Results 41 to 50 of about 7,517 (225)

Investigation of the influences of asphaltene deposition on oilfield development using reservoir simulation

open access: yesPetroleum Exploration and Development, 2022
This paper investigates the deposition of asphaltenes in the porous medium of the studied field in Russia and predicts production profiles based on uncertainty evaluation.
D S TANANYKHIN   +3 more
doaj   +1 more source

Asphaltene Precipitation Investigation Using a Screening Techniques for Crude Oil Sample from the Nahr-Umr Formation/Halfaya Oil Field

open access: yesIraqi Journal of Chemical and Petroleum Engineering, 2023
Many oil and gas processes, including oil recovery, oil transportation, and petroleum processing, are negatively impacted by the precipitation and deposition of asphaltene. Screening methods for determining the stability of asphaltenes in crude oil have
Moammed A. Ahmed   +2 more
doaj   +1 more source

Characterization of Asphaltene Deposition Behavior in Diluted Heavy Oil under High-Pressure Conditions

open access: yesEnergies, 2023
Some oil wells in the Tahe oilfield have been reported to produce extremely heavy oil due to asphaltene deposition. To enhance the flow of crude oil through the wellbore, engineers adopted the use of light oil from nearby wells to dissolve the heavy ...
Zuguo Yang   +6 more
doaj   +1 more source

Asphaltene-Derived Graphene Quantum Dots for Controllable Coatings on Glass, Fabrics, and Aerogels [PDF]

open access: yes
Graphene quantum dots (GQDs) derived from natural asphaltene byproducts can produce controlled hydrophobic or hydrophilic interfaces on glass, fabrics, and aerogels.
Alkiviathes Meldrum (6021191)   +6 more
core   +1 more source

Aggregation thermodynamics for asphaltene precipitation [PDF]

open access: yes, 2022
Asphaltene precipitation has been a major concern for petroleum industry due to its adverse effect upon upstream production, midstream transportation, and downstream refining.
Islam, Md Rashedul
core   +1 more source

The role of direct asphaltene inhibitors on asphaltene stabilization during gas injection [PDF]

open access: yes, 2020
There are a large number of investigations, which evaluate the impact of the liquid-based inhibitors on the asphaltene stabilization. In those studies, a specific volume of inhibitor was added to the oil sample and the asphaltene precipitation is then ...
Gandomkar, Asghar, Nasriani, Hamid Reza
core   +1 more source

Molecular Dynamics Simulation of Self-Aggregation of Asphaltenes at an Oil/Water Interface: Formation and Destruction of the Asphaltene Protective Film [PDF]

open access: yes, 2014
It is well known that asphaltene molecules play a significant role in stabilizing emulsions of water in crude oil or diluted bitumen solutions: Molecular dynamics simulations were employed to investigate the aggregation anti orientation behaviors of ...
Zhao YP(赵亚溥)   +3 more
core   +1 more source

Modeling and Scaling of the Viscosity of Suspensions of Asphaltene Nanoaggregates

open access: yesEnergies, 2017
The scaling and modeling of the viscosity of suspensions of asphaltene nanoaggregates is carried out successfully taking into consideration the solvation and clustering of nanoaggragates, and the jamming of the suspension at the glass transition volume ...
Rajinder Pal
doaj   +1 more source

Experimental Investigation of Asphaltene Induced Permeability Reduction [PDF]

open access: yes, 2010
CO2 injection is one of efficient enhanced oil recovery (EOR) methods among gas flooding, however, asphaltene precipitation during CO2 injection might lead to production loss and reduced efficiency. To understand the mechanism of asphaltene deposition is
Yoshihisa Hayashi, Hiroshi Okabe
core   +1 more source

Isolation of Asphaltene-Degrading Bacteria from Sludge Oil

open access: yesMakara Journal of Science, 2015
Sludge oil contains 30%–50% hydrocarbon fractions that comprise saturated fractions, aromatics, resins, and asphaltene. Asphaltene fraction is the most persistent fraction.
Pingkan Aditiawati   +1 more
doaj   +1 more source

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