Seal apparatus

Details Seal apparatus Seal apparatus

1989-12-18

1990-09-11

Dang, Hoang C.

Wells

Above ground apparatus

Releasable seal or cleaner disengaged by projection on inner...

166 84, 175195, 277 31, 277192, E21B 3302

Patent

active

049554360

ABSTRACT:
A stripper rubber or rubber seal apparatus such as used in drilling operations which includes a pair of transversely mating rubber elements which are cooperable to encompass a drill string and are carried by a diametrically split clamp ring that is engageable with a mounting ring carried by the drilling apparatus in a manner that the mating rubber elements may be brought simultaneously into sealing engagement with the mounting ring and into mating sealed engagement with each other about a drill pipe or other ancillary structure such as a rotary drive bushing.

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