VMP Riser release tool

Details VMP Riser release tool VMP Riser release tool

1979-09-04

1981-07-14

Jones, Jr., James L.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29237, 285 39, 294 94, B23P 1904

Patent

active

042778751

ABSTRACT:
A releasing tool for use in disconnecting a casing or conductor pipe cemented below the marine floor from a riser pipe supported from a floating vessel in which the riser pipe and conductor are held together by a snap ring. This includes cam carrier connectable to the lower end of a longitudinal member, such as a drill pipe, and a releasing pin block carrying radially supported releasing pins which are urged inwardly. When the cam of the cam carrier is urged downwardly with respect to the releasing pin block it forces the releasing pins outwardly through ports in the latch pin of the casing to release the split rings from its engaging position.

REFERENCES:
patent: 526589 (1894-09-01), Sullivan
patent: 4082321 (1978-04-01), Nakajima et al.
patent: 4138148 (1979-02-01), Zaremba

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