Search International and National Patent Collections

1. (WO2018085850) SIDE-SADDLE CANTILEVER MAST

Pub. No.:    WO/2018/085850    International Application No.:    PCT/US2017/060429
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Wed Nov 08 00:59:59 CET 2017
IPC: E04H 12/34
E04B 1/343
E04H 12/00
E21B 7/02
E21B 15/00
Applicants: NABORS DRILLING TECHNOLOGIES USA, INC.
Inventors: GUPTA, Ashish
HAUSE, Ryan
REDDY, Padira
Title: SIDE-SADDLE CANTILEVER MAST
Abstract:
A side saddle slingshot drilling rig includes a right substructure and a left substructure, the substructures positioned generally parallel and spaced apart from each other. The right substructure includes a right lower box and a first strut, the first strut pivotably coupled to the drill rig floor and pivotably coupled to the right lower box. The left substructure includes a left lower box and a second strut, the second strut pivotably coupled to the drill rig floor and pivotably coupled to the left lower box. The side saddle slingshot drilling rig also includes a drill rig floor, the drill rig floor including a V-door. The side of the drill rig floor has the V-door defining the V- door side of the drill rig floor, the V-door side of the drill rig floor parallel to the right substructure. The side saddle slingshot drilling rig further includes a mast, the mast including an open side defining a mast V-door side. The open side is oriented to face perpendicular to the right substructure. The mast is pivotably coupled to the drill rig floor by one or more mast pivot points and one or more lower mast attachment points, the mast being pivotable in a direction parallel to the V-door side of the drill rig floor or the mast being pivotable in a direction perpendicular to V- door side of the drill rig floor. The mast includes two or more subunits, wherein the two or more subunits are pinned together.