Technological solutions for well construction in high-viscous shale hydrocarbon fields
https://doi.org/10.31660/0445-0108-2021-3-52-62
Abstract
The article discusses the main technological processes of well construction for the production of high-viscosity hydrocarbons from productive lowporosity reservoirs with high temperature and pressure conditions, which include shale deposits of Bazhenov formation. According to the results of the review and analysis of existing solutions in the development of this deposits, the following measures were justified and proposed: construction of branched multi-hole azimuth horizontal wells, implementation of selective multi-stage hydraulic fracturing in the productive formation; the use of oil-based process fluids when opening the reservoir, the use of plugging materials for isolation of the reservoir, the hardening product of which is represented by thermally stable hydrate phases (hydrobasic hydrosilicates). Вranched wells have a long horizontal end (about 1 000 meters or more). Only a part of the horizontal section works effectively, which is the basis for the development and application of the staged, both in time and along the strike, hydraulic fracturing method. At the level of the invention, a method and apparatus for carrying out multistage selective hydraulic fracturing in wells with horizontal completion have been developed. The article describes a method for implementing multistage selective hydraulic fracturing, comparing this method with the existing ones. Much attention is given to the need to use hydrocarbon-based solutions for the initial opening the reservoir, to use cement slurries from composite materials to separate the reservoir, the hardening product of which is a stone formed by low-basic calcium hydrosilicate.
About the Authors
V. P. Ovchinnikov
Industrial University of Tyumen
Russian Federation
Russian Federation
Vasiliy P. Ovchinnikov, Doctor of Engineering, Professor at the Department of Drilling Oil and Gas Wells
Tyumen
O. V. Rozhkova
Industrial University of Tyumen
Russian Federation
Russian Federation
Oksana V. Rozhkova, Assistant at the Department at the Department of Drilling Oil and Gas Wells,
Tyumen
S. N. Bastrikov
Industrial University of Tyumen
Russian Federation
Russian Federation
Sergey N. Bastrikov, Doctor of Engineering, Professor at the Department of Drilling Oil and Gas Wells,
Tyumen
D. S. Leontiev
Industrial University of Tyumen
Russian Federation
Russian Federation
Dmitry S. Leontiev, Candidate of Engineering, Assistant at the Department of Drilling Oil and Gas Wells
Tyumen
P. V. Ovchinnikov
Sergo Ordzhonikidze Russian State University for Geological Prospecting
Russian Federation
Russian Federation
Pavel V. Ovchinnikov, Doctor of Engineering, Professor at the Department of Modern Drilling Technologies
Moscow
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Review
For citations:
Ovchinnikov V.P., Rozhkova O.V., Bastrikov S.N., Leontiev D.S., Ovchinnikov P.V. Technological solutions for well construction in high-viscous shale hydrocarbon fields. Oil and Gas Studies. 2021;(3):52-62. (In Russ.) https://doi.org/10.31660/0445-0108-2021-3-52-62
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