MD simulations of oil-in-water/water-in-oil emulsions during surfactant-steam co-injection in bitumen recovery

Fuel ◽  
2021 ◽  
pp. 122718
Author(s):  
Mohammadali Ahmadi ◽  
Zhangxin Chen
Keyword(s):  
Md Simulations ◽  
Oil In Water ◽  
Bitumen Recovery ◽  
Oil Emulsions

scholarly journals Visual Appearance of Oil on the Sea

2021 ◽  
Vol 9 (1) ◽  
pp. 97
Author(s):  
Merv Fingas
Keyword(s):  
Water Surface ◽  
Oil Spills ◽  
Discharge Rate ◽  
Physical Explanation ◽  
Visual Appearance ◽  
Oil In Water ◽  
Other Information ◽  
Surface Discharges ◽  
Oil Emulsions ◽  
Spilled Oil

The visual appearance of oil spills at sea is often used as an indicator of spilled oil properties, state and slick thickness. These appearances and the oil properties that are associated with them are reviewed in this paper. The appearance of oil spills is an estimator of thickness of thin oil slicks, thinner than a rainbow sheen (<3 µm). Rainbow sheens have a strong physical explanation. Thicker oil slicks (e.g., >3 µm) are not correlated with a given oil appearance. At one time, the appearance of surface discharges from ships was thought to be correlated with discharge rate and vessel speed; however, this approach is now known to be incorrect. Oil on the sea can sometimes form water-in-oil emulsions, dependent on the properties of the oil, and these are often reddish in color. These can be detected visually, providing useful information on the state of the oil. Oil-in-water emulsions can be seen as a coffee-colored cloud below the water surface. Other information gleaned from the oil appearance includes coverage and distribution on the surface.

scholarly journals An Oligoimide Particle as a Pickering Emulsion Stabilizer

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1071 ◽  
Author(s):  
Yu-Jin Cho ◽  
Dong-Min Kim ◽  
In-Ho Song ◽  
Ju-Young Choi ◽  
Seung-Won Jin ◽  
...  
Keyword(s):  
Particle Concentration ◽  
Pickering Emulsion ◽  
Pickering Emulsions ◽  
Step Method ◽  
Wetting Properties ◽  
Emulsion Droplets ◽  
Step Procedure ◽  
Oil In Water ◽  
One Step ◽  
Oil Emulsions

A pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA)-based oligoimide (PMDA-ODA) was synthesized by a one-step procedure using water as a solvent. The PMDA-ODA particles showed excellent partial wetting properties and were stably dispersed in both water and oil phases. A stable dispersion was not obtained with comparison PMDA-ODA particles that were synthesized by a conventional two-step method using an organic solvent. Both oil-in-water and water-in-oil Pickering emulsions were prepared using the oligoimide particles synthesized in water, and the size of the emulsion droplet was controlled based on the oligoimide particle concentration. The oligoimide particles were tested to prepare Pickering emulsions using various kinds of oils. The oil-in-water Pickering emulsions were successfully applied to prepare microcapsules of the emulsion droplets. Our new Pickering emulsion stabilizer has the advantages of easy synthesis, no need for surface modification, and the capability of stabilizing both oil-in-water and water-in-oil emulsions.

scholarly journals Naphthenic Acids: Formation, Role in Emulsion Stability, and Recent Advances in Mass Spectrometry-Based Analytical Methods

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Roselaine Facanali ◽  
Nathália de A. Porto ◽  
Juliana Crucello ◽  
Rogerio M. Carvalho ◽  
Boniek G. Vaz ◽  
...  
Keyword(s):  
Analytical Methods ◽  
Oil And Gas ◽  
Oil Quality ◽  
Economic Value ◽  
Oil And Gas Industry ◽  
Naphthenic Acids ◽  
Gas Industry ◽  
Oil In Water ◽  
Oil Emulsions ◽  
Modern Analytical

Naphthenic acids (NAs) are compounds naturally present in most petroleum sources comprised of complex mixtures with a highly variable composition depending on their origin. Their occurrence in crude oil can cause severe corrosion problems and catalysts deactivation, decreasing oil quality and consequently impacting its productivity and economic value. NAs structures also allow them to behave as surfactants, causing the formation and stabilization of emulsions. In face of the ongoing challenge of treatment of water-in-oil (W/O) or oil-in-water (O/W) emulsions in the oil and gas industry, it is important to understand how NAs act in emulsified systems and which acids are present in the interface. Considering that, this review describes the properties of NAs, their role in the formation and stability of oil emulsions, and the modern analytical methods used for the qualitative analysis of such acids.

Activities of Antioxidants Are Affected by Colloidal Properties of Oil-in-Water and Water-in-Oil Emulsions and Bulk Oils

2000 ◽  
Vol 48 (10) ◽  
pp. 4874-4882 ◽  
Author(s):  
Karin Schwarz ◽  
Shu-Wen Huang ◽  
J. Bruce German ◽  
Brigitte Tiersch ◽  
Jürgen Hartmann ◽  
...  
Keyword(s):  
Colloidal Properties ◽  
Oil In Water ◽  
Oil Emulsions

Lubrication With Binary Mixtures: Liquid-Liquid Emulsion in an EHL Conjunction

1993 ◽  
Vol 115 (3) ◽  
pp. 515-522 ◽  
Author(s):  
S. H. Wang ◽  
A. Al-Sharif ◽  
K. R. Rajagopal ◽  
A. Z. Szeri
Keyword(s):  
Binary Mixtures ◽  
Volume Fraction ◽  
Liquid Mixtures ◽  
Important Application ◽  
Solid Surfaces ◽  
Oil In Water ◽  
Liquid Emulsion ◽  
Fraction Distribution ◽  
Oil Emulsions ◽  
Liquid Binary Mixtures

Oil-in-water and water-in-oil emulsions are often employed as lubricants. In many applications of emulsion lubricants both the deformation of the bounding solid surfaces and the pressure dependence of the viscosity of the lubricant contribute essentially to performance, thus defining lubrication in the elastohydrodynamic (EHD) mode. In this paper we investigate lubrication with liquid-liquid binary mixtures of two Newtonian fluids in an EHD conjunction, and discuss the effect of varying the parameters of the problem on pressure, film thickness and volume fraction distribution. The basic theory of lubrication with liquid-liquid mixtures is contained in an earlier publication (Al-Sharif et al., 1992), here we use the theory to study an important application.

scholarly journals PREPARATION OF OLIVE OIL EMULSIONS IN AQUEOUS SOLUTIONS STABILIZED BY OC-20 AND SPAN-60

2020 ◽  
pp. 137-142
Author(s):  
Дарья Алексеевна Портнова ◽  
Виолетта Андреевна Веролайнен ◽  
Светлана Анатольевна Темникова
Keyword(s):  
Aqueous Solutions ◽  
Olive Oil ◽  
Phase Inversion ◽  
Sorbitan Monostearate ◽  
Ionic Surfactants ◽  
Oil In Water ◽  
Oil Emulsions ◽  
Span 60

Методом определения температуры инверсии фаз (ТИФ) получены и исследованы обратные эмульсии оливкового масла в воде с применением в качестве стабилизаторов неионогенных поверхностноактивных веществ синтанола OC-20, сорбитана моностеарата Span 60 и их смесей. Reverse emulsions of olive oil in water with the use of non-ionic surfactants syntanol OC-20, sorbitan monostearate Span 60 and their mixtures as stabilizers were obtained and studied by the method of determining the temperature of phase inversion (TIF).

Switchable superlyophobic zeolitic imidazolate framework-8 film-coated stainless-steel meshes for selective oil–water emulsion separation with high flux

2020 ◽  
Vol 44 (32) ◽  
pp. 13534-13541
Author(s):  
Xin Gao ◽  
Qiang Ma ◽  
Zhengwei Jin ◽  
Pei Nian ◽  
Zheng Wang
Keyword(s):  
Stainless Steel ◽  
High Flux ◽  
Water Droplets ◽  
Oil Droplets ◽  
Zeolitic Imidazolate Framework ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water ◽  
Oil Emulsions

A switchable superlyophobic ZIF-8 membrane can selectively remove oil droplets in oil-in-water emulsions via superoleophobicity and water droplets in water-in-oil emulsions via superhydrophobicity.

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