Diverter/bop system and method for a bottom supported offshore d

Details Diverter/bop system and method for a bottom supported offshore d Diverter/bop system and method for a bottom supported offshore d

1984-12-24

1987-03-03

Leppink, James A.

Wells

Processes

Assembling well part

166386, 166 86, 166 88, E21B 3306

Patent

active

046468447

ABSTRACT:
A system adapted for alternative use as a diverter or a blowout preventer for a bottom supported rig and adapted for positioning beneath a rotary table of the drilling rig is disclosed. The system comprises a fluid flow controller and at least two bases adapted for being alternatively removably secured to the controller. When the first base is in combination with the fluid flow controller, the system may be used only as a diverter and when the second base is used in combination with the fluid flow controller the system may be used only as a blowout preventer. A method according to the invention includes steps for installing the system adapted for alternative connection as a diverter or a blowout preventer for a bottom supported drilling rig after structural casing has been set in a borehole.

REFERENCES:
patent: 3347567 (1967-10-01), Watkins
patent: 3465817 (1969-09-01), Vincent
patent: 3647245 (1972-03-01), Hanes et al.
patent: 3791442 (1974-02-01), Watkins
patent: 3889747 (1975-06-01), Regan et al.
patent: 4138148 (1979-02-01), Zaremba
patent: 4434853 (1984-03-01), Bourgeois
patent: 4444250 (1984-04-01), Keithahn et al.
patent: 4444401 (1984-04-01), Roche et al.
patent: 4456062 (1984-06-01), Roche et al.
patent: 4456063 (1984-06-01), Roche

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