Cellulose nanocrystals concentration and oil-water ratio for solid-liquid controllable emulsion polymerization

2021 ◽  
Author(s):  
Miao Tang ◽  
Ziqi Zhu ◽  
Kai Yang ◽  
Pei Yang ◽  
Yue Dong ◽  
...  
Keyword(s):  
Emulsion Polymerization ◽  
Cellulose Nanocrystals ◽  
Oil Water ◽  
Solid Liquid ◽  
Water Ratio

scholarly journals Mechanism of active silica nanofluids based on interface-regulated effect during spontaneous imbibition

2021 ◽  
Author(s):  
Xu-Guang Song ◽  
Ming-Wei Zhao ◽  
Cai-Li Dai ◽  
Xin-Ke Wang ◽  
Wen-Jiao Lv
Keyword(s):  
Contact Angle ◽  
Interfacial Tension ◽  
Oil Recovery ◽  
Dynamic Contact Angle ◽  
Liquid Interface ◽  
Spontaneous Imbibition ◽  
Wettability Alteration ◽  
Low Permeability ◽  
Oil Water ◽  
Solid Liquid

AbstractThe ultra-low permeability reservoir is regarded as an important energy source for oil and gas resource development and is attracting more and more attention. In this work, the active silica nanofluids were prepared by modified active silica nanoparticles and surfactant BSSB-12. The dispersion stability tests showed that the hydraulic radius of nanofluids was 58.59 nm and the zeta potential was − 48.39 mV. The active nanofluids can simultaneously regulate liquid–liquid interface and solid–liquid interface. The nanofluids can reduce the oil/water interfacial tension (IFT) from 23.5 to 6.7 mN/m, and the oil/water/solid contact angle was altered from 42° to 145°. The spontaneous imbibition tests showed that the oil recovery of 0.1 wt% active nanofluids was 20.5% and 8.5% higher than that of 3 wt% NaCl solution and 0.1 wt% BSSB-12 solution. Finally, the effects of nanofluids on dynamic contact angle, dynamic interfacial tension and moduli were studied from the adsorption behavior of nanofluids at solid–liquid and liquid–liquid interface. The oil detaching and transporting are completed by synergistic effect of wettability alteration and interfacial tension reduction. The findings of this study can help in better understanding of active nanofluids for EOR in ultra-low permeability reservoirs.

scholarly journals Patchy rough colloids as Pickering stabilizers

Soft Matter ◽  
2020 ◽  
Vol 16 (34) ◽  
pp. 8002-8012 ◽  
Author(s):  
Hannah M. H. Weijgertze ◽  
Willem K. Kegel ◽  
Michele Zanini
Keyword(s):  
Shear Rate ◽  
Particle Type ◽  
Oil Water ◽  
Water Ratio

The use of rough and heterogeneous colloids as Pickering stabilizers fundamentally alters the properties of particle stabilized emulsions. Systematic variations in the emulsification shear rate, oil/water ratio and particle type reveal the influence of particle heterogeneity on the formation and formulation of emulsions.

Measurement of Oil-Water Ratio and Formation Porosity Using Dielectric Spectroscopy in Borehole Environments

2014 ◽  
Author(s):  
Timofey Eltsov ◽  
Vitaly Dorovsky ◽  
Nikita Golikov ◽  
Leonty Tabarovsky ◽  
Michael Epov
Keyword(s):  
Dielectric Spectroscopy ◽  
Oil Water ◽  
Formation Porosity ◽  
Water Ratio

Research on Measurement Method of Oil-Water Interface Based on Oscillation Frequency

2011 ◽  
Vol 317-319 ◽  
pp. 1026-1030
Author(s):  
Pei Guo Hou ◽  
Xiang Zheng Xiao ◽  
Zhong Dong Wang
Keyword(s):  
Measurement Method ◽  
Present Situation ◽  
High Water ◽  
Water Interface ◽  
Capacitive Sensing ◽  
New Type ◽  
Simple Interface ◽  
Oil Water ◽  
Control Water ◽  
Water Ratio

At the view of the present situation of the oil-water interface measurement, all sorts of measurement method can not eliminate the interference of temperature and hang oil. In order to control water ratio of purification oil at the output, simple interface detector cannot have satisfy the actual needs. A key contribution of this paper is to propose a solution based on a new type of sensor head and a test of new solution to the problem of capacitive sensing at high water ratio. A LC oscillation circuits is used to detect the variation of capacitance, overcoming the influence of the hang oil and the temperature.

scholarly journals Intensification of Destruction Process of Sustained Emulsions Formed in Local Oil Sludge

2020 ◽  
Vol 9 (3) ◽  
pp. 1375-1378
Keyword(s):  
Physical Properties ◽  
Heavy Oil ◽  
Gas Condensate ◽  
Oil Sludge ◽  
Rheological Parameters ◽  
Destruction Process ◽  
Dispersed Systems ◽  
Oil Water ◽  
Newtonian Liquids ◽  
Water Ratio

Stable emulsions contained in oil sludge make it difficult to conduct. The physical properties of oil sludge usually vary widely and depend on the oil's own viscosity, temperature, oil-water ratio. Therefore, emulsions being dispersed systems under certain conditions have specific properties i.e. they are non-Newtonian liquids. Heavy oil and oil sludge are diluted with hydrocarbons, more often, gas condensate, which reduces the viscosity, density and other rheological parameters of high-sulfur oil.

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