Influence of steam on the coking characteristics of heavy oil during in situ combustion

Liu, Dong; Tang, Junshi; Zheng, Rencheng; Song, Qiang

doi:10.1016/j.fuel.2019.116904

Cited by 28 publications

(5 citation statements)

References 41 publications

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“…Liu et al also found that the presence of steam in the ISC process promoted the hydrogen production due to the hydrogen donation of steam. 192 Tang et al 193 provided a comprehensive study on kinetics for hydrogen generation of heavy oil with the focus on aquathermolysis. Hydrogen generation from heavy oil gasification requires high temperature conditions, which could be provided by the combustion front.…”

Section: Future Perspectivesmentioning

confidence: 99%

“…Gasification of bitumen accomplished by ISC can generate hydrogen through aquathermolysis, thermal cracking, water-gas shift reactions, and coke gasification reactions. Liu et al also found that the presence of steam in the ISC process promoted the hydrogen production due to the hydrogen donation of steam . Tang et al provided a comprehensive study on kinetics for hydrogen generation of heavy oil with the focus on aquathermolysis.…”

Section: Future Perspectivesmentioning

confidence: 99%

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In-Situ Combustion for Heavy Oil and Oil Sands Recovery: Recent Progress, Field Applications, and Future Perspectives

Yang,

Chai,

Yuan

et al. 2024

Energy Fuels

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Heavy oil and bitumen resources are estimated to account for about 70% of the global oil reserves. Recovery of these resources economically and environmentally is crucial to satisfy the crude oil demand in the next few decades. Steam injection-based techniques encounter challenges of large water usage, high operating costs, and huge greenhouse gas (GHG) emissions. In-situ combustion, which utilizes the heat generated by oxidation reactions between crude oil and oxygen, is an alternative and promising thermal technique to recover heavy oil and bitumen resources with the expectation to reduce water usage and lower operating costs. But complexity of oxidation behavior and uncertainty of in-situ combustion (ISC) performance prediction have restricted the field application of the ISC process. This paper provides a comprehensive review of the most recent studies about the ISC process and updated field projects. Various experimental studies are first presented to investigate the oxidation mechanisms of crude oil and the ISC enhanced oil recovery (EOR) mechanism. Based on the experimental advances, recent progress on reaction kinetics models and field scale modeling of ISC is presented. Subsequently, currently active field projects have been updated to provide the best practice of field operation. Finally, future perspectives of ISC for heavy oil or oil sands recovery are identified with a focus on in-situ catalytic upgrading and hydrogen generation.

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Section: Future Perspectivesmentioning

confidence: 99%

Section: Future Perspectivesmentioning

confidence: 99%

In-Situ Combustion for Heavy Oil and Oil Sands Recovery: Recent Progress, Field Applications, and Future Perspectives

Yang,

Chai,

Yuan

et al. 2024

Energy Fuels

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“…A sample of standard fuel oil was used to perform a comparative assessment of the obtained liquid hydrocarbon products. Such fuel oil is widely used in the energy complex [32][33][34]. This sample later will be referred to as S5.…”

Section: Characterization Of Materialsmentioning

confidence: 99%

Liquid Hydrocarbons Production by the Steam Gasification of Used Tires: Energy Characteristics and Environmental Sustainability

Ларионов¹,

Slyusarskiy²,

Kirgina³

et al. 2021

Preprint

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The technical characteristics of liquid hydrocarbons obtained by steam gasification of the recycled automobile tires were studied as well as the features of their combustion process. Steam gasification of grinded tires was carried out in a tubular reactor using superheated steam with 500°C temperature and 5 kg/h mass flow rate. The obtained characteristics were compared with a traditional liquid fuel oil. The technical characteristics were determined via the standard analytical methods. An ignition and a combustion of liquid hydrocarbon samples were carried out in the combustion chamber at different temperatures of heating medium Tg = 450–700°C. Gas-phase combustion products were analyzed using a flow-through gas analyzer. It was found that liquid hydrocarbons were characterized by a low pour point (-43°C – (-52) °C) and comparable to calorific value of traditional fuel oil (40.56–43.3 MJ/kg). In addition, the studied samples of liquid hydrocarbons were characterized by a lower ignition delay time (by 56 %, on average) and flame burning time (by 30 %, on average). Combustion process of the studied samples (including traditional fuel oil) was accompanied by the formation of micro-explosions.

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“…Kinetic cells are typically modeled as a perfectly mixed semi-batch reactor where the stationary mixture of oil and rock reacts with air that flows through the reactor [13][14][15][16]. However, previous studies report heterogeneities that cause variation in the reaction velocities throughout the cell volume [17][18][19][20]. Decoupling chemical reactions and mass transfer in kinetic cells may be important to improve the predictability obtained with ISC models.…”

Section: Introductionmentioning

confidence: 99%

Simulation tool for the analysis of in-situ combustion experiments that considers complex kinetic schemes and detailed mass transfer- theoretical analysis of the gas phase CO oxidation reaction

Álvarez

López

Molina

2022

CT&F Cienc. Tecnol. Futuro

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A simulation tool was designed for analyzing various experimental setups that include the ability to model detailed chemical reaction schemes for in-situ combustion (ISC) analysis.,. The simulation tool was illustrated with a theoretical example to the extent of CO oxidation in a gaseous phase takes place during ISC. The models in the simulation tool are based on fundamental conservation laws, physical correlations for porous media properties, and property databases available in literature. Emphasis is made on the analysis of chemical reactions in the gas phase, a characteristic that may be useful when temperatures are above 700°C and oxygen, unburned hydrocarbons, and CO coexist. The three modules of the simulation tool: (i) Kinetic cell, (ii) One-dimensional reactor, and (iii) Combustion tube, can be used to represent in detail the processes taking place in the typical laboratory-scale equipment used to characterize ISC. Tools for the analysis of transport phenomena and multiphase reactions, present in all three models, can support the process of finding chemical kinetic parameters for an easier calculation of device-independent kinetic constants. Four applications have the simulator scope: (i) Analysis of reactions in the gas phase, (ii) Axial gradients in a kinetic cell, (iii) Pressure build-up in a combustion tube, and (iv) Ignition in a combustion tube. These examples highlight the importance that homogeneous reactions may have in these systems and the existence, under certain conditions, of concentration gradients that are normally neglected, and can affect the interpretation of ISC experiments.

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Influence of steam on the coking characteristics of heavy oil during in situ combustion

Cited by 28 publications

References 41 publications

In-Situ Combustion for Heavy Oil and Oil Sands Recovery: Recent Progress, Field Applications, and Future Perspectives

In-Situ Combustion for Heavy Oil and Oil Sands Recovery: Recent Progress, Field Applications, and Future Perspectives

Liquid Hydrocarbons Production by the Steam Gasification of Used Tires: Energy Characteristics and Environmental Sustainability

Simulation tool for the analysis of in-situ combustion experiments that considers complex kinetic schemes and detailed mass transfer- theoretical analysis of the gas phase CO oxidation reaction

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