Results 81 to 90 of about 20,919 (276)

Influencia de asfaltenos y resinas en la viscosidad de petróleos bituminosos utilizables como pinturas asfálticas de imprimación [PDF]

, 2006
Los crudos extrapesados procedentes del área Machete (Venezuela) son materiales de consistencia blanda o fluida, por lo que se salen del campo en el que normalmente se aplica el ensayo de penetración a productos asfálticos según el mé- todo ASTM D-5 (
Alejandre Sánchez, Francisco Javier, Bencomo, M.R., Márquez Martínez, Gonzalo   +2 more
core   +2 more sources

Removal of petroleum asphaltenes by improved activity of NiO nanoparticles supported on green AlPO-5 zeolite: Process optimization and adsorption isotherm

Petroleum, 2020
Asphaltenes removal enhances the quality of the oil and facilitates the processing. In the present work, a NiO/AlPO-5 nanocomposite using green TMG was synthesized as a particular adsorbent for asphaltenes removal. NiO/AlPO-5 was characterized using FTIR,
Majid Mohammadi, Mehdi Sedighi, Meysam Hemati   +2 more
doaj  

Optimization of the Load of Transition Metal Oxides (Fe2O3, Co3O4, NiO and/or PdO) onto CeO2 Nanoparticles in Catalytic Steam Decomposition of n-C7 Asphaltenes at Low Temperatures

Nanomaterials, 2019
The main objective of this work is the catalyst optimization of Fe2O3-, Co3O4-, NiO- and/or PdO- (transition element oxides—TEO) functionalized CeO2 nanoparticles to maximize the conversion of asphaltenes under isothermal conditions at low ...
Oscar E. Medina, Jaime Gallego, Daniela Arias-Madrid, Farid B. Cortés, Camilo A. Franco   +4 more
doaj   +1 more source

Separation and characterization of asphaltenic subfractions [PDF]

Química Nova, 2012
The structure of the various asphaltenic subfractions found in crude oil was evaluated. For this purpose, C5 asphaltenes were extracted from an asphaltic residue using n-pentane as the flocculant solvent. The different subfractions were isolated from the C5 asphaltenes by the difference in solubility in different solvents.
Honse, Siller O., Ferreira, Silas R., Mansur, Claudia R. E., Lucas, Elizabete F., González, Gaspar   +4 more
openaire   +5 more sources

Evaluating the feasibility of using a rapeseed oil‐derived anionic polymeric surfactant for enhanced oil recovery from carbonate/sandstone composite reservoirs

The Canadian Journal of Chemical Engineering, Volume 103, Issue 7, Page 3071-3091, July 2025.
The experimental procedure for evaluating the rapeseed oil‐based polymeric surfactant in enhanced oil recovery. Abstract This study aims to investigate enhanced oil recovery from carbonate/sandstone composite (CSC) reservoirs using a negative‐charged rapeseed oil‐based polymeric surfactant.
Iman Nowrouzi, Amir H. Mohammadi, Abbas Khaksar Manshad   +2 more
wiley   +1 more source

Impact of Flow Rate and Wettability on the Determination of Relative Permeability from Core Floods [PDF]

, 2010
Imperial Users ...
Lau, Ei Sheen, Lau, Ei Sheen
core  

Composition of Pre-ozonated High-Sulfur Natural Bitumen Cracking Products [PDF]

, 2015
The results analysis of fractional and material composition of the cracking products of Ashalchinskoye and Karmalskoye bitumen deposits was presented in this work.
Dombrovskaya, A. S., Golovko, A. K., Krivtsov, E. B., Krivtsova, Nadezhda Igorevna, Sviridenko, N. N.   +4 more
core   +1 more source

Study of Asphaltene Structure Precipitated from Oil Sands

Eurasian Chemico-Technological Journal, 2013
In the paper microscopic structure and physicochemical characteristics of asphaltenes were investigated. Asphaltene was precipitated from natural bitumen of oil sand of Munaily-Mola deposit using organic solvent of petroleum ether.
F. R. Sultanov, Ye. Tileuberdi, Ye. K. Ongarbayev, Z. A. Mansurov, K. A. Khasseinov, B. K. Tuleutaev, F. Behrendt   +6 more
doaj   +1 more source

Practical aspects of multiphase slug frequency: An overview

The Canadian Journal of Chemical Engineering, Volume 103, Issue 6, Page 2880-2894, June 2025.
Abstract Slug frequency, the number of liquid slugs passing through a point per unit of time, is an intrinsic parameter that is used to characterize multiphase slug flows in pipes. In this review we discuss practical aspects of slug frequency for industrial purposes from an examination of published literature and available experimental data. The review
Abderraouf Arabi, Ronaldo Luis Höhn, Jordi Pallares, Youssef Stiriba   +3 more
wiley   +1 more source

Deposition of colloidal asphaltene in capillary flow: Experiments and mesoscopic simulations [PDF]

, 2008
The aggregation and deposition of colloidal asphaltene in reservoir rock is a significant problem in the oil industry. To obtain a fundamental understanding of this phenomenon, we have studied the deposition and aggregation of colloidal asphaltene in ...
Boek, ES, Crawshaw, JP, Ladva, HK, Padding, JT   +3 more
core   +2 more sources