Wells – Above ground apparatus – Releasable seal or cleaner disengaged by projection on inner...
Patent
1980-08-04
1982-04-27
Leppink, James A.
Wells
Above ground apparatus
Releasable seal or cleaner disengaged by projection on inner...
166 84, 175220, E21B 1710
Patent
active
043265847
ABSTRACT:
A stripper seal protection and operating tool sealing element and method for protecting stripper seals during drilling operations with operating tools having both polygonal and circular cross sections. The stripper seal protection and operating tool sealing element includes a lower protective sleeve for expanding the stripper seal radially outward to prevent contact with polygonal operating tools and includes a head portion integral therewith for mounting an elastic sealing ring for packing off on the polygonal operating tool. The protective sealing element is particularly useful for applications in diverter housings of the rotating insert type. The protective and sealing element is inserted and removed from the diverter coupling concurrently with polygonal operating tools such as kellies. The protective sealing element also includes rotating lock means to provide common rotation of the rotating insert with the kelly. Further, means are provided for biasing the sealing ring laterally outward to insure adequate sealing between the kelly and element head portion.
REFERENCES:
patent: 2808229 (1957-10-01), Bauer et al.
patent: 2927774 (1960-03-01), Ormsby
patent: 3227229 (1966-01-01), Wakefield, Jr.
patent: 3247914 (1966-04-01), Slack
patent: 3561723 (1968-05-01), Cugini
patent: 3791442 (1974-02-01), Watkins
patent: 3965987 (1976-06-01), Biffle
Felsman Robert A.
Leppink James A.
Regan Offshore International, Inc.
Smith Guy P.
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