Hydrothermal conversion of oil shale: Synthetic oil generation and micro-scale pore structure change

Saeed, Shadi A.; Taura, Usman; Al-Wahaibi, Yahya; Al‐Muntaser, Ameen A.; Yuan, Chengdong; Varfolomeev, Mikhail A.; Al-Bahry, Saif N.; Joshi, Sanket; Djimasbe, Richard; Suwaid, Muneer A.; Kadyrov, Rail; Galeev, Ranel I.; Naabi, Ahmed; Hasani, Majid; Busaidi, Rashid Said Al

doi:10.1016/j.fuel.2021.122786

Cited by 24 publications

(5 citation statements)

References 44 publications

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“…The injection of hot fluid consists of mainly injection steam into the reservoir to heat up the formation and the in situ fluid to increase the fluid mobility. Some studies have reported the application of hot fluids for shale and tight oil reservoirs [47][48][49]. With respect to shales, the thermal EOR methods applied must be capable of providing the adequate heat required to convert the kerogen mobile hydrocarbons.…”

Section: Hot-fluid Injection (Hfi)mentioning

confidence: 99%

“…Kentucky shale [47] Supercritical toluene 460 Natih B Formation-Oman [49] Supercritical water 400 Domanik formation [58] Supercritical Water 374 at 24.6 MPa Huadian oil shale [56] Subcritical water 300 Huadian oil shale [59] Subcritical FeCl 2 solution 350 Huadian oil shale [60] Subcritical CaCl 2 solution 350 Huadian oil shale [61] Subcritical FeCl 3 solution 350 Longkou Liangjia [62] Supercritical water 425…”

Section: Formationmentioning

confidence: 99%

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Tight and Shale Oil Exploration: A Review of the Global Experience and a Case of West Siberia

Dorhjie,

Mukhina,

Kasyanenko

et al. 2023

Energies

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Shale and tight oil reservoirs, with horizontal wells and hydraulic fractures, typically have a recovery ratio of around 10%. The exploration of tight oil and shale in North America has proven economically viable, thanks to advancements, such as horizontal wells, hydraulic fracturing, and other enhanced oil recovery techniques. Taking inspiration from the global experience (the North American shale experience), the exploration and development of the West Siberian tight and shale reserves was more focused on the reported best practices of the exploration of North American shale. In this study, the advance in the specific areas of shale and tight oil exploration was considered, with more emphasis placed on the progress in the exploration of West Siberian shales. According to the review literature, thermal enhanced recovery methods capable of converting organic matter into hydrocarbons were studied more than other methods of enhanced oil recovery. Aligned with global trends, there has been a growing focus on research aiming to integrate data-driven approaches and pore-scale simulations to enhance recovery from tight and shale formations. Multiple pilot studies have showcased promising prospects for implementing multistage hydraulic fracturing. Nevertheless, there are limited pilot studies dedicated to enhanced oil recovery methods for West Siberian shale.

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Section: Hot-fluid Injection (Hfi)mentioning

confidence: 99%

Section: Formationmentioning

confidence: 99%

Tight and Shale Oil Exploration: A Review of the Global Experience and a Case of West Siberia

Dorhjie,

Mukhina,

Kasyanenko

et al. 2023

Energies

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“…With sub-and supercritical extraction, when the temperature rises, the process turns into gasification. For example, from the Natih B formation (Oman) oil shale at 300 °C, the yield of liquid products was 11.7% and with an increase in temperature to 400 °C, the yield of liquid products decreased to 10.1% and that of gas increased from 19.6% to 66.34% [98].…”

Section: Extraction From Oil Shalementioning

confidence: 99%

Thermal methods of solid fuel processing: review

Myltykbayeva¹,

Smaiyl²,

Yeshova³

2022

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A review of literature data on the processing of solid types of combustible fossils into liquid fuels and chemical products has been carried out. The reserves of solid fossil fuels far exceed the natural resources of oil and gas, so the development of methods for processing solid fossil fuels into chemical products and liquid fuels is an urgent task. The main methods of processing coal and oil shale (OS) are reduced to pyrolysis and supercritical gasification. Pyrolysis is preferred for processing oil shale into shale oil, and currently a promising method for processing coal is extraction with supercritical solvents such as water and CO 2 at temperatures up to 900 °C and in some cases with the addition of a catalyst. For oil shale, the gasification process, like pyrolysis, is carried out under milder conditions, since the mineral part of oil shale contains trace elements that act as catalysts, and the structure of the organic part of oil shale is more similar in composition to oil.

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“…They observed the highest yield of extraction (6.95% by weight) at 260 °C, 15 MPa, noting a subsequent decline in yield with prolonged experiment duration. Meanwhile, in the investigation detailed in ref , the hydrothermal conversion of shale rock from the Natih B deposit in Oman was explored. Conducted at temperatures of 300, 350, and 400 °C and a pressure of 2291.6 psi, the study revealed optimal shale rock conversion transpiring at 350 °C.…”

Section: Introductionmentioning

confidence: 99%

Structural Alterations of Oils and Domanic Shales During Supercritical Water Injection

Kiselev,

Feoktistov,

Onishchenko

et al. 2024

Energy Fuels

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Shale oil is a complex organic rock in which kerogen serves as the main source for obtaining liquid hydrocarbons. Traditional methods of light oil extraction prove to be inefficient due to their low bitumen content and high extraction costs. This stimulates the need for the development of new, efficient, and environmentally friendly technologies for the extraction and processing of shale oil. This article proposes a method of hydrothermal conversion of Domanic shale in subcritical and supercritical fluids at various temperatures (300, 350, and 400 °C). Analysis methods include SARA analysis, gas chromatography, GC/MS of saturated and aromatic fractions, IR spectroscopy, Xray tomography of rocks, and others. The results confirm changes in the composition and structure of shale, including hydrocarbon redistribution, changes in resins and asphaltenes, and heterogeneous changes in pore space. These data reveal the influence of hydrothermal conversion of Domanic shale, opening new perspectives for understanding and optimizing the processes of synthetic oil production.

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Hydrothermal conversion of oil shale: Synthetic oil generation and micro-scale pore structure change

Cited by 24 publications

References 44 publications

Tight and Shale Oil Exploration: A Review of the Global Experience and a Case of West Siberia

Tight and Shale Oil Exploration: A Review of the Global Experience and a Case of West Siberia

Thermal methods of solid fuel processing: review

Structural Alterations of Oils and Domanic Shales During Supercritical Water Injection

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