Solid Particlesmentioning

confidence: 99%

“…Schematic diagram of the formation of the interfacial films on the O/W interface of asphaltenes and resins 95–98 …”

Section: Formation and Stability Mechanismmentioning

confidence: 99%

Research status and analysis of stabilization mechanisms and demulsification methods of heavy oil emulsions

Zhao

Zhexi

et al. 2020

Energy Science & Engineering

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Oil plays an indispensable role in the ever-increasing global energy economy. Over the past 20 years, oil demand has steadily increased from 60 to 84 million barrels per day. 1 With the explosive expansion of consumption and industry in emerging countries like China and India in the early years of the 21st century, the global average annual growth rate of demand for crude oil has grown to 3.4%. 2 The reduction in conventional oil and gas resources has led to the promotion, development, and utilization of unconventional resources, particularly heavy oil and oil sands. Heavy oil accounts for half of the world's crude oil reserves, and Canada has the world's largest heavy oil and bituminous production, with approximately 1 trillion and 700 billion barrels of heavy oil and asphalt, respectively. 3,4 Crude oil from reservoirs usually consists of a series of hydrocarbons, such as olefins, naphthenic hydrocarbons, aromatic compounds, phenols, carboxylic acids, and some impurities (such as water, sediments, and a small amount of

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Demulsification of Water‐in‐Oil Emulsions for the Petroleum Industry by using Alternating Copolymers

Cited by 9 publications

References 27 publications

Interfacial sciences in unconventional petroleum production: from fundamentals to applications

Interfacial sciences in unconventional petroleum production: from fundamentals to applications

Bifunctional Demulsifier of ODTS Modified Magnetite/Reduced Graphene Oxide Nanocomposites for Oil–water Separation

Research status and analysis of stabilization mechanisms and demulsification methods of heavy oil emulsions

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