Method and apparatus for recovery of subsea well equipment

Details Method and apparatus for recovery of subsea well equipment Method and apparatus for recovery of subsea well equipment

1977-06-23

1980-01-01

Leppink, James A.

Wells

Submerged well

Means removably connected to permanent well structure

166297, 166299, 166 55, E21B 712, E21B 4301

Patent

active

041811968

ABSTRACT:
Method and apparatus are disclosed for recovering submerged equipment, such as a guide base and wellhead used in offshore well operations. A recovery tool, which includes an elongated member capable of extending from above the equipment into a well pipe and means for latching the recovery tool to the equipment and explosive means attached to the elongated member for severing the well pipe, is lowered from the water's surface to the equipment and then latched thereto. The explosive is then detonated to sever the well pipe. The recovery tool, together with the equipment and severed portion of the well pipe, is raised to the water's surface.

REFERENCES:
patent: 3057295 (1962-10-01), Christopher
patent: 3145775 (1964-08-01), McCarty
patent: 3163217 (1964-12-01), Haeber
patent: 3376927 (1968-04-01), Brown
patent: 3983936 (1976-10-01), Kennard et al.
patent: 3987638 (1976-10-01), Burkhardt
patent: 4042019 (1977-08-01), Henning

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