Supercritical Fluid Application in the Oil and Gas Industry: A Comprehensive Review

Pavlova, P.L.; Минаков, А. В.; Platonov, D. V.; Жигарев, В. А.; Guzei, D. V.

doi:10.3390/su14020698

Cited by 29 publications

(12 citation statements)

References 120 publications

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“…As time goes by, the solidified body may produce weathering, which leads to leakage risks. 3 Geofluids supercritical state (a special state between gas and liquid) with liquid-like high density and solubility and gas-like high diffusion, which could quickly penetrate into matrix of OBDC to achieve high extraction efficiency in extraction process [23,24]. In the extraction work of waste OBDC, CO 2 is usually considered as the ideal extraction solvent.…”

Section: Restriction Methodsmentioning

confidence: 99%

“…(1) In the extraction container, organic hydrocarbons in OBDC are dissolved and carried by supercritical CO 2 above the critical pressure and temperature; (2) adjusting the temperature or pressure lower than its critical point, the supercritical CO 2 will change to a gas state. Its solubility decreased sharply, causing separation of the supercritical CO 2 and extracted objects in first stage separator [23,29]. Due to the CO 2 , properties remain unchanged, the CO 2 not only can be recycled but also can be easily removed without leaving a solvent residue.…”

Section: Restriction Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Research Progress and Prospects on the Treating and Disposal for Waste Oil-Based Drilling Cuttings from Shale Gas Wells

et al. 2022

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Oil-based drilling cuttings (OBDC) from shale gas wells is a kind of typical hazardous waste produced during the exploration and development of shale gas reservoirs, which will endanger the natural ecosystem and human health. This article summarized the OBDC treating and disposal methods commonly used all over the world. The treating methods were divided into restriction, separation, and degradation, while the disposal methods were divided into landfill, land farming, and resource recovery. The technical principles, technological process, advantages, and limitations of existing OBDC treating and disposal methods were overviewed in detail, and the development prospects of OBDC and resource recovery were illustrated as well. Finally, we proposed to maximize the resource recovery of OBDC by multitechniques processing, tracking the processed products to improve the reliability of product quality. In addition, the data system for original materials used for different methods should be established to service industrial development.

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Section: Restriction Methodsmentioning

confidence: 99%

Section: Restriction Methodsmentioning

confidence: 99%

Research Progress and Prospects on the Treating and Disposal for Waste Oil-Based Drilling Cuttings from Shale Gas Wells

et al. 2022

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“…To address the issue of low thermal efficiency in steam injection for thermal recovery of heavy oil reservoirs, injecting supercritical water (SCW) can be utilized to enhance thermal utilization. − SCW is a special state of water . Under normal conditions, water can exist in four different states under different temperatures and pressures, as shown in Figure , which include the solid state region, the supersaturated water region, the superheated steam region, and the supercritical region.…”

Section: Introductionmentioning

confidence: 99%

Study on Hydrothermal Cracking of Heavy Oil under the Coexisting Conditions of Supercritical Water and Non-condensate Gas

et al. 2023

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This study looked at the effects of temperature, water−oil ratio, and the addition of non-condensable gas on the thermal cracking of extra-heavy oil in the lab. The goal was to learn more about the properties and reaction rates of deep extra-heavy oil under supercritical water conditions, which are not well understood. The changes in the composition of the extra-heavy oil were analyzed with and without the presence of non-condensable gas. The reaction kinetics of the thermal cracking of extra-heavy oil were quantitatively characterized and compared between the two conditions of supercritical water alone and supercritical water mixed with non-condensable gas. The results showed that (1) under supercritical water conditions, the extra-heavy oil underwent significant thermal cracking, which led to a significant increase in the amount of light components, the release of CH 4 , and the formation of a new component, coke, which led to a noticeable decrease in the viscosity of the oil; (2) increasing the water−oil ratio could promote the thermal cracking of extra-heavy oil and led to a significant decrease in oil viscosity, indicating a more complete thermal cracking reaction. Moreover, increasing the water−oil ratio was found to facilitate the flowability of the cracked oil; (3) the addition of non-condensable gas intensified the conversion of coke but inhibited and slowed down the thermal cracking of asphaltene, which is detrimental to the thermal cracking of extra-heavy oil; and (4) the kinetic analysis showed that the addition of non-condensable gas resulted in a decrease in the thermal cracking rate of asphaltene, which is detrimental to the thermal cracking of heavy oil.

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“…One promising application of supercritical fluids, especially carbon dioxide, is in the oil industry. Supercritical fluids make it possible to obtain new products with special characteristics or to develop and design processes that are cost-effective and environmentally friendly [2,3]. Supercritical fluid technologies are widely used in various industries, e.g.…”

Section: Introductionmentioning

confidence: 99%

Bellows control devices for borehole supercritical extraction processes

Башмур

Bukhtoyarov

Petrovsky

et al. 2022

J. Phys.: Conf. Ser.

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This paper discusses a pressure control and monitoring system to improve the reliability of borehole extraction processes. Borehole extraction processes can improve the quality of high-viscosity oil stimulation and can also be used in biofuel production processes by providing the necessary performance. This pressure control system is based on a bellows-type device capable of withstanding high pressures. The presented device has a number of advantages compared with counterparts: the possibility of pressure control, reducing the risk of water hammer, increasing reliability. When using a bellows device in downhole extraction processes, there is a problem of changing operating parameters with changing depth of diving. In this regard, a model was developed and the dependence of pressure changes inside the bellows device depending on the depth of the well was plotted, which will allow designing and regulating the device at various stages.

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Supercritical Fluid Application in the Oil and Gas Industry: A Comprehensive Review

Cited by 29 publications

References 120 publications

Research Progress and Prospects on the Treating and Disposal for Waste Oil-Based Drilling Cuttings from Shale Gas Wells

Research Progress and Prospects on the Treating and Disposal for Waste Oil-Based Drilling Cuttings from Shale Gas Wells

Study on Hydrothermal Cracking of Heavy Oil under the Coexisting Conditions of Supercritical Water and Non-condensate Gas

Bellows control devices for borehole supercritical extraction processes

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