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1. (WO2018013258) MAST AND SUBSTRUCTURE

Pub. No.:    WO/2018/013258    International Application No.:    PCT/US2017/036196
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Wed Jun 07 01:59:59 CEST 2017
IPC: E04B 1/344
E04B 1/35
E04B 1/36
E04B 1/38
E04H 12/34
E21B 7/02
E21B 15/00
Applicants: NABORS DRILLING TECHNOLOGIES USA, INC.
Inventors: REDDY, Padira
GUPTA, Ashish
HAUSE, Ryan
Title: MAST AND SUBSTRUCTURE
Abstract:
A drilling rig may include a right substructure, left substructure, and a drill floor. The drill floor may be pivotably coupled to lower boxes of the left and right substructure by struts. The substructures may include hydraulic cylinders positioned to raise the drill floor and a mast coupled to the drill floor into a raised position.