Preparation and interfacial behavior of surface-active microspheres for both emulsion stabilization and profile control

2022 ◽  
Vol 208 ◽  
pp. 109414
Author(s):  
Jincheng Gong ◽  
Yanfeng Ji ◽  
Yanling Wang ◽  
Haiming Fan ◽  
Zhiyi Wei ◽  
...  
Keyword(s):  
Interfacial Behavior ◽  
Profile Control ◽  
Emulsion Stabilization ◽  
Surface Active

The Application of High Temperature Foam Surface Active Agent Used in Heavy Oil Thermal Recovery

2014 ◽  
Vol 672-674 ◽  
pp. 700-703 ◽  
Author(s):  
En Hong Liu
Keyword(s):  
High Temperature ◽  
Heavy Oil ◽  
Surface Active Agent ◽  
Active Agent ◽  
Steam Injection ◽  
Carbon Chain ◽  
Thermal Recovery ◽  
Alkyl Benzene Sulfonate ◽  
Profile Control ◽  
Surface Active

Heavy oil in Liaohe oilfield is buried in more than 1000 meters, and the steam injection temperature is around 350°C. Through the experiment on surfactant product, high temperature foam surface active agent was developed, which was based on high carbon chain alkyl benzene sulfonate or alkyl toluene sulfonate, and auxiliary solvent and stabilizer were added. High temperature foam surface active agent can meet the needs of steam foam profile control technology.

scholarly journals Finding a relationship between the composition and the emulsifying character of asphaltenes through FTICR-MS

2018 ◽  
Vol 8 (1) ◽  
pp. 45-52 ◽  
Author(s):  
Jorge A. Orrego- Ruíz
Keyword(s):  
Atmospheric Pressure ◽  
Emulsion Stability ◽  
Crude Oils ◽  
Ion Cyclotron Resonance ◽  
Oil Emulsion ◽  
Fticr Ms ◽  
Atmospheric Pressure Photo Ionization ◽  
Emulsion Stabilization ◽  
Surface Active ◽  
Photo Ionization

In this work, n-heptane insoluble fractions (asphaltenes) from six crude oils were analyzed by means of Fourier-transform ion cyclotron resonance mass spectrometry (FTICR MS) using both positive Atmospheric Pressure Photo Ionization (+) APPI and negative Electro- Spray Ionization (-) ESI in order to understand their water-oil emulsion stabilization capability on a molecular level basis. Through (+) APPI it was possible to obtain an overview of samples composition. By sorting as nitrogen sulfur and oxygen containing compounds, it was possible to compositionally distinguish the asphaltenes. Through (-) ESI, several differences were also observed by grouping the classes as oxygen (NxOy+NxOySz+Oy+OySz) and non oxygen containing classes (Nx+NxSz). The interactions of these two groups of compounds must be considered in order to understand the water-oil emulsion stability. It implies that the cores where nitrogen and sulfur are part may interact via π-π stacking, while the oxygen containing compounds may interact either via hydrogen bonding or via dipole forces with the aromatic aggregates (highly polarizable), forming potentially surface active aggregates. Thus, the rate between these two families of compounds may determine the surfactant character of asphaltenes at the water-oil interface. Bearing this in mind, an emulsion stability coefficient was proposed based on the relative abundances of some families of compounds detected by (-) ESI-FTICR-MS to explain the crude oils’ tendency to form emulsions.

Interfacial and Emulsifying Behavior of Essential Oils Using as Retarded Steam Delivery

2013 ◽  
Vol 699 ◽  
pp. 228-233
Author(s):  
Jens Peter Krause ◽  
Mont Kumpugdee-Vollrath
Keyword(s):  
Controlled Release ◽  
Essential Oils ◽  
Interfacial Behavior ◽  
Application Form ◽  
Active Compounds ◽  
Steam Chamber ◽  
Storage Behavior ◽  
Surface Active ◽  
Surface Active Compounds

Storage behavior and controlled release of steam are the most important properties of the essential o/w emulsions for application in steam baths. The interfacial behavior, emulsion properties and steam delivery of three commercial essential oils were investigated to improve their application. A special designed lab-scale steam chamber was successfully used for the release tests. It was found that the essential oils showed characteristic interfacial and emulsion behaviors which depend on the content of surface active compounds. The relative steam delivery profile of various oil types were negligibly different. The most useful application form seems to be oil-loaded micelle dispersions (solubilisates).

Study on Enhancing Recovery Factor of Binary Compound Flooding Using Surface-Active Polymer as Pre-Slug

2012 ◽  
Vol 482-484 ◽  
pp. 117-120
Author(s):  
Wei Li ◽  
Hui Hui Kou ◽  
Han Min Xiao ◽  
Ling Hui Sun ◽  
Zhen Feng Li
Keyword(s):  
Homogeneous Model ◽  
Binary Compound ◽  
Physical Models ◽  
Recovery Factor ◽  
Recovery Ratio ◽  
Two Dimensional ◽  
Sweep Efficiency ◽  
Pipe Model ◽  
Profile Control ◽  
Surface Active

This article studied the recovery factor of binary compound flooding using surface-active polymer as pre-slug respectively based on the homogeneous sand paced pipe model and on the two dimensional positive rhythm inhomogeneous physical models. According to experiment on homogeneous model, while pre-slug is 0.2PV, the recovery ratio of binary compound flooding using surface-active polymer as pre-slug increases 4.03%, additionally, the pressure increases because of emulsification of surface-active polymer, so surface-active polymer has high oil sweep efficiency; According to experiment on inhomogeneous physical models, because of strong ability of emulsification, plugging and profile control, the recovery ratio of binary compound flooding using surface-active polymer as pre-slug increases 4.82%.

Morphological behavior of compatibilized ternary blends prepared by mechanical mixing

1993 ◽  
Vol 51 ◽  
pp. 1200-1201
Author(s):  
S.D. Smith ◽  
R.J. Spontak ◽  
D.H. Melik ◽  
S.M. Buehler ◽  
K.M. Kerr ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Diblock Copolymers ◽  
Ternary Blends ◽  
Mechanical Mixing ◽  
Design Considerations ◽  
Covalently Bonded ◽  
Homopolymer Blends ◽  
Emulsifying Agent ◽  
Surface Active ◽  
Low Entropy

When blended together, homopolymers A and B will normally macrophase-separate into relatively large (≫1 μm) A-rich and B-rich phases, between which exists poor interfacial adhesion, due to a low entropy of mixing. The size scale of phase separation in such a blend can be reduced, and the extent of interfacial A-B contact and entanglement enhanced, via addition of an emulsifying agent such as an AB diblock copolymer. Diblock copolymers consist of a long sequence of A monomers covalently bonded to a long sequence of B monomers. These materials are surface-active and decrease interfacial tension between immiscible phases much in the same way as do small-molecule surfactants. Previous studies have clearly demonstrated the utility of block copolymers in compatibilizing homopolymer blends and enhancing blend properties such as fracture toughness. It is now recognized that optimization of emulsified ternary blends relies upon design considerations such as sufficient block penetration into a macrophase (to avoid block slip) and prevention of a copolymer multilayer at the A-B interface (to avoid intralayer failure).

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