Well tubing coupling system

Details Well tubing coupling system Well tubing coupling system

1978-07-20

1980-12-02

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

Guide and support

166189, 285 86, 285137A, F16L 3900

Patent

active

042367344

ABSTRACT:
A well bore tubing system for releasably coupling upper tubing strings with lower tubing strings. The system includes an orienting body connectible on the upper end of a well packer and having a pair of separate laterally spaced longitudinal bores, each having a locking recess and a seal surface, a longitudinal side orienting surface along the body, an upper end male guide surface leading to the orienting surface, an orienting head assembly to releasably couple with the orienting body comprising an orienting head having two longitudinal bores alignable with the bores in the orienting body and a lower end female guide surface engageable with the male surface on the orienting body, a longitudinal orienting arm secured on the guide head having a longitudinal orienting surface engageable with the orienting surface on the orienting body, and a tubular seal and latch assembly secured at one end in each of the bores of the orienting head. The orienting body is secured on a well packer set in a well bore supporting two lower tubing strings. Two upper tubing strings are connected with the orienting head assembly and run into the well bore until the orienting arm engages the orienting body turning the orienting head, upper tubing strings and seal and latch assemblies which are aligned with and telescoped into the bores of the orienting body locking the head assembly into the body. The upper tubing strings and head assembly may be pulled and rerun as desired.

REFERENCES:
patent: 891719 (1908-06-01), McMillan
patent: 3625281 (1971-12-01), Herd
patent: 3934648 (1976-01-01), Amancharla et al.
patent: 4067385 (1978-01-01), Schwager et al.

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