Results 61 to 70 of about 24,626 (266)

A review on methods of determining onset of asphaltene precipitation

Journal of Petroleum Exploration and Production Technology, 2018
Oil industry suffers from flow assurance problems that occur both in upstream and downstream operations. One of the common flow assurance issues arises from precipitation and deposition of asphaltenes in various locations along the oil production path ...
A. Soleymanzadeh, M. Yousefi, S. Kord, O. Mohammadzadeh   +3 more
semanticscholar   +1 more source

Multivariate Optimization of Column Liquid Chromatography for the Separation of Saturated, Aromatic, and Acidic Biomarkers in Petroleum and Rock Extracts

Journal of Chemometrics, Volume 40, Issue 2, February 2026.
ABSTRACT Conventional geochemical biomarkers include saturated, aromatic, and carboxylic acid compounds. Saturated and aromatic biomarkers, however, form the foundation of many geochemical studies because of their abundance and intrinsic significance.
Alek A. C. de Sousa, Wandreson dos S. Sousa, Alexandre A. de Souza, Pedro H. B. Lima, Henrique A. Lopes, Wilkins O. de Barros, Benedito B. Farias Filho, Sidney G. de Lima   +7 more
wiley   +1 more source

Experimental methods in chemical engineering: Electrospinning

The Canadian Journal of Chemical Engineering, Volume 104, Issue 2, Page 556-568, February 2026.
Abstract Electrospinning produces micro‐ and nanofibres by forcing a polymeric solution through a fine needle in an electric field that produces a filament that accumulates onto a collector plate. The fibre morphology depends on solution properties, distance between needle and plate, feed rate, and electric field intensity.
M. Olga Guerrero‐Pérez, Tugce N. Eran, Gregory S. Patience   +2 more
wiley   +1 more source

Computer Simulation of Asphaltenes

Petroleum Chemistry, 2018
The review describes theoretical approaches based on computer simulations at various levels of details (from quantum chemical calculations to atomistic and coarse-grained models) to study asphaltenes and systems containing asphaltenes. The used methods are described, their advantages and disadvantages are discussed in terms of computational costs and ...
S. V. Lyulin, A. D. Glova, S. G. Falkovich, V. A. Ivanov, V. M. Nazarychev, A. V. Lyulin, S. V. Larin, S. V. Antonov, P. Ganan, J. M. Kenny   +9 more
openaire   +2 more sources

Bitumen Emulsion—Mineral Surface Interactions: An NMR Study on the Interface Layer Composition

Magnetic Resonance in Chemistry, Volume 64, Issue 2, Page 170-178, February 2026.
We describe a 1H NMR approach to study the interface layer formed by a specified bitumen emulsion in the presence of non‐magnetic as well as magnetic minerals. This approach is based on the consecutive flushing off “bulky” components of the bitumen emulsion and the following extraction of the surface layer material, which can then be analyzed by NMR ...
Andrei Filippov, Hilde Soenen, Oleg N. Antzutkin   +2 more
wiley   +1 more source

Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald, A. B. Frank, D. Birgel, K. Senger, T. Mosociova, Y. Pei, B. Beaty, L. G. Tarhan, F. Galasso, M. A. Gómez Correa, S. E. Grasby, U. Struck, D. Yuan, R. Steinkrauss, J. Gliwa, N. Lahajnar, J. Peckmann, W. J. Foster   +17 more
wiley   +1 more source

Evaluation of the Influence of Antifoam Formulations on Asphaltene Aggregates Using AFM and SEM‐EDS

Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
ABSTRACT Asphaltenes, naturally occurring surfactants in crude oil play a pivotal role in stabilizing oily foams during primary oil processing. Accordingly, understanding how antifoam formulations influence asphaltene aggregation is essential. This study investigates the effect of polydimethylsiloxane (PDMS) with varying molar masses on asphaltene ...
Mariana Teixeira Mendes, Andressa Oliveira dos Santos, Rafael Farias Perez, Osvaldo Karnitz Junior, Claudia Regina Elias Mansur   +4 more
wiley   +1 more source

Influence of asphaltene precipitation on development effect of typical heavy oil reservoirs in eastern South China Sea

Youqi dizhi yu caishoulu
During the development of heavy oil reservoirs in the eastern South China Sea， asphaltene precipitation can cause blockages in reservoir throats， wellbores， and pipelines， leading to a decrease in the productivity of oil wells.
TU Yi, DAI Jianwen, YANG Jiao, WANG Yahui, MIAO Yun, ZHONG Xulin   +5 more
doaj   +1 more source

Review of Flash Joule Heating for the Synthesis of Graphene and Other Functional Carbon Materials

Carbon Energy, Volume 8, Issue 1, January 2026.
ABSTRACT Flash Joule heating (FJH), as a high‐efficiency and low‐energy consumption technology for advanced materials synthesis, has shown significant potential in the synthesis of graphene and other functional carbon materials. Based on the Joule effect, the solid carbon sources can be rapidly heated to ultra‐high temperatures (> 3000 K) through ...
Zhiwu Tan, Faisal Mahmood, Mengzhen Tian, Yimeng Li, Qingfa Zhang, Zhong Ma, Mingfeng Wang, Weiwei Liu, Shihong Zhang, Haiping Yang, Bin Li   +10 more
wiley   +1 more source

Effects of hydrophobic CaO and SiO2 nanoparticles on Asphaltene Precipitation Envelope (APE): an experimental and modeling approach

Oil & Gas Science and Technology, 2018
An experimental and modeling approach was developed in this research to investigate the effects of CO2, new synthesized CaO and commercial SiO2 nanoparticle concentrations on the Asphaltene Precipitation Envelope (APE).
Ahmadi Yaser, Aminshahidy Babak
doaj   +1 more source