Results 51 to 60 of about 23,867 (262)

An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system

Deep Underground Science and Engineering, EarlyView.
The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand, Ang Li, Wenbo Huang, Juanwen Chen, Qingshan Ma, Fangming Jiang   +5 more
wiley   +1 more source

Investigation of Asphaltene Adsorption onto Zeolite Beta Nanoparticles to Reduce Asphaltene Deposition in a Silica Sand Pack

Oil & Gas Science and Technology, 2018
Zeolite beta nanoparticles were used as a new asphaltene adsorbent for reducing asphaltene deposition during fluid injection into a silica sand pack.
Kashefi Sepideh, Lotfollahi Mohammad Nader, Shahrabadi Abbas   +2 more
doaj   +1 more source

Study of asphaltene dispersion and removal for high-asphaltene oil wells [PDF]

Petroleum Science, 2012
Many wellbores are blocked by asphaltene deposits, which lead to production problems in the oilfield development process. In this paper, methods such as elemental analysis, and solvent extraction are adopted for the study of wellbore blockages. The content of organic matter in blockages is higher than 96% and asphaltene is the main component of the ...
Qingzhe Jiang, Jixiang Guo, Chaogang Chen, Na An, Na An, Yangqiu Pan, Yaguang Li   +6 more
openaire   +2 more sources

Pre‐treatment with extraction solvent yields higher recovery: Method optimization for efficient determination of polycyclic aromatic hydrocarbons in organic‐rich fine‐textured wastes

Journal of Environmental Quality, EarlyView.
Abstract Fluid fine tailings (FFT) contain numerous organic compounds, including polycyclic aromatic hydrocarbons (PAHs). Growing concerns of PAH toxicity warrants monitoring for environmental consequences and natural attenuation. Conventional Soxhlet extraction yields low (∼50%–60%) recovery of PAHs (naphthalene, phenanthrene, pyrene, dibenzofuran ...
Henian Guo, Najmeh Samadi, Maryam Firoozbakht, Alsu Kuznetsova, Tariq Siddique   +4 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

Ion Source Complementarity for Characterization of Complex Organic Mixtures Using Fourier Transform Mass Spectrometry: A Review

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase, Maxime Sueur, Hélène Lavanant, Christopher Paul Rüger, Pierre Giusti, Carlos Afonso   +5 more
wiley   +1 more source

An improved modeling approach for asphaltene deposition in oil wells including particles size distribution

Oil & Gas Science and Technology, 2018
There are several approaches to model Asphaltene deposition process in the wellbore. There are different assumptions to simplify the problem in the previous investigations for specific conditions, limiting the prediction range of the models. In this work,
Eyni Leila, Assareh Mehdi, Ayatollahi Shahab, Ranjbaran Mohammad   +3 more
doaj   +1 more source

Synthesis and Mechanistic Study of a Copolymer Demulsifier for Dehydration of Water‐in‐Oil Emulsion of Crude Oil

ChemistryOpen, EarlyView.
P(AM‐EHMA‐VBS‐VP), a novel polymeric demulsifier, adsorbs at the interface, reduces interfacial modulus, overcomes asphaltene‐inhibited coalescence, and promotes droplet coalescence for effective demulsification. This study presents the synthesis and characterization of a novel polymeric demulsifier, P(AM‐EHMA‐VBS‐VP), through emulsion polymerization ...
Xuezhi Li, Bin Ma, Liming Fu, Jing Bai, Qingbing Zhang, Baolu Yu   +5 more
wiley   +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

Coarse‐grained molecular dynamics reveals rejuvenation behavior in aged asphalt

Computer-Aided Civil and Infrastructure Engineering, EarlyView.
Abstract To address the issue of insufficient spatiotemporal scales in all‐atom molecular dynamics (MD) simulations, this study employs coarse‐grained MD (CGMD) based on the MARTINI 3.0 force field to simulate the rejuvenation behavior of asphalt. Based on all‐atom molecular structure coarse‐grained mapping, molecular models of both virgin and aged ...
Liang He, Haitao Huang, Wentao Zhang, Changjiang Dai, Guannan Li, Alessio Alexiadis, Mengzhe Tao, Wim Van den bergh, Karol J. Kowalski   +8 more
wiley   +1 more source