Fat crystals and water-in-oil emulsion stability

2011 ◽  
Vol 16 (5) ◽  
pp. 421-431 ◽  
Author(s):  
Supratim Ghosh ◽  
Dérick Rousseau
Keyword(s):  
Emulsion Stability ◽  
Oil Emulsion ◽  
Fat Crystals ◽  
Water In Oil Emulsion

Diluted Bitumen Water-in-Oil Emulsion Stability and Characterization by Nuclear Magnetic Resonance (NMR) Measurements†

2007 ◽  
Vol 21 (3) ◽  
pp. 1325-1336 ◽  
Author(s):  
Tianmin Jiang ◽  
George Hirasaki ◽  
Clarence Miller ◽  
Kevin Moran ◽  
Marc Fleury
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Emulsion Stability ◽  
Oil Emulsion ◽  
Water In Oil Emulsion ◽  
Nuclear Magnetic

Influence of a mixed particle/surfactant emulsifier system on water-in-oil emulsion stability

2014 ◽  
Vol 457 ◽  
pp. 49-57 ◽  
Author(s):  
Alla Nesterenko ◽  
Audrey Drelich ◽  
Huiling Lu ◽  
Danièle Clausse ◽  
Isabelle Pezron
Keyword(s):  
Emulsion Stability ◽  
Oil Emulsion ◽  
Emulsifier System ◽  
Water In Oil Emulsion

Effect of the Surfactant Concentration on Sinking Electric Discharge Machining Performance with Water-in-Oil Emulsion as Dielectric

2011 ◽  
Vol 189-193 ◽  
pp. 3153-3157
Author(s):  
Yan Zhen Zhang ◽  
Yong Hong Liu ◽  
Ren Jie Ji ◽  
Bao Ping Cai
Keyword(s):  
Physical Properties ◽  
Electric Discharge ◽  
Surfactant Concentration ◽  
Emulsion Stability ◽  
Experimental Results ◽  
Machining Performance ◽  
Electric Discharge Machining ◽  
Oil Emulsion ◽  
The Stability ◽  
Water In Oil Emulsion

In this paper, the EDM performance of water-in-oil (W/O) emulsions dielectric with different surfactant concentration is investigated by correlated to its physical properties, such as viscosity and droplets size, which is predominantly determined by the surfactant concentration. Experimental results show that the stability of the W/O emulsions increases with increasing surfactant concentration, whereas the EDM performance deteriorates with increasing surfactant concentration. So, taking a comprehensively consideration of the emulsion stability and EDM performance, the concentration of surfactant must be appropriately selected.

scholarly journals Effect of a modified nano clay and nano graphene on rheology, stability of water-in-oil emulsion, and filtration control ability of oil-based drilling fluids: a comparative experimental approach

2020 ◽  
Vol 75 ◽  
pp. 40
Author(s):  
Vahid Nooripoor ◽  
Abdolnabi Hashemi
Keyword(s):  
Base Fluid ◽  
Emulsion Stability ◽  
Nano Particles ◽  
Model Parameters ◽  
Drilling Fluids ◽  
Shear Stresses ◽  
Oil Emulsion ◽  
Nano Clay ◽  
Nano Graphene ◽  
Water In Oil Emulsion

During the past decade, researchers have used different Nano-Particles (NPs) due to their unique characteristics for improving formulation of Oil-Based Drilling Fluids (OBDFs). This study is the first research that investigates the effect of a Modified Nano Clay (MNC), namely CLOISITE 5 and non-functionalized Nano Graphene (NG) on rheology, electrical/emulsion stability, and filtration control ability, as the main properties of OBDFs. Initially, five concentrations of both NPs (0.25, 0.5, 1, 1.5, and 2 wt%) were added separately into an NP-free OBDF (the base fluid). Then, rheological properties and electrical stability of all prepared fluids were measured at three 90, 140, and 180 °F temperatures. Moreover, filtration test was carried out under 500 psi (3447 kPa) differential pressure and exposed to 300 °F temperature for all fluids. Since experimentally measured shear stresses followed well both Herschel Bulkley (shear-thinning) and Bingham Plastic models, effects of temperature and the NPs concentration on both model parameters are investigated more deeply in the paper. Activation energies calculated from Arrhenius model showed that MNC is more effective than NG on reducing the dependency of apparent and plastic viscosities of the base fluid on temperature. MNC, due to its amphiphilic structure, significantly stabilizes water-in-oil emulsion at all temperatures and concentrations, but NG with high electrical conductivity reduces the emulsion stability. The nanofluids containing 0.5 wt% MNC and 0.25 wt% NG which have respectively 32.6% and 43.5% fewer filtrate volumes than the base fluid, were considered as the optimal nanofluids from controlling filtration into formation aspect. Finally, MNC is applicable to enhance the formulation of the OBDF through supporting its commercial viscosifier, emulsifiers, and fluid loss control agent, but the negative effect of NG on emulsion stability limits its application.

scholarly journals Malaysian Crude Oil Emulsions : Stability Study

REAKTOR ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 29
Author(s):  
B. Pramudono ◽  
H. B. Mat
Keyword(s):  
Crude Oil ◽  
Emulsion Stability ◽  
Stability Study ◽  
Active Components ◽  
Oil Emulsion ◽  
Result Show ◽  
Oil Emulsions ◽  
The Stability ◽  
Stability Of Water ◽  
Water In Oil Emulsion

The stability of water-in-oil emulsion of some Malaysian crude oils was studied with particular emphasis on effect of interfacial active components existed in the crude oil, i.e. asphaltene, resin and wax. The emulsion stability was studied by measuring the volume of water or oil phase separated in variation with time, water hold up, and the heights of the sedimenting/coalescing interfaces during the separation at various temperatures. The study investigated the influence of asphaltene, resin and wax on emultion stability if it`s present in the crude oil alone, together or combination one of the others. The result show that the interfacial active component that stabilize emulsion is asphaltene. The resin and wax  do not form stale emulsion either aloneor together. There is a correlation between emulsion stability and physicochemical properties of crude oil which showed that higher asphaltene content in the crude oil would form more stable emultion. Increased temperature was found to cause instability of emultion. Keywords : emultion stability, crude oil, asphaltene, resin and wax

Investigating the Impact of Crude Oil Solubility on Water-in-Oil Emulsion Stability and Its Relation to Molecular Composition of Crude Oil at the Oil–Water Interface

2015 ◽  
Vol 29 (6) ◽  
pp. 3616-3625 ◽  
Author(s):  
Daniel P. Cherney ◽  
Chunping Wu ◽  
Rachel M. Thorman ◽  
Jessica L. Hegner ◽  
Mohsen S. Yeganeh ◽  
...  
Keyword(s):  
Crude Oil ◽  
Emulsion Stability ◽  
Molecular Composition ◽  
Water Interface ◽  
Oil Emulsion ◽  
Oil Water ◽  
Water In Oil Emulsion ◽  
The Impact

scholarly journals Stability of Pyrolysis Oil-Water Emulsion

2014 ◽  
Vol 953-954 ◽  
pp. 1238-1241 ◽  
Author(s):  
Pipat Subsuksumran ◽  
Prakorn Kittipoomwong ◽  
Monpilai Narasingha ◽  
Wirachai Soontornrangson
Keyword(s):  
Emulsion Stability ◽  
Product Yield ◽  
Visual Observation ◽  
Raw Material ◽  
Pyrolysis Oil ◽  
Heating Rates ◽  
Water Emulsion ◽  
Oil Emulsion ◽  
Oil Water ◽  
Water In Oil Emulsion

Emulsification of pyrolysis oil produced from plastic waste has been experimented. The employed cascade heating steps and heating rates pyrolysis process provides 80% product yield using waste plastic or recycles HDPE pellets as a raw material. Water-in-oil emulsion is produced ultrasonically and mechanically with Span80 as a surfactant. The emulsion stability was assessed by water droplet size and visual observation of any phase separation. An ultrasonic mixer is found to be more effective than mechanical homogenizer in terms of homogenous stability to emulsify plastic oil with water. For emulsion with 10% water by volume, the emulsion is observed to be stable for up to 24 hours after mixing.

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