Emergency downhole disconnect tool

Details Emergency downhole disconnect tool Emergency downhole disconnect tool

1993-04-21

1994-06-28

Bui, Thuy M.

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

166377, E21B 2300

Patent

active

053238532

ABSTRACT:
An emergency downhole disconnect tool for use in a drilling well conduit having hydraulic pressure activated and electricity activated means for disconnecting the tool from the drilling assembly by disconnecting telescoping first and second releasably connected parts.

REFERENCES:
patent: 4375237 (1983-03-01), Churchman
patent: 4535842 (1985-08-01), Ross
patent: 5050682 (1991-09-01), Huber et al.
patent: 5133412 (1992-07-01), Coronado
patent: 5257663 (1993-11-01), Pringle et al.

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