Possible mechanism of oil formation in a flow of supercritical fluid (using carbon dioxide as an example)

Лифшиц, С. Х.; Chalaya, O. N.

doi:10.1134/s1990793110070146

Cited by 3 publications

(6 citation statements)

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“…Earlier (Lifshits 2009), we considered the case of the introduction of a flow of deep fluids in a supercritical state into a sedimentary basin with DOM. An assumption was made and shown experimentally using supercritical СО 2 as an example – that the fluid is capable of extracting and transporting petroleum hydrocarbons from dense oil-source rocks, concentrating them into a pool (Lifshits & Chalaya 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Before each experiment, a blank (without sample loading) run of CO 2 was carried out to make sure that there were no extracted substances from the previous experiment in the system. This technique for conducting experiments with supercritical CO 2 has been tested in previous work (Lifshits & Chalaya 2010; Lifshits et al . 2012).…”

Section: Methodsmentioning

confidence: 99%

“…The study of deep fluids and their interaction with lithospheric substrates should become the main direction of research in oil and gas geology of the 21st Century (Lukin & Pikovsky 2004). At present, more and more research is being done in this direction (Lifshits & Chalaya 2010; Khasanov et al . 2017; Luo et al .…”

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confidence: 99%

“…Previously, we considered a model of the genesis of oil in an open system (Lifshits 2009; Lifshits & Chalaya 2010), according to which rock with DOM completely or partially penetrates deep fluid in a supercritical state. It should be noted that supercritical fluids have a very high dissolving and penetrating ability, superfluidity, and chemical activity (Makaryan et al .…”

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confidence: 99%

“…Due to its high penetrating and dissolving power, as well as superfluidity, the fluid can penetrate microcracks and micropores of oil-source rock, dissolving oil hydrocarbons and transferring them into reservoir rock with the formation of gas and oil deposits. Experimentally, using the example of supercritical CO 2 , it was shown that such a transfer is possible and accompanied by a mild mechanochemical transformation of organic matter (Lifshits & Chalaya 2010).…”

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Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO₂

Лифшиц

2021

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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Hydrocarbon migration mechanism into a reservoir is one of the most controversial in oil and gas geology. The research aimed to study the effect of supercritical carbon dioxide (СО2) on the permeability of sedimentary rocks (carbonates, argillite, oil shale), which was assessed by the yield of chloroform extracts and gas permeability (carbonate, argillite) before and after the treatment of rocks with supercritical СО2. An increase in the permeability of dense potentially oil-source rocks has been noted, which is explained by the dissolution of carbonates to bicarbonates due to the high chemical activity of supercritical СО2 and water dissolved in it. Similarly, in geological processes, the introduction of deep supercritical fluid into sedimentary rocks can increase the permeability and, possibly, the porosity of rocks, which will facilitate the primary migration of hydrocarbons and improve the reservoir properties of the rocks. The considered mechanism of hydrocarbon migration in the flow of deep supercritical fluid makes it possible to revise the time and duration of the formation of gas–oil deposits decreasingly, as well as to explain features in the formation of various sources of hydrocarbons and observed inflow of oil into operating and exhausted wells.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO₂

Лифшиц

2021

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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Fatty Acids

Brondz

2016

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering

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Adamantane Hydrocarbons as Indicators of Oil Genesis in the Open System

Лифшиц

Chalaya

2019

IOP Conf. Ser.: Earth Environ. Sci.

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Hydrocarbons of the adamantane structure are referred to as hydrocarbon biomarkers. However, they differ from other biomarkers in that no analogues of hydrocarbons of adamantane structure in wildlife have been found. These hydrocarbons are assumed to have been formed because of structural rearrangements and at the polycyclic naphthenic hydrocarbons molecules fragmentation. Adamantane hydrocarbons, regardless of the deposit location, are featured by the pronounced nonequilibrium composition. This is, although in laboratory experiments at sufficiently low temperatures (180-220°C) equilibrium is reached within a few days. All these testify to the fact that the formation of adamantane structures has proceeded very fast, in the kinetic regime, and is most likely to associate with the processes of hydrocarbons migration into the deposit. Researchers of adamantane hydrocarbons indicate the option of adamantane structures formation in migration processes, though not specifying the mechanism of their development. It has been suggested that the formation of adamantane hydrocarbons proceeds dynamically in a stream of deep fluids in the supercritical state. The isomeric composition of alkyl adamantanes is determined by the time of contact with the rocks, as well as their catalytic activity. This can confirm the earlier assumption on oil genesis in thermodynamically open system.

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Possible mechanism of oil formation in a flow of supercritical fluid (using carbon dioxide as an example)

Cited by 3 publications

References 1 publication

Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO₂

Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO₂

Fatty Acids

Adamantane Hydrocarbons as Indicators of Oil Genesis in the Open System

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Possible mechanism of oil formation in a flow of supercritical fluid (using carbon dioxide as an example)

Cited by 3 publications

References 1 publication

Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO2

Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO2

Fatty Acids

Adamantane Hydrocarbons as Indicators of Oil Genesis in the Open System

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Product

Resources

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Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO₂

Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO₂