Results 71 to 80 of about 18,552 (210)

Etude par simulation en laboratoire de l'opération de viscoréduction Laboratory Simulation of the Visbreaking Process

Oil & Gas Science and Technology, 2006
Une simulation par pyrolyse du traitement de viscoréduction est mise au point afin de comprendre le comportement individuel des quatre grandes classes de composés formant les résidus lourds. Après détermination des conditions opératoires, chaque famille (
Favre A., Boulet R., Behar F.
doaj   +1 more source

AVALIAÇÃO DE ASFALTENOS PRECIPITADOS EM DIFERENTES CONDIÇÕES DE COMPOSIÇÃO, TEMPERATURA E PRESSÃO

Química Nova
Asphaltenes are a heavy fraction of petroleum with the ability for self-association, a phenomenon that can occur spontaneously in the reservoirs or in any of the various stages of production and processing, depending on variations in pressure ...
Lyzette Gonçalves Moraes de Moura, Paulo de Tarso Vieira e Rosa   +1 more
doaj   +1 more source

Study of asphaltene reaggregation in toluene/heptane mixture by dynamic and static light scattering

Petroleum Research
This paper presents the study of the effect of multiple ultrasonic impacts on submicron asphaltene aggregates in a toluene/heptane solution, conducted with dynamic light scattering technique.
Vladimir N. Kuryakov
doaj   +1 more source

Chemical modification of cobalt ferrite nanoparticles with possible application as asphaltene flocculant agent

Materials Research, 2013
Asphaltenes can cause enormous losses in the oil industry, because they are soluble only in aromatic solvents. Therefore, they must be removed from the petroleum before it is refined, using flocculant agents. Aiming to find new materials that can work as
G. E. Oliveira, J. E. S. Clarindo, K. S. E. Santo, F. G. Souza Jr.   +3 more
doaj  

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

Iranian 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  

Effects of the N, O, and S heteroatoms on the adsorption and desorption of asphaltenes on silica surface: A molecular dynamics simulation

Fuel, 2019

semanticscholar   +1 more source

A novel multidisciplinary approach for crude oil classification based on structural characteristics of asphaltenes. [PDF]

Sci Rep
Sarafdokht H, Rabbani AR, Asemani M.
europepmc   +1 more source

Study on the Isolated Asphaltene Thermal Cracking from an Unconventional Oil Using Diverse Estimating Arrhenius Parameter Approaches. [PDF]

Molecules
Félix G, Tirado A, Varfolomeev MA, Lugo-Medina E, Soto-Robles CA, Ancheyta J.   +5 more
europepmc   +1 more source

Developing a straightforward and robust approach for investigating reservoir compartmentalization based on chemical composition heterogeneities. [PDF]

Sci Rep
Asemani M, Kouhanjani MHS, Rabbani AR.
europepmc   +1 more source

Experimental investigation of divalent ions and CTAB effects on heavy oil emulsion stability in carbonate reservoirs. [PDF]

Sci Rep
Mansouri AT, Mahdavi MS, Dehaghani AHS.
europepmc   +1 more source