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1. (WO2018125054) DOWNHOLE MACHINING TOOL

Pub. No.:    WO/2018/125054    International Application No.:    PCT/US2016/068733
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 28 00:59:59 CET 2016
IPC: E21B 23/00
E21B 11/00
E21B 41/00
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: ZHANG, Lizheng
Title: DOWNHOLE MACHINING TOOL
Abstract:
A rotary tool for machining a material in a downhole environment, includes a drive train, a lead screw connected to and rotatable by the drive train, a linear block engaged with but not rotatable by the lead screw so as to convert the rotation of the lead screw into linear motion, a machining tool rotatable by the lead screw and movable linearly by the linear block to machine the material, and where the machining tool machines the material in a series of steps.