KFU. Card publication. In-situ combustion technique for developing fractured low permeable oil shale: Experimental evidence for synthetic oil generation and successful propagation of combustion front

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IN-SITU COMBUSTION TECHNIQUE FOR DEVELOPING FRACTURED LOW PERMEABLE OIL SHALE: EXPERIMENTAL EVIDENCE FOR SYNTHETIC OIL GENERATION AND SUCCESSFUL PROPAGATION OF COMBUSTION FRONT

Form of presentation

Articles in international journals and collections

Year of publication

2023

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Authors, employees of KFU

Bolotov Aleksandr Vladimirovich, author

Varfolomeev Mikhail Alekseevich, author

Derevyanko Vadim Konstantinovich, author

Emelyanov Dmitriy Anatolevich, author

Kadyrov Rail Ilgizarovich, author

Minkhanov Ilgiz Failevich, author

Tazeev Aydar Rinatovich, author

Bibliographic description in the original language

Bolotov A.V, Yuan C, Varfolomeev M.A, In-situ combustion technique for developing fractured low permeable oil shale: Experimental evidence for synthetic oil generation and successful propagation of combustion front//Fuel. - 2023. - Vol.344, Is.. - Art. �127995.

Annotation

The idea of in-situ combustion (ISC) for oil shale development and conversion has been proposed recently. Due to the low permeability of oil shale, it usually requires fracturing operation before air injection. However, one of the biggest technical questions is, whether the combustion front can be established and steadily propagate in the low permeable oil shale with fractures. To date, no experimental work has been reported to support this. The target of this work is to provide experimental evidence to answer this question. We have managed to create a novel method for packing and fracturing oil shale core samples in a combustion tube for simulating ISC processes. A systematic analysis for the physical–chemical modeling of ISC process in combustion tube was performed, including temperature profile, pressure drop buildup, composition of produced gases, X-ray computed tomography (CT) and visual inspection, as well as total organic content analysis of oil shale samples before and after combustion, calculation of combustion parameters (air requirement, air/fuel ratio, apparent atomic H/C ratio, oxygen utilization, and O2/fuel ratio), and synthetic oil production. All results indicated the successful establishment and propagation of the combustion front in the fractured, low-permeability oil shale sample. In addition, the permeability of oil shale was increased 2–3 times during combustion, which can be an important factor that supports the stable propagation of the combustion front. Furthermore, the effect of water and catalysts on ISC performance was investigated. It was found that water promotes the cracking reactions of heavy oils to produce CO2 and hydrocarbon gases, and the co-existence of catalysts and water together further improved the performance of the ISC process and synthetic oil production. The findings in this work provide the experimental evidence of the successful establishment and propagation of combustion front in fractured, low-permeability oil shale, and technically proves the feasibility of using ISC technology for in-situ retorting of oil shale to generate synthetic oil for the development and conversion of low permeable oil shale with additional fracturing.

Keywords

In-situ combustion, synthetic oil, oil shale

The name of the journal

Fuel

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149716044&doi=10.1016%2fj.fuel.2023.127995&partnerID=40&md5=3d7f9ebab75a1b05722399b7d48da47d

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=278879&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Bolotov Aleksandr Vladimirovich	ru_RU
dc.contributor.author	Varfolomeev Mikhail Alekseevich	ru_RU
dc.contributor.author	Derevyanko Vadim Konstantinovich	ru_RU
dc.contributor.author	Emelyanov Dmitriy Anatolevich	ru_RU
dc.contributor.author	Kadyrov Rail Ilgizarovich	ru_RU
dc.contributor.author	Minkhanov Ilgiz Failevich	ru_RU
dc.contributor.author	Tazeev Aydar Rinatovich	ru_RU
dc.date.accessioned	2023-01-01T00:00:00Z	ru_RU
dc.date.available	2023-01-01T00:00:00Z	ru_RU
dc.date.issued	2023	ru_RU
dc.identifier.citation	Bolotov A.V, Yuan C, Varfolomeev M.A, In-situ combustion technique for developing fractured low permeable oil shale: Experimental evidence for synthetic oil generation and successful propagation of combustion front//Fuel. - 2023. - Vol.344, Is.. - Art. �127995.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=278879&p_lang=2	ru_RU
dc.description.abstract	Fuel	ru_RU
dc.description.abstract	The idea of in-situ combustion (ISC) for oil shale development and conversion has been proposed recently. Due to the low permeability of oil shale, it usually requires fracturing operation before air injection. However, one of the biggest technical questions is, whether the combustion front can be established and steadily propagate in the low permeable oil shale with fractures. To date, no experimental work has been reported to support this. The target of this work is to provide experimental evidence to answer this question. We have managed to create a novel method for packing and fracturing oil shale core samples in a combustion tube for simulating ISC processes. A systematic analysis for the physical–chemical modeling of ISC process in combustion tube was performed, including temperature profile, pressure drop buildup, composition of produced gases, X-ray computed tomography (CT) and visual inspection, as well as total organic content analysis of oil shale samples before and after combustion, calculation of combustion parameters (air requirement, air/fuel ratio, apparent atomic H/C ratio, oxygen utilization, and O2/fuel ratio), and synthetic oil production. All results indicated the successful establishment and propagation of the combustion front in the fractured, low-permeability oil shale sample. In addition, the permeability of oil shale was increased 2–3 times during combustion, which can be an important factor that supports the stable propagation of the combustion front. Furthermore, the effect of water and catalysts on ISC performance was investigated. It was found that water promotes the cracking reactions of heavy oils to produce CO2 and hydrocarbon gases, and the co-existence of catalysts and water together further improved the performance of the ISC process and synthetic oil production. The findings in this work provide the experimental evidence of the successful establishment and propagation of combustion front in fractured, low-permeability oil shale, and technically proves the feasibility of using ISC technology for in-situ retorting of oil shale to generate synthetic oil for the development and conversion of low permeable oil shale with additional fracturing.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	In-situ combustion	ru_RU
dc.subject	synthetic oil	ru_RU
dc.subject	oil shale	ru_RU
dc.title	In-situ combustion technique for developing fractured low permeable oil shale: Experimental evidence for synthetic oil generation and successful propagation of combustion front	ru_RU
dc.type	Articles in international journals and collections	ru_RU