Analysis of gas hydrate deposits development by applying elements of hydraulic borehole mining technology

Abstract

Purpose. To substantiate and develop the principal schematics suitable for the existing technological level and method of gas hydrates production from the offshore fields.Methods. Analysis of properties inherent to gas hydrates and gas hydrate deposits and research into peculiarities of the technological operations of the hydraulic borehole mining.Findings. Basic processes related to the method of gas hydrate extraction from the productive stratum without energy consumption for phase transition on the basis of the hydraulic borehole mining technology are substantiated.Originality. The research provided rationale for manifestation of the group of factors involved in the process of immersed jets action on the gas hydrate in conditions of its natural occurrence. It was confirmed that gas hydrates can be extracted from the productive stratum without energy consumption for dissociation, by creating conditions for their recrystallization as a result of joint impact produced by immersed jets of sea water and a complex of related processes. Theoretical justification is given to the physical fundamentals of the processes associated with gas hydrates enrichment and concentration in the mine working. Practical implications.Technology for the development of gas hydrate deposits on the basis of hydraulic borehole mining without energy consumption for the phase transition is proposed.

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

“…In the works [29][30][31][32], a method for the development of marine gas hydrates deposits on the basis of hydraulic mining by boreholes is proposed. In the work [33], a variant of this method adaptation is proposed for the development of bituminous sands deposits.…”

Expanding of spheres the application of borehole hydro-production technology to develop deposits of non-traditional hydrocarbons

“…It also in mind that the method described in [18] Involves the use in the process of seawater (known mineralization). And the volume of the hydro-monitor flooded jet before the moment of reaching the destruction front will increase due to the addition of the pulp part together with particles of the breed [13].…”

“…Taking into account the properties and features of the bituminous sands bedding, the technology described above for the development of gas hydrate deposits [18] can be adapted to extract bitumen from bituminous sands deposits. The technology based on HBM and adapted for bitumen mining is presented in Fig.…”

Shielded development of bottom gas hydrates

“…Ґрунтовні огляди існуючих способів розробки дон-них газогідратів розглядалися багатьма дослідниками, зокрема українськими (Bondarenko, Maksymova, & Koval, 2013;Ovchynnikov, Ganushevych, & Sai, 2013;Ganushevych, Sai, & Korotkova, 2014;Pedchenko & Pedchenko, 2017). Ми розглянемо лише найбільш хара-ктерні з них з метою окреслити ті системні особливості існуючих способів розробки, які створюють значні ризики інвестицій у видобуток метану газогідратів і, за інерцією розвитку технічної думки, можуть гальмувати поступ видобувних технологій.…”