PIPE CUTTING DEVICE ON FLOWING WELL MOUTH Russian patent published in 2015 - IPC E21B29/00 

FIELD: oil and gas industry.

SUBSTANCE: device includes a frame with a table, a rotation drive and two cutting tool supply mechanisms. The frame is made in the form of a fixed annular housing, includes four supports inside it from below in four radial bores of the housing and its rectangular vertical recesses located along the perimeter of the central hole of the housing and coaxially to its bores; the above four supports are made as mating parts to the bores and recesses of the housing and provided with adjustment screws, prismatic stops with cross-shaped corrugations on the working surfaces and spacers providing attachment of the device for cutting pipes of different diameters. From above the frame there located is a table rotating on rollers arranged on rolling bearings of eccentric axes of the frame and made as an integral part of a gear rim of an external gear connection. The frame and the table are detachable and have a possibility of disconnection and connection of their halves at alignment of the division plane of the table with the division plane of the frame with fixation of their combined position. Each of the two mechanisms for supply of the cutting tool is provided with two types of slides and holders with cutter inserts.

EFFECT: reducing overall dimensions and weight of the device; enlarging technological capabilities.

6 cl, 17 dwg