Split nut in blowout preventer

Details Split nut in blowout preventer Split nut in blowout preventer

1985-02-12

1986-03-11

Moon, Charlie T.

Wells

Above ground apparatus

Well caps or casing heads

29450, 29463, 29526R, 74127, 251 13, 411432, B32B 3100, G01M 100

Patent

active

045748810

ABSTRACT:
An improved split nut for use in blowout preventers temporarily installed on oil or gas wells is formed by fastening a base and a cap together. Fastening bolts are inserted through holes in the cap and in packing inserts in the base, and threaded into fastening nuts positioned within recesses in the base. Plugs seal the recesses from corrosive materials and hold the fastening nuts in position for convenient assembly. The packing inserts are compressed when the fastening nuts and bolts are tightened to seal the threads of the fastening bolts and nuts from corrosive materials that may seep through the cap holes.

REFERENCES:
patent: 667277 (1901-02-01), Williams
patent: 1675326 (1928-07-01), Blanding
patent: 1989429 (1935-01-01), Segelhorst et al.
patent: 2291846 (1942-08-01), Taylor
patent: 2881997 (1959-04-01), McMahan, Sr.
patent: 2897895 (1959-08-01), Ortloff
patent: 3731504 (1973-05-01), Belknap
patent: 3799292 (1974-03-01), Katz
patent: 3941141 (1976-03-01), Robert
patent: 4290577 (1981-09-01), Olson
patent: 4398729 (1983-08-01), Bishop

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