INTERSECTION OF MULTI-SHAFT WELL WITH USE OF MECHANICAL ELEMENTS OF STIFFENESS Russian patent published in 2018 - IPC E21B17/02 E21B19/16 

FIELD: mining.

SUBSTANCE: well system comprises a main wellbore and a side wellbore extending from the main wellbore at the intersection, a deflector located in the main wellbore or near the intersection, a multi-shaft intersection capable for passing inside the main wellbore, at least one mechanical stiffness element passing in the longitudinal direction between the connector case and D-shaped round connector mounted on one of the sections: on the section of the main well or on the section of the side well. The multi-shaft intersection contains a connector body, a section of the main well attached to the connector body in the receiving nest of the main well section, and a side well section attached to the connector body in the receiving nest of the side well section. The main well section and the side well section are circular tubular structures.

EFFECT: maintaining alignment of sections of the main and side wells.

25 cl, 12 dwg