Development of natural bitumen (bituminous sands) deposits based on the technology of hydraulic mining by boreholes

Pedchenko, Larysa; Pedchenko, Nazar; Manhura, Andrii; Pedchenko, Mykhailo

doi:10.1051/e3sconf/201912301036

Cited by 6 publications

(8 citation statements)

References 24 publications

(27 reference statements)

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“…On the basis of the elements of the technology of borehole hydraulic production in works [29,30], a method of extracting natural bitumen and high-viscosity oil for the entire depth interval of their occurrence was proposed, and in work [31] it was improved. The schematic diagram of the implementation of this method is presented in figure 1.…”

Section: Technology Based On Borehole Hydraulic Productionmentioning

confidence: 99%

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Analysis of the geotechnological potential of heavy oil/bitumen production based on the improved method of well hydraulic production

Pedchenko,

Podoliak

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The work provides an analysis of technologies for the intensification of heavy oil and bitumen production. A variant of its improvement based on the technology of borehole hydraulic production supplemented by the processes of dissolution with hydrocarbon solvents and catalytic aquathermolysis is proposed. The technology involves transfer of main operations of technological chain “extraction-preparation” to the productive layer (transfer of rock to composition of hydraulic mixture; viscosity reduction as a result of heating, dissolution with hydrocarbon solvents, destruction as a result of catalytic aquathermolysis; flotation of oil/bitumen droplets and gravitational separation of the rock). At the same time, in order to increase the efficiency of the technology and use of catalyst, it is proposed to implement the catalytic destruction of asphaltenes starting from mining and continuing after extraction to the surface in a technological installation. Moreover, the required volume of the solvent fraction (taking into account its irreversible losses) is expected to be obtained directly at the deposit as a result of catalytic aquathermolysis and distillation at the final stage of preparation. The improvement will allow to ensure the maximum coefficient of extraction of hydrocarbons with simultaneous modernization to the level suitable for transportation by pipelines without additional preparation.

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Section: Technology Based On Borehole Hydraulic Productionmentioning

confidence: 99%

“…Thus, the technology described in works [29][30][31] allows solving a number of problems and shortcomings of the SAGD technology and its modifications. However, to increase competitiveness for industrial implementation, it is necessary to consider options for its further improvement.…”

Section: Technology Based On Borehole Hydraulic Productionmentioning

confidence: 99%

Analysis of the geotechnological potential of heavy oil/bitumen production based on the improved method of well hydraulic production

Pedchenko,

Podoliak

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Significant susceptibility to bituminous sand disintegration (especially after reducing the bitumen viscosity as a result of heating or solvent action) is a positive factor of this method. Taking into account the above requirements for bitumen and high-viscosity oil extraction technology at the site of their bedding, as well as the features (and disadvantages) of the technology of well hydraulic mining of the minerals in works [24,25], a method (Fig. 3) is proposed, which includes:…”

Section: Substantiation Of Technology Parametersmentioning

confidence: 99%

“…However, the technology proposed in [24,25] is based on thermal processes of bitumen extraction and therefore cannot be perfect in terms of energy efficiency, environmental impact caused by CO 2 emissions. Therefore, there are reserves for its improvement and increasing competitiveness.…”

Section: Substantiation Of Technology Parametersmentioning

confidence: 99%

Improvement of the bitumen extraction technology from bituminous sand deposits

Pedchenko

Kicki

et al. 2020

E3S Web Conf.

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Today considerable experience in the development of tar sands is accumulated. However, well-known mining technologies do not cover the entire depth range of natural bitumen deposits. In addition, there are significant energy-intensive technologies and negative environmental impacts. In view of this, the purpose of this work is to improve the method of extracting natural bitumen in site for a deposit interval of 75 – 200 m and to substantiate the basic technological scheme of this method. The proposed method of extracting bitumen from poorly cemented reservoirs in the depth range of 50 – 400 m provides: creation of artificial mine working; the transfer of the rock into the water mixture composition under the action of high pressure jets of a heated mixture of water, a hydrocarbon solvent and a flotation agent; separation from the rock and concentration of bitumen in the production as a result of its heating, dissolution and flotation; selection of depleted bitum slurry from the mine working by gas lift method. The proposed method of extracting bitumen is the transfer of the rock at the site of its occurrence to the suspension condition on the excavation created by the hydraulic production method, separation and concentration of bitumen by dissolving it with a heated hydrocarbon solvent and a flotation agent (hydrocarbon reagents), and extraction in the composition of depleted rock slurry to the surface by the gas lift method. As the preliminary calculations show, the proposed method will allow the efficient extraction of bitumen and highly viscous oil from weakly cemented reservoirs in the depth range of 50 – 400 m. Also, the proposed technology creates the preconditions for the development of oil sands at a depth of 75 – 200 m since there is currently no effective technology for the interval. In addition, it can significantly reduce energy costs, environmental pollution and greenhouse gas emissions.

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“…Gas hydrates are formed by including gas molecules (volatile liquids) in the cavity of the scaffold (crystal lattice) constructed of water molecules under thermodynamic conditions specific for each gas component. In case of their violation, the "guests" molecules, that is, gas molecules held in the skeletal water scaffold by weak Van der Waals forces, leave it, and the hydrate is dissociated into gas and fresh water with significant heat absorption [17]. Since gas hydrates belong to the class of nonstoichiometric clathrate compounds and are molecular crystals, research into crystal hydrates morphology is of great importance and gives an ability to study in depth many properties and characteristics of gas hydrates [18].…”

Section: Introductionmentioning

confidence: 99%

Research Into Peculiarities of Phase Transitions During the Dissociation of Gas Hydrates

Sai¹

2021

JDMI

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Purpose. Analytical study of the dissociation process of gas hydrates taking into account the peculiarities of phase transitions occurring during their dissociation and described by the Clausius-Clapeyron equation. Methods. The research uses an integrated approach, which includes the analysis and generalization of literature sources devoted to studying the peculiarities and thermobaric properties of gas hydrates; processes of hydrate formation and accumulation; methods for the development of gas hydrate deposits and technologies for extracting the methane gas from them; analytical calculations of phase transitions of gas hydrates. Findings. The conditions for the formation of gas hydrate deposits have been analyzed and the peculiarities of stable existence of gas hydrates have been revealed. The existing experience in the development of gas hydrate technologies by leading scientists, world research laboratories, advanced design institutes and organizations is summarized. The mechanism of hydration formation in rocks is studied and some classifications of gas hydrate deposits occurring in sedimentary rock stratum are presented. It has been determined that gas hydrates in natural conditions usually occur not only in the form of pure hydrate reservoirs, but most often contain a certain share of rock intercalations, which makes the deposit structure heterogeneous. The mechanisms of hydrate formation and dissociation of gas hydrates have been revealed. It has been determined that the Clausius-Clapeyron equation in a modified form can be used to describe phase transitions both during the formation and dissociation of gas hydrates, taking into account the deposit heterogeneity. Originality. The Clausius-Clapeyron equation for the analysis of phase transformations in solid phases during hydrate formation and dissociation of gas hydrates is defined more exactly, taking into account the consumption of additional heat due to the influence of the properties of rock intercalations. Practical implications. The research results are useful for designing the rational thermobaric parameters (pressure and temperature) in the dissociation of natural or technogenic gas hydrates, as well as for optimal control of the kinetics of the process.

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Development of natural bitumen (bituminous sands) deposits based on the technology of hydraulic mining by boreholes

Cited by 6 publications

References 24 publications

Analysis of the geotechnological potential of heavy oil/bitumen production based on the improved method of well hydraulic production

Analysis of the geotechnological potential of heavy oil/bitumen production based on the improved method of well hydraulic production

Improvement of the bitumen extraction technology from bituminous sand deposits

Research Into Peculiarities of Phase Transitions During the Dissociation of Gas Hydrates

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