Variable bore ram

Details Variable bore ram Variable bore ram

E - Fixed Constructions

21

B

E21B 33/06 (2006.01) E21B 33/12 (2006.01)

Patent

CA 2472792

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.

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