scholarly journals Effect of Composition and Interfacial Tension on the Rheology and Morphology of Heavy Oil-In-Water Emulsions

ACS Omega ◽  
2020 ◽  
Vol 5 (27) ◽  
pp. 16460-16469
Author(s):  
Marianna P. Arinina ◽  
Kirill V. Zuev ◽  
Valery G. Kulichikhin ◽  
Alexander Ya. Malkin
Keyword(s):  
Interfacial Tension ◽  
Heavy Oil ◽  
Oil In Water

Pore-Scale Transport Mechanisms and Macroscopic Displacement Effects of In-Situ Oil-in-Water Emulsions in Porous Media

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Chuan Lu ◽  
Wei Zhao ◽  
Yongge Liu ◽  
Xiaohu Dong
Keyword(s):  
Porous Media ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Mobility Control ◽  
Pore Scale ◽  
Sweep Efficiency ◽  
Emulsion Droplets ◽  
Oil In Water ◽  
Retention Volumes

Oil-in-water (O/W) emulsions are expected to be formed in the process of surfactant flooding for heavy oil reservoirs in order to strengthen the fluidity of heavy oil and enhance oil recovery. However, there is still a lack of detailed understanding of mechanisms and effects involved in the flow of O/W emulsions in porous media. In this study, a pore-scale transparent model packed with glass beads was first used to investigate the transport and retention mechanisms of in situ generated O/W emulsions. Then, a double-sandpack model with different permeabilities was used to further study the effect of in situ formed O/W emulsions on the improvement of sweep efficiency and oil recovery. The pore-scale visualization experiment presented an in situ emulsification process. The in situ formed O/W emulsions could absorb to the surface of pore-throats, and plug pore-throats through mechanisms of capture-plugging (by a single emulsion droplet) and superposition-plugging or annulus-plugging (by multiple emulsion droplets). The double-sandpack experiments proved that the in situ formed O/W emulsion droplets were beneficial for the mobility control in the high permeability sandpack and the oil recovery enhancement in the low permeability sandpack. The size distribution of the produced emulsions proved that larger pressures were capable to displace larger O/W emulsion droplets out of the pore-throat and reduce their retention volumes.

Heavy oil fraction removal from sand using hydrotropes containing oil-in-water microemulsions

2004 ◽  
pp. 288-292 ◽  
Author(s):  
M. C. K. Oliveira ◽  
E. F. Lucas ◽  
G. González ◽  
J. F. Oliveira
Keyword(s):  
Heavy Oil ◽  
Oil Fraction ◽  
Oil In Water

Indoor Study of Viscosity Reducer for Thickened Oil of Huancai

2012 ◽  
Vol 268-270 ◽  
pp. 547-550
Author(s):  
Qing Wang Liu ◽  
Xin Wang ◽  
Zhen Zhong Fan ◽  
Jiao Wang ◽  
Rui Gao ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Oil Recovery ◽  
Heavy Oil ◽  
High Viscosity ◽  
Oil Field ◽  
Viscosity Reduction ◽  
Oil Viscosity ◽  
Low Viscosity ◽  
Viscosity Reducer ◽  
Oil Water

Liaohe oil field block 58 for Huancai, the efficiency of production of thickened oil is low, and the efficiency of displacement is worse, likely to cause other issues. Researching and developing an type of Heavy Oil Viscosity Reducer for exploiting. The high viscosity of W/O emulsion changed into low viscosity O/W emulsion to facilitate recovery, enhanced oil recovery. Through the experiment determine the viscosity properties of Heavy Oil Viscosity Reducer. The oil/water interfacial tension is lower than 0.0031mN•m-1, salt-resisting is good. The efficiency of viscosity reduction is higher than 90%, and also good at 180°C.

Demulsification of heavy oil-in-water emulsions by reduced graphene oxide nanosheets

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106297-106307 ◽  
Author(s):  
Huanjiang Wang ◽  
Juan Liu ◽  
Haiyan Xu ◽  
Zhanwei Ma ◽  
Weihong Jia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Heavy Oil ◽  
Chemical Structure ◽  
Graphene Oxide Nanosheets ◽  
Oil In Water ◽  
Reduced Graphene ◽  
The Relationship

The purpose of this work is to investigate the relationship between the chemical structure of the GO materials and the demulsification performance.

Impact of Pre-equilibration on the Assessment Methodology of Interfacial Tension Measured between Aqueous and Heavy Oil Phases

2011 ◽  
Vol 25 (6) ◽  
pp. 2542-2550 ◽  
Author(s):  
M. Sharath Chandra ◽  
Jose Zacharia ◽  
Geza Horvath-Szabo
Keyword(s):  
Interfacial Tension ◽  
Heavy Oil ◽  
Assessment Methodology
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