FIELD: mining.
SUBSTANCE: wellbore system comprises an upper deflecting wedge located inside the main wellbore and the defining first and second channels extending longitudinally through the upper deflecting wedge; a lower deflecting wedge located inside the main wellbore and spaced from the upper deflecting wedge at a predetermined distance, the lower deflecting wedge defines the first casing column communicating with the lower part of the main wellbore and the second casing column communicating with the auxiliary wellbore; and a male hub comprising a housing, a male hub tip disposed at the distal end of the housing, and a reducer coupling disposed around the housing, wherein one of the male hub tip and the reducer coupling is movable along the axis in order to vary the length of the male hub tip. The upper and lower deflecting wedges are arranged to direct the male hub either to the auxiliary wellbore or to the lower part of the main wellbore, following on from the length of the male hub tip compared to the predetermined distance.
EFFECT: precise input is provided into more than one multilateral well offshoot.
21 cl, 25 dwg
