Ooo “agd”

Gurban Gulam Ogly Veliev

Andrey A Ivanov

Aleksey V Sidorenko

Dmitriy A Priymachenko

The device is designed for borehole reaming during casing&#x2014;casing reamer shoes mounted in the conductor guide hole of a string or liner. The casing reamer shoe has a sub connected via a sleeve with a spiral mandrel having at least one screw groove, and a mandrel with a drill shoe located at one end thereof, and a pipe with at least one pin at the other end. The mandrel is mounted movably on the spiral mandrel inside a case being rigidly connected to the sub. The pin is arranged in the groove. The cross section of the screw groove has a shape of a trapezoid expanding in the direction of the longitudinal axis of the shoe. The pin has a stepped cylindrical shape with a conical transition. The device increases reliability and lifetime of the casing reamer shoe due to the shape of the grooves and pins.

Growing community of inventors

Moscow, Russia

Gurban Gulam Ogly Veliev