Results 41 to 50 of about 2,348 (179)

Prediction of asphaltene precipitation upon injection of various gases at near-wellbore conditions: A simulation study using PC-SAFT EoS

Oil & Gas Science and Technology, 2019
The depletion of oil reservoirs and increased global oil demand have given impetus to employ various secondary and tertiary oil recovery methods. Gas injection is widely used in both secondary and tertiary modes, though the major problem associated with ...
Mahmoudvand Saba, Shahsavani Behnam, Parsaei Rafat, Malayeri Mohammad Reza   +3 more
doaj   +1 more source

Dynamic accelerated solvent extraction for faster oil sands oil, water, and solids determination and solids cleaning

The Canadian Journal of Chemical Engineering, Volume 104, Issue 4, Page 2020-2032, April 2026.
25 g of oil sands extracted by dynamic accelerated solvent extraction, yielding 177 mL of bitumen–toluene extract and clean dried solids in approximately 12 min. Abstract Determining the oil, water, and solids (OWS) contents of oil sand is essential to many aspects of the oil sands industry including mine planning, optimization of extraction processes,
Ceanna Ting‐Yan Cheung, Matthew Ripmeester   +1 more
wiley   +1 more source

Supercritical water deasphalting and desulphurization of heavy fuel oil with comprehensive molecular‐level analysis and techno‐economic analysis

The Canadian Journal of Chemical Engineering, Volume 104, Issue 4, Page 1727-1742, April 2026.
Supercritical water deasphalting. Abstract The removal of sulphur from heavy fuel oil (HFO) is essential to address environmental concerns and comply with the stringent regulations imposed by the International Maritime Organization (IMO) in 2020. Previously, the acceptable limit for sulphur was 3.5 wt.%, but it was recently changed to 0.5 wt.%.
Biswajit Saha, Sundaramurthy Vedachalam, Nathalie Baquerizo, Ajay K. Dalai, Aiping Chen, Saumitra Saxena, Bassam Dally   +6 more
wiley   +1 more source

An Experimental Investigation and Prediction of Asphaltene Deposition during Laminar Flow in the Pipes Using a Heat Transfer Approach [PDF]

Iranian Journal of Oil & Gas Science and Technology, 2017
In this study, asphaltene deposition from crude oil has experimentally and theoretically been studied using a test loop and an accurate temperature monitoring during a laminar flow.
Farhad Salimi, Shahab Ayatollahi, Mohsen Vafaie Seftie   +2 more
doaj   +1 more source

Model molecules mimicking asphaltenes [PDF]

Advances in Colloid and Interface Science, 2015
Asphalthenes are typically defined as the fraction of petroleum insoluble in n-alkanes (typically heptane, but also hexane or pentane) but soluble in toluene. This fraction causes problems of emulsion formation and deposition/precipitation during crude oil production, processing and transport.
Sjøblom, Johan, Simon, Sebastien Charles, Xu, Zhenghe   +2 more
openaire   +3 more sources

Geochemical and Seismic Constraints on the Role of Mud Diapirs in Petroleum Migration and Accumulation in the Recôncavo Basin, NE Brazil

Journal of Petroleum Geology, Volume 49, Issue 2, Page 433-447, April 2026.
ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos, Egberto Pereira, Lucas Pinto Heckert Bastos, René Rodrigues   +3 more
wiley   +1 more source

Synthesis of Coal Tar‐Based Hypercrosslinked Polymers via Friedel‐Crafts Alkylation: An Efficient Way to Access Carbon Electrode Material for Supercapacitors

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 2, March 2026.
Liquid coal tar (CT) is synthesized into hypercrosslinked polymers (HCPs) via the Friedel–Crafts alkylation, followed by oxidation‐carbonization to form disordered microporous carbon. The resulting CF2CT exhibits a high three‐electrode specific capacitance of 342 F g−1 at 1 A g−1, and the assembled symmetric supercapacitor illuminates a light sign ...
Zhichao Ren, Yanchun Pei, Xueyan Wu, Yan Lv, Rui Xue, Jixi Guo, Xiaogang Zhang   +6 more
wiley   +1 more source

Critical Review on the Molecular Behavior of Surfactants at the Oil–Water Interface During Oil Displacement

Energy Science &Engineering, Volume 14, Issue 3, Page 1626-1662, March 2026.
This review systematically explores the molecular behavior of diverse surfactants (anionic, cationic, nonionic, amphoteric) at the oil–water interface through molecular dynamics simulations. It highlights their roles in reducing interfacial tension, altering interfacial structure, and enhancing oil recovery efficiency.
Zhaowei Hou, Wenchao Jiang, Xiaolin Wu, Jian Gai, Liqiang Zheng, Jie Chen, Shuanghua Wang, Shouliang Lu, Bin Huang, Jichao Sun, Long Su   +10 more
wiley   +1 more source

Evaluating the Limitations of One‐Dimensional High‐Temperature Gas Chromatography ‐ FID for Wax Solution Analysis: A Systematic Study

Journal of Separation Science, Volume 49, Issue 3, March 2026.
ABSTRACT Wax deposition in petroleum systems is intrinsically connected with paraffin wax composition, yet their quantitative characterization by one‐dimensional high‐temperature gas chromatography with flame ionization detection (HTGC–FID), as prescribed by ASTM D5442, remains challenging.
Fernando B. Okasaki, Ivanei F. Pinheiro, Letícia Bizarre, Vanessa C. B. Guersoni   +3 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