Title:
PACKING ASSEMBLY FOR ROTARY DRILLING SWIVELS
Document Type and Number:
WIPO Patent Application WO2002101191
Kind Code:
A3
Abstract:
A packing assembly (40c) for use with a rotary swivel having a cylindrical wash pipe (18), The cylindrical wash pipe (18) comprises a housing assembly that includes a packing gland (42c). The packing gland (42c) possesses a chamber (46c) to permit a sealing assembly (120), which circumscribes the washpipe (18). Furthermore, the packing gland (42c) includes an injection port (58) that is in open communication with the chamber (46c). The sealing assembly (120), which is disposed in the chamber (46c), includes a first annular seal ring (138) and a containment member (138) that are both in sealing engagement with the washpipe (18). The first annular seal ring (138) is axially spaced from the containment member (138). Injectable packing composition (140) is posited between the first annular seal ring (138) and the containment member (138); additionally, the injectable packing composition (140) is in sealing engagement with the wash pipe (18). Finally, the wash pipe (18) and the packing assembly (40c) are rotatable relative to the other.
Inventors:
PIPPERT FREDERICK B (US)
Application Number:
PCT/US2002/018500
Publication Date:
March 06, 2003
Filing Date:
June 11, 2002
Export Citation:
Assignee:
UTEX IND INC (US)
PIPPERT FREDERICK B (US)
PIPPERT FREDERICK B (US)
International Classes:
E21B21/02; (IPC1-7): E21B3/04; E21B33/03; F16J15/18; F16L17/00
Foreign References:
| US6007105A | 1999-12-28 | |||
| US4384726A | 1983-05-24 | |||
| US2394800A | 1946-02-12 | |||
| US2459472A | 1949-01-18 | |||
| US5823541A | 1998-10-20 |
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