Results 81 to 90 of about 24,626 (266)

Influence of the Ce4+/Ce3+ Redox-Couple on the Cyclic Regeneration for Adsorptive and Catalytic Performance of NiO-PdO/CeO2±δ Nanoparticles for n-C7 Asphaltene Steam Gasification

open access: yesNanomaterials, 2019
The main objective of this study is to evaluate the regenerative effect of functionalized CeO2±δ nanoparticles with a mass fraction of 0.89% of NiO and 1.1% of PdO in adsorption and subsequent decomposition of n-C7 asphaltenes in steam gasification ...
Oscar E. Medina   +4 more
semanticscholar   +1 more source

Screening of inhibitors for remediation of asphaltene deposits: Experimental and modeling study

open access: yesPetroleum, 2018
One of the most severe problems during production from heavy crude oil reservoirs is the formation of asphaltene precipitation and as a result deposition in the tubing, surface facilities and near wellbore region which causes oil production and ...
Mehdi Madhi   +2 more
doaj   +1 more source

Droplet Coalescence and Spontaneous Emulsification in the Presence of Asphaltene Adsorption.

open access: yesLangmuir, 2017
In a refinery, undesired high levels of salt concentration in crude oils are reduced by the contact of water with crude oils, where an emulsion is formed.
S. Bochner de Araujo   +3 more
semanticscholar   +1 more source

Prediction of the Gas Injection Effect on the Asphaltene Phase Envelope

open access: yesOil & Gas Science and Technology, 2015
Asphaltene instability may occur when pressure, temperature and compositional variations affect the reservoir oil. Permeability reduction, wettability alteration, and plugging of wells and flow lines are the consequences of this phenomenon. Therefore, it
Bahrami Peyman   +3 more
doaj   +1 more source

Enhanced PFAS adsorption with N-doped porous carbon beads from oil-sand asphaltene

open access: hybrid, 2023
Bożena Czech   +7 more
openalex   +1 more source

Influencing mechanisms of solid-phase asphaltene precipitation in crude oil of Yongjin Oil Field, Junggar Basin

open access: yesShiyou shiyan dizhi
Solid-phase asphaltene precipitation and deposition, commonly occurring during reservoir development, lead to reservoir damage and production well blockage, seriously affecting crude oil exploitation and reducing economic efficiency.
Yang YANG   +6 more
doaj   +1 more source

Investigation of Asphaltene Stability in the Iranian Crude Oils [PDF]

open access: yesIranian Journal of Chemical Engineering, 2008
The influence of different factors on the asphaltene stability in three iranian crude oils was evaluated. Compositional studies and structural characterization of resins and asphaltenes were carried out in order to study a possible relationship between ...
doaj  

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