Results 111 to 120 of about 21,307 (276)
Química Nova, 2016 Asphaltenes are blamed for various problems in the petroleum industry, especially formation of solid deposits and stabilization of water-in-oil emulsions.
Silas R. Ferreira +5 more
doaj +1 more source
Visbreaking of an asphaltenic coal residue
Fuel, 1995 A residue from deasphalting of liquids obtained by direct liquefaction of a Spanish subbituminous coal was processed by thermal treatment. This residue is rich in asphaltenes which do not undergo cracking easily and are coke precursors in thermal cracking.
Benito, Ana M. +3 more
openaire +3 more sources
Scientific ReportsLong-time contact of heavy crude oil with rock leads to an adsorption phenomenon, which causes the rock surface to become oil-wet and appears as a barrier to the fluid flow in the porous media.
Jaber Taheri-Shakib +4 more
doaj +1 more source
Revealing crucial effects of reservoir environment and hydrocarbon fractions on fluid behaviour in kaolinite pores [PDF]
Interactions of hydrocarbons (HCs) and clay surfaces are responsible for fluid behaviour within shale reservoirs. These interactions are affected by the diversity of HC components and the variations in environmental conditions. This study examines the interactions between kaolinite clay, featuring two distinct basal surfaces, and an array of HCs.
arxiv +1 more source
, 2008 This article has been published in an open access journal and is also available at http://www.benthamscience.com/open/totherj/articles/V002/13TOTHERJ.pdfInternational audienceThe Scott-Magat polymer theory, which assumes that polymers have heterogeneous ...
Mohammadi, Amir H., Richon, Dominique
core +1 more source
Cooee bitumen: Dynamics and structure of bitumen- water mixtures [PDF]
arXiv, 2016 Systems of Cooee bitumen and water up to 4 mass % are studied by molecular dynamics simula- tions. The cohesive energy density of the system is shown to decrease with an increasing water content. This decrease is due mainly to an increase in potential energy which is not high enough to counterbalance the increase in volume due to the addition of water.
arxiv
Formation, Effect and Prevention of Asphaltene Sludges During Stimulation Treatments [PDF]
, 1965 Edward W. Moore +2 more
openalex +1 more source
Aspects of asphaltene aggregation obtained from coarse-grained molecular modeling
, 2015 We have performed a molecular-simulation-based study to explore some of the underlying mechanisms of asphaltene aggregation. The daunting complexity of the crude oil + asphaltene system precludes any type of meaningful molecular simulation unless some ...
Galindo, A +6 more
core +2 more sources
A Solution Model for Predicting Asphaltene Precipitation [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2014 Formation of asphaltene deposition during oil production, processing and synthesis is known as a fundamental problem of petroleum reservoir worldwide. Asphaltene is a petroleum fraction that can lead to increasing the operating costs in these industries.
Mohammad Yazdizadeh +2 more
doaj