Results 71 to 80 of about 8,294 (210)

Subsurface Hydrocarbon Biodegradation in the Context of Microbial Habitability and Hydrogeologic, Thermal, and Geologic Evolution of the Colorado Plateau

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Subsurface microbial ecosystems associated with hydrocarbon reservoirs are shaped by temperature, salinity, redox gradients, and fluid flow. However, the drivers of microbial activity and hydrocarbon biodegradation over geologic timescales remain poorly constrained.
Meera P. Shah, Jennifer McIntosh, Peter Reiners, Lydia Bailey, Bradley S. Stevenson, Grant Ferguson, Ji‐Hyun Kim, Henrik Drake, Magdalena R. Osburn   +8 more
wiley   +1 more source

Asphaltenes and asphalts /

, 1994
This is the first volume of a two-volume set of critical reviews of many aspects of both asphaltenes and asphalts and their interrelationship. Asphaltene is invariably present in asphalt or bitumen and other fossil fuel-derived liquids such as coal tar ...
Yen, Teh Fu,1927-2010., Chilingar, George V.   +1 more
core  

Graphitic carbon nanoparticles from asphaltenes

, 2011
We report preliminary studies on the preparation of carbon nanoparticles (CNPs) of 3c20 nm in diameter derived from asphaltenes under mild conditions.
Danumah, Christophe, Myles, Andrew J., Fenniri, Hicham, Hicham Fenniri, Andrew J. Myles, Christophe Danumah   +5 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

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

Advanced Functional Materials, Volume 36, Issue 75, 17 September 2026.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao, Dongfang Lv, Chang Liu, Changxu Wu, Yifei Liu, Caili Dai, Huazhou Li   +6 more
wiley   +1 more source

A Preliminary Study on Pyrolysis and Gasification of Asphaltenes and Coal-Asphaltenes Slurry in Entrained Flow Reactor

, 2012
The aim of this work is to study pyrolysis of coal-asphaltenes slurry in an atmospheric entrained flow reactor. Athabasca asphaltenes and Genesee coal, both from Alberta in Canada, were selected as the feedstock. Char characteristics and the structure of
Berahman, Behnam
core   +1 more source

Quinoline impact on composition, structure and aggregative stability of asphaltenes from heavy oil of different chemical types

Известия Томского политехнического университета: Инжиниринг георесурсов
Relevance. The need to establish the true mechanisms of the formation of supramolecular structures in petroleum dispersed systems. It is important to identify the role of individual functional groups in asphaltene aggregation.
Dmitry S. Korneev, Alina S. Savchenko, Roman I. Butyrin, Mikhail G. Kulkov, Galina S. Pevneva   +4 more
doaj   +1 more source

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

Effect of cavitation on the structural characteristics of oil asphaltenes

Тонкие химические технологии
Objectives. To investigate the influence of hydrodynamic cavitation on the group hydrocarbon composition of straight-run fuel oil and the structural characteristics of its asphaltenes.Methods.
D. V. Nikishin, B. V. Peshnev, A. I. Nikolaev   +2 more
doaj   +1 more source

An Evaluation of the Delayed-Coking Product Yield of Heavy Feedstocks Using Asphaltene Content and Carbon Residue Évaluation du rendement en produit de cokéfaction différée de pétrole lourd à l'aide de la teneur an asphaltènes et du résidu de coke

Oil & Gas Science and Technology, 2006
Six residua from different crude oils were evaluated for composition and carbon residue forming tendencies. The whole residua were evaluated for elemental composition, trace metals content, carbon residue, and specific gravity.
Schabron J. F., Speight J. G.
doaj   +1 more source