Application

Mechanical internal cutter is designed to cut and retrieve part of pipe string during well interventions and overhaul.

Design

The cutter consists of a body, knives, knife releasing block, and anchor. 
The cutter is available in left- and right-hand configurations.
When cutting depth is reached, rotate the string to the right to actuate the cutter. While rotating the string to the right (10-18 rpm), slowly and gradually lower the string, every 1-3 mm, observing the weight indicator. 
It takes 5-10 minutes to cut a pipe. Severed part has no burrs, defects and is ready to be engaged and recovered by an overshot. 
Inclined ports in the top sub allow for knives cooling and cuttings removal. 

All sizes are for reference only. Customizable top connection.