Title:
SNUBBING UNIT WITH IMPROVED SLIP ASSEMBLY
Document Type and Number:
WIPO Patent Application WO2003031243
Kind Code:
A3
Abstract:
An improved snubbing unit including a snubbing unit base (2), a lifting assembly (8) having a platform positioned above the base, a rotary table positioned on the snubbing unit, and a first slip assembly (1) positioned on the rotary table. The first slip assembly further includes a base plate with a center aperture formed therein, at least two separate slip frames (3) positioned on the base plate around the center aperture, wherein each of the slip frames includes a slip surface, and a die carrier (7) positioned within each of the slip frames, wherein each of the die carriers (7) also includes a surface (30) for engagement with the slip surfaces of said slip frames. Additionally, a second slip assembly will be positioned on the snubbing unit.
Inventors:
BUCK DAVID A (US)
Application Number:
PCT/US2002/030204
Publication Date:
November 06, 2003
Filing Date:
September 24, 2002
Export Citation:
Assignee:
BUCK DAVID A (US)
International Classes:
B65H59/10; E21B19/10; B60T; (IPC1-7): B65H59/10
Foreign References:
| US1856905A | 1932-05-03 | |||
| US1794273A | 1931-02-24 | |||
| US3748702A | 1973-07-31 | |||
| US5451084A | 1995-09-19 | |||
| US6223629B1 | 2001-05-01 |
Other References:
See also references of EP 1444157A4
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