Blowout preventer string support

Details Blowout preventer string support Blowout preventer string support

1987-03-23

1991-04-23

Oberleitner, Robert J.

Brakes

Rod

251 13, 2941022, E21B 3306

Patent

active

050092898

ABSTRACT:
An improved string support apparatus used with a ram type blowout preventer in which improved gripping assemblies, each having a bowl body and gripping elements, are positioned in the front face packer recess or recess of the rams which is normally occupied by a ram packer. In such rams, a top seal is used and positioned in a groove in the ram body which extends from side to side across the top of the ram body and the packer extends across the face of the ram and has pins at each side extending into openings in the ram body which are engaged and secured by pins extending from the top seal into openings which intersect with the openings for the packer pins. The bowl body has the general shape of the back of the packer so that it fits into the packer slot in the ram body and it also includes the pins which extend into the openings in the ram body at each side which are secured in place by engagement with the top seal pins. Gripping members or slips are positioned on the arcuate tapered front face of the bowl body and are free to move vertically thereon. The gripping members are biased upwardly by springs. This provides gripping assemblies which are easily and quickly substituted for the packers in the rams of a ram type blowout preventer.

REFERENCES:
patent: 1548265 (1925-08-01), Hall
patent: 2542302 (1951-02-01), Barker
patent: 3017931 (1962-01-01), Jackson et al.
patent: 3472535 (1969-10-01), Kinley
patent: 4403389 (1977-08-01), Cobb
patent: 4647002 (1987-03-01), Crutchfield

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