Results 41 to 50 of about 1,575 (217)

Spatially Coupled Cl2 Confinement and Activation at Curved Ni Single‐Atom Sites for Highly Reversible Li–Cl2 Batteries

Angewandte Chemie International Edition, EarlyView.
A robust cathode featuring curvature‐engineered Ni single‐atoms anchored within hierarchical pores effectively confines Cl2 and accelerates Cl0/Cl−1 redox kinetics. This synergistic architecture unlocks the potential of Li‐Cl2 secondary batteries with an unprecedented 1×106 mAh g−1 cumulative capacity, all‐climate resilience (–40°C to + 70°C), and 7.65
Minggang Xie, Keren Jiang, Xuehai Tan, Xuesong Xie, Zheng Cheng, Xianbin Meng, Yuxuan Xue, Yi Guan, Zhixuan Chen, Yifan Li, Renfei Feng, Zhi Li   +11 more
wiley   +1 more source

A Systematic approach to determine the optimal production rate to inhibit asphaltene deposition [PDF]

, 2016
This thesis utilizes a systematic mathematical model, scaling analysis, to quantify the effect of production rate on asphaltene deposition, using a set of uniquely described mathematical equations modeled for the deposition process.
Nosakhare, Adesuwa
core  

Asphaltene Precipitation Investigation Using a Screening Techniques for Crude Oil Sample from the Nahr-Umr Formation/Halfaya Oil Field

Iraqi Journal of Chemical and Petroleum Engineering, 2023
Many oil and gas processes, including oil recovery, oil transportation, and petroleum processing, are negatively impacted by the precipitation and deposition of asphaltene. Screening methods for determining the stability of asphaltenes in crude oil have
Moammed A. Ahmed, Ghassan H. Abdul-Majeed, Ali K. Alhuraishawy   +2 more
doaj   +1 more source

In‐situ asphaltene capture with iron oxide nanoparticles in steam‐assisted gravity drainage (SAGD) for improved recovery and partial upgrading of bitumen

The Canadian Journal of Chemical Engineering, EarlyView.
Key improvements obtained by incorporating nanoparticles into a lab‐scale SAGD process configuration. The bar plots show enhanced oil recovery, reduced viscosity, and increased asphaltene adsorption in nanoparticle‐assisted scenarios compared with conventional SAGD.
Luis Prada, Saleh S. Baakeem, Mabkhot BinDahbag, M. Daniela Contreras‐Mateus, Jesus Botett, Afif Hethnawi, Nashaat N. Nassar   +6 more
wiley   +1 more source

Simulations of Asphaltene Deposition in Submarine Pipelines by CFD [PDF]

, 2010
The transportation of heavy or waxy crude oils presents some special design problems, which must take into account the requirements for the control of asphaltene deposition on interior surfaces of the pipeline. With the asphaltene deposition of the crude
Li Qingping, Yu Xichong, Zhu Hongjun, Jing Jiaqiang, Chen Junwen   +4 more
core   +1 more source

An Investigation of Asphaltene Deposition Mechanisms During Natural Depletion Process by a Two Phase Modeling Using Genetic Algorithm Technique [PDF]

Journal of Petroleum Science and Technology, 2017
In this work, the natural depletion process in sandstone and carbonate cores was modeled to investigate the asphaltene deposition mechanisms. A new permeability reduction correlation was proposed based on the Minssieux model that considers a combination ...
Sepideh Kashefi, Mohammad Nader Lotfollahi, Abbass Shahrabadi   +2 more
doaj   +1 more source

Hydrogen donor‐assisted visbreaking of Canadian oil sands bitumen

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract High‐viscosity Canadian oil sands bitumen requires processing for efficient transportation and refining. Partial upgrading technologies, primarily based on thermal processing, can effectively reduce, or even eliminate, the use of costly diluent, increase bitumen quality and market value, potentially decrease greenhouse gas (GHG) emissions, and
Yi Zhang, Mohamed Ali, Jinwen Chen
wiley   +1 more source

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

Quantitative Insights into Atomic Scale Oil–Clay Adhesion Governing Shale Oil Retention and Mobility

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Atomic force microscopy reveals a clear adhesion hierarchy between shale oil and clay minerals, governed by nanoscale surface chemistry. Strong interactions on chlorite and illite arise from abundant polar sites and cation bridging, whereas weaker coupling on montmorillonite limits interfacial binding.
Chen Lv, Guanwen Lu, Guandong Su
wiley   +1 more source

Mechanistic Investigation and Modeling of Asphaltene Deposition [PDF]

, 2019
The potential for asphaltene to get precipitated and deposited in wellbore and flowlines under changes in pressure, temperature, and composition of crude oil is a major concern for the oil and gas industry.
Rajan Babu, Narmadha
core