Numerical verification of in-situ heavy oil upgrading experiments and thermal processes for enhanced recovery

Fuel ◽  
2022 ◽  
Vol 313 ◽  
pp. 122730
Author(s):  
Nicolás Bueno ◽  
Juan M. Mejía
Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 497 ◽  
Author(s):  
Abarasi Hart ◽  
Mohamed Adam ◽  
John P. Robinson ◽  
Sean P. Rigby ◽  
Joseph Wood

This paper reports the hydrogenation and dehydrogenation of tetralin and naphthalene as model reactions that mimic polyaromatic compounds found in heavy oil. The focus is to explore complex heavy oil upgrading using NiMo/Al2O3 and CoMo/Al2O3 catalysts heated inductively with 3 mm steel balls. The application is to augment and create uniform temperature in the vicinity of the CAtalytic upgrading PRocess In-situ (CAPRI) combined with the Toe-to-Heel Air Injection (THAI) process. The effect of temperature in the range of 210–380 °C and flowrate of 1–3 mL/min were studied at catalyst/steel balls 70% (v/v), pressure 18 bar, and gas flowrate 200 mL/min (H2 or N2). The fixed bed kinetics data were described with a first-order rate equation and an assumed plug flow model. It was found that Ni metal showed higher hydrogenation/dehydrogenation functionality than Co. As the reaction temperature increased from 210 to 300 °C, naphthalene hydrogenation increased, while further temperature increases to 380 °C caused a decrease. The apparent activation energy achieved for naphthalene hydrogenation was 16.3 kJ/mol. The rate of naphthalene hydrogenation was faster than tetralin with the rate constant in the ratio of 1:2.5 (tetralin/naphthalene). It was demonstrated that an inductively heated mixed catalytic bed had a smaller temperature gradient between the catalyst and the surrounding fluid than the conventional heated one. This favored endothermic tetralin dehydrogenation rather than exothermic naphthalene hydrogenation. It was also found that tetralin dehydrogenation produced six times more coke and caused more catalyst pore plugging than naphthalene hydrogenation. Hence, hydrogen addition enhanced the desorption of products from the catalyst surface and reduced coke formation.


2015 ◽  
Vol 54 (43) ◽  
pp. 10645-10655 ◽  
Author(s):  
Abdullah Al-Marshed ◽  
Abarasi Hart ◽  
Gary Leeke ◽  
Malcolm Greaves ◽  
Joseph Wood

Catalysts ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 132 ◽  
Author(s):  
Luisana Cardona ◽  
Daniela Arias-Madrid ◽  
Farid Cortés ◽  
Sergio Lopera ◽  
Camilo Franco

Fuel ◽  
2019 ◽  
Vol 252 ◽  
pp. 262-271 ◽  
Author(s):  
Seyed Moein Elahi ◽  
Carlos E. Scott ◽  
Zhangxin Chen ◽  
Pedro Pereira-Almao

2019 ◽  
Vol 44 (51) ◽  
pp. 27671-27684 ◽  
Author(s):  
Morteza Hosseinpour ◽  
Amir Hossein Hajialirezaei ◽  
M. Soltani ◽  
Jatin Nathwani

Author(s):  
Umar Gaya

Crude oil deposits as light/heavy form all over the world. With the continued depletion of the conventional crude and reserves trending heavier, the interest to maximise heavy oil recovery continues to emerge in importance. Ordinarily, the traditional oil recovery stages leave behind a large amount of heavy oil trapped in porous reservoir structure, making the imperative of additional or enhanced oil recovery (EOR) technologies. Besides, the integration of downhole in-situ upgrading along with oil recovery techniques not only improves the efficiency of production but also the quality of the produced oil, avoiding several surface handling costs and processing challenges. In this review, we present an outline of chemical agents underpinning these enabling technologies with a focus on the current approaches, new formulations and future directions.


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