Sub-and supercritical water upgrading of heavy oil: A review of laboratory-scale research on upgrading performance and physicochemical mechanism

Q Zhao, J Niu, Y Dong, Z Song, B Ke, P An, H Jin… - Chemical Engineering …, 2024 - Elsevier
In order to alleviate the pressure on the international energy supply, people began to turn
their attention to the abundant reserves of heavy oil resources. However, the high density …

A review on the reaction mechanism of heavy oil catalytic aquathermolysis: carbocationic reactions or free radical reactions?

Z Zhou, X Li, K Gao, J Nan, H Xiao, Y Lu, B Li… - Journal of Analytical and …, 2024 - Elsevier
The catalytic aquathermolysis of heavy oil is an effective technology for its recovery and has
achieved significant developments in recent years. Various related reaction mechanisms …

Evolution mechanism of coal chemical structure after supercritical CO2 transient fracturing

Y Li, H Ji, AP Sasmito, S Hu, C Han - Fuel, 2025 - Elsevier
This study investigates the chemical structural evolution of coal during supercritical CO 2
transient fracturing using a self-developed experimental platform. Coal samples with …

4-lump kinetic model for non-catalytic oil shale upgrading at sub-and supercritical water conditions

G Félix, R Djimasbe, MA Varfolomeev, A Al-Muntaser… - Fuel, 2024 - Elsevier
The kinetics of non-catalytic oil shale conversion at sub-and supercritical water conditions
was studied. All experiments were carried out in a batch reactor at 300–400° C and 1–48 h …

Effect of Reaction Pathways on the Kinetic Modeling of Aquathermolysis of Heavy Oils

G Félix, A Tirado, MA Varfolomeev… - Industrial & …, 2024 - ACS Publications
The proposal of a reaction scheme during the kinetic modeling of heavy crude oil upgrading
is an important step. Therefore, the study of the effect of using different reaction pathways on …

Naphtha co-injection with steam effects on Colombian heavy crude oils quality by FTIR and 1H NMR spectroscopy

AY León, NA Guerrero, S Muñoz, M Sandoval, R Pérez… - Fuel, 2024 - Elsevier
Steam and naphtha co-injection processes have been considered as an Enhanced oil
recovery strategy to deal with current challenges in the development of heavy oil reservoirs …

Kinetic modeling of oil shale upgrading at sub-and supercritical water conditions using Ni-and Fe-based oil-soluble catalysts

G Félix, R Djimasbe, MA Varfolomeev… - The Journal of …, 2024 - Elsevier
and 7-lump kinetic models for oil shale catalytic upgrading at sub-and supercritical water
conditions (300–400° C of temperature, 1–48 h of reaction time, and 1: 1 water-to-oil mass …

Aquathermolysis of Ashalcha heavy crude oil using an oil-soluble catalyst and a hydrogen donor: A kinetic study

G Félix, A Tirado, MA Varfolomeev… - Journal of Molecular …, 2024 - Elsevier
Over the last few years, the use of catalysts and solvents to increase the production of active
hydrogen has enhanced the aquathermolysis of heavy crude oils. However, none kinetic …

Comparison of Traditional and Sequential Approaches for Estimation of Kinetic Parameters of Heavy Oil Upgrading

G Félix, A Tirado, MA Varfolomeev… - Energy & …, 2024 - ACS Publications
During the kinetic modeling of reactions with complex feeds, the proposal of reaction
schemes is a crucial step, especially when the number of pathways considered is high …

The Effect of Thermal Steam Treatment Duration with Metallic Sodium Nanoparticles on Heavy Oil Upgrading

SA Trubitsina, VE Katnov, AA Kayumov… - Energy & …, 2024 - ACS Publications
The escalating share of hard-to-extract, highly viscous oil poses tangible challenges in the
realm of oil extraction. Employing thermal steam treatment (TST) technology presents a …