Results 31 to 40 of about 17,730 (190)

Water Films, Asphaltenes, and Wettability Alteration [PDF]

open access: yesSPE/DOE Improved Oil Recovery Symposium, 1998
Abstract We present a transport model for asphaltene diffusion from an oil/water interface through a water film followed by adsorption at a solid/water interface. Using a Langmuir adsorption isotherm, the effect of asphaltene aqueous solubility <md adsorption constant K on equilibration time are established ...
R. Kaminsky, C.J. Radke
openaire   +3 more sources

The effect of surfactant concentration on nanoparticles surface wettability during wettability alteration of oil-wet carbonate rock

open access: yesJournal of Mechanical Engineering and Sciences, 2021
Previous studies reported that the presence of surfactant increases nanoparticles surface wettability by in-situ surface activation. On the other hand, the excess of surfactant concentration has an inverse effect on particle hydrophobicity by altering ...
Wan Mohd Shaharizuan Mat Latif   +3 more
doaj   +1 more source

Dynamic wettability alteration in immiscible two-phase flow in porous media: Effect on transport properties and critical slowing down [PDF]

open access: yes, 2015
The change in contact angles due to the injection of low salinity water or any other wettability altering agent in an oil-rich porous medium is modeled by a network model of disordered pores transporting two immiscible fluids.
Flovik, Vegard   +2 more
core   +3 more sources

Event-based contact angle measurements inside porous media using time-resolved micro-computed tomography [PDF]

open access: yes, 2020
Hypothesis: Capillary-dominated multiphase flow in porous materials is strongly affected by the pore walls' wettability. Recent micro-computed tomography (mCT) studies found unexpectedly wide contact angle distributions measured on static fluid ...
Bultreys, Tom   +2 more
core   +2 more sources

Evidence, Mechanisms and Improved Understanding of Controlled Salinity Waterflooding Part 1 : Sandstones [PDF]

open access: yes, 2016
Acknowledgements TOTAL are thanked for partial supporting Jackson through the TOTAL Chairs programme at Imperial College London, for supporting Vinogradov through the TOTAL Laboratory for Reservoir Physics at Imperial College London, and for granting ...
Chamerois, M   +3 more
core   +1 more source

Surface Quality and Free Energy Evaluation of s275 Steel by Shot Blasting, Abrasive Water Jet Texturing and Laser Surface Texturing [PDF]

open access: yes, 2020
Surface modification by different technologies prior to joining operations or improving tribological properties is a point of great interest. Improving surface activation by increasing the roughness of the metal is a relationship that is becoming more ...
Batista Ponce, Moisés   +4 more
core   +2 more sources

Effect of Initial Wettability on Performance of Smart Water Flooding in Carbonate Reservoirs—An Experimental Investigation with IOR Implications

open access: yesEnergies, 2018
In this paper, the effects of salinity and active ions on wettability alteration in carbonate reservoirs with different initial wettability conditions with implications in smart water flood design, optimization, and performance analysis are ...
Kholood Al-Nofli   +3 more
doaj   +1 more source

Gas-Wetting Alteration by Fluorochemicals and Its Application for Enhancing Gas Recovery in Gas-Condensate Reservoirs: A Review

open access: yesEnergies, 2020
Gas-wetting alteration is a versatile and effective approach for alleviating liquid-blockage that occurs when the wellbore pressure of a gas-condensate reservoir drops below the dew point. Fluorochemicals are of growing interest in gas-wetting alteration
Jiafeng Jin   +9 more
doaj   +1 more source

Quantum vacuum photon-modes and superhydrophobicity [PDF]

open access: yes, 2015
Nanostructures are commonly used for developing superhydrophobic surfaces. However, available wetting theoretical models ignore the effect of vacuum photon-modes alteration on van der Waals forces and thus on hydrophobicity.
Dellieu, Louis   +3 more
core   +2 more sources

Comprehensive experimental investigation of the effective parameters on stability of silica nanoparticles during low salinity water flooding with minimum scale deposition into sandstone reservoirs

open access: yesScientific Reports, 2022
Recent studies showed the high potential of nanofluids as an enhanced oil recovery (EOR) agent in oil reservoirs. This study aimed to investigate the effects of salts and ions, the salinity of aqueous solution, total dissolved solids (TDS), scale ...
Masoud Bijani   +2 more
doaj   +1 more source

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