Patent · US Active

Walking drilling rig

US9518429B2 · kind B2 · utility

12Cited by

11References

13Claims

0Family size

Assignee

Independence Contract Drilling, Inc. · US

Inventors

Fred Fortson · Houston, US
David Brown · Village of La Jolla, US

Key dates

Filing date	Oct 31, 2013
Grant date	Dec 13, 2016
Priority date	—
Expiry date	Apr 19, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B7/02
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An improved walking drilling rig is disclosed. The walking drilling rig includes a preassembled substructure that includes a first skid beam disposed parallel and spaced apart from a second skid beam. A plurality of crossbeams couple the first skid beam to the second skid beam, and a plurality of extendable legs are supported by the first and second skid beams. An elevatable drill floor is coupled to the plurality of extendable legs and includes a rotary table disposed between a pair of lateral platforms. Each lateral platform has a retracted position and an extended position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.