Temporary abandonment cap and tool

Details Temporary abandonment cap and tool Temporary abandonment cap and tool

1990-11-14

1992-04-28

Neuder, William P.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166351, 4051951, E21B 33043

Patent

active

051079313

ABSTRACT:
A protective cap (12) can be run onto and retrieved from a subsea wellhead (10) from a floating service vessel. Slidably mounted shear pins (32) in the cylindrical wall (14) of the protective cap (12) allow the cap to be attached by a downward push. Retrieval of the protective cap (12) involves an overpull on the drill string that is sufficient to shear the pins (32) in the cylindrical wall (14).

REFERENCES:
patent: 3601188 (1971-08-01), McGlamery
patent: 3945213 (1976-03-01), Forbes et al.
patent: 4323118 (1982-04-01), Bergmann
patent: 4387771 (1983-06-01), Jones
patent: 4434853 (1984-03-01), Bourgeois
patent: 4600339 (1986-07-01), Castel
patent: 4960174 (1990-10-01), Rodrigues et al.
patent: 5005650 (1991-04-01), Hopper

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