Method and apparatus for replacing a packer element

Details Method and apparatus for replacing a packer element Method and apparatus for replacing a packer element

1998-06-24

1999-10-05

Fox, John

Valves and valve actuation

Blow-out preventers

166277, E21B 3306

Patent

active

059610948

ABSTRACT:
A method and a device for replacing a seal element in an undersea blowout preventer is provided. A complete system includes a control center on the surface, an umbilical from the control center to a remotely operated vehicle (ROV), and a seal element carrier manipulated by the ROV. The carrier includes either retrieving tool or a running tool, which retains a cartridge which is to be inserted into or has been retrieved from a BOP. The cartridge is split along a vertical plane, with each half of the cartridge becoming a temporarily integral part of a pipe ram on either side of the BOP. Alignment ramps on the cartridge mate with complementary surfaces on the respective faces of the pipe rams.

REFERENCES:
patent: 3741296 (1973-06-01), Murman et al.
patent: 4007905 (1977-02-01), Mott
patent: 4133342 (1979-01-01), Carnahan
patent: 5590867 (1997-01-01), Van Winkle

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