FIELD: oil and gas industry.
SUBSTANCE: group of inventions refers to mining and can be used for selective flow regulation in a multilateral well. Pipe string system is formed for selective regulation of separate fluid mix flows with varying speeds for well construction, injection or production of mixes of fluids, gases and/or solid particles that can be injected to, or produced from one or several close zones of ground bore, ground cavern, hydrocarbon or geothermal reservoir. Fluid mix running through radial passage in distribution reducer of the pipe string system between the strings and at least one other pipe can be regulated by at least one flow regulation element connected to a concentric and/or annular passage closest to axis line. Fluid medium transfer can be adjusted selectively in different configurations of one or several mainly hydrocarbon and/or mostly water wells below the common main wellbore and wellhead equipment.
EFFECT: enhanced efficiency of flow regulation in a multilateral well.
20 cl, 123 dwg
