Variable bore ram

Details Variable bore ram Variable bore ram

2005-12-13

2005-12-13

Pickard, Alison K. (Department: 3673)

Seal for a joint or juncture

Seal for well apparatus

For overpressure control device

C251S001200

Reexamination Certificate

active

06974135

ABSTRACT:
A ram type blowout preventer includes variable ram packers for sealing about tubulars of different outside diameters in the bore of the preventer housing or about a single tubular having a variable outside diameter. Each ram packer includes a body of elastomeric material formed about vertical ribs to conform to tubular having variable OD within a certain range.

REFERENCES:
patent: 2749078 (1956-06-01), Losey
patent: 3897038 (1975-07-01), LeRouax
patent: 3897071 (1975-07-01), Le Rouax
patent: 3917293 (1975-11-01), Lewis et al.
patent: 4229012 (1980-10-01), Williams, III
patent: 4444404 (1984-04-01), Parks, Jr.
patent: 5005802 (1991-04-01), McWhorter et al.
patent: 5294088 (1994-03-01), McWhorter et al.
patent: 6089526 (2000-07-01), Olson
patent: 6367804 (2002-04-01), Watts
patent: 6857634 (2005-02-01), Araujo

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