Title:
INTEGRATED MAST AND TOP DRIVE FOR DRILLING RIG
Document Type and Number:
WIPO Patent Application WO2004067898
Kind Code:
A3
Abstract:
A process to lower or raise a drilling rig for transportation wherein the drilling rig includes a mast and a top drive. The process to lower includes the steps of moving the top drive within the mast with a vertical guide and torque reaction mechanism to a locked position and locking the top drive to the mast with a locking mechanism. The mast and the top drive are lowered together from a vertical position to a horizontal position. The combined mast and top drive may then be transported in the horizontal position without disconnecting electrical, mud line or other services.
Inventors:
ORR ALAN
DOTSON GEORGE
DOTSON GEORGE
Application Number:
PCT/US2004/000884
Publication Date:
October 14, 2004
Filing Date:
January 12, 2004
Export Citation:
Assignee:
HELMERICH & PAYNE (US)
International Classes:
E21B7/02; E21B15/00; (IPC1-7): E21B7/02
Domestic Patent References:
| WO2000011306A2 | 2000-03-02 |
Foreign References:
| EP1176283A2 | 2002-01-30 | |||
| CA1169627A | 1984-06-26 | |||
| US4899832A | 1990-02-13 |
Other References:
MEHRA S. & BRYCE T.: "Innovative Technology for a Cost Effective Land Rig", SPE 35046, 12 March 1996 (1996-03-12), XP002286559
"Contractors building state-of-the-art land rigs", DRILLING CONTRACTOR SEPT/OCT 2002, 1 September 2002 (2002-09-01), XP002286703
ANONYMOUS: "Rig Integration", ESTEC OILFIELD, XP002286704, Retrieved from the Internet [retrieved on 20040630]
"Contractors building state-of-the-art land rigs", DRILLING CONTRACTOR SEPT/OCT 2002, 1 September 2002 (2002-09-01), XP002286703
ANONYMOUS: "Rig Integration", ESTEC OILFIELD, XP002286704, Retrieved from the Internet
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