Wells – Central chamber sealed with respect to prepositioned... – Surrounding conduit carries packer or plug
Patent
1974-12-18
1976-01-27
Leppink, James A.
Wells
Central chamber sealed with respect to prepositioned...
Surrounding conduit carries packer or plug
166189, 285 25, 285137A, E21B 3312, F16L 3900
Patent
active
039346480
ABSTRACT:
A well tubing system for releasably coupling lower tubing strings with upper tubing strings in a well bore without rotation from the surface including a well packer on a plurality of lower tubing strings, a first flow coupling and guide sleeve on the upper end of the packer, and a second flow coupling and guide head on the lower ends of the upper tubing strings. The upper tubing strings and guide head are connected with and disconnected from the guide sleeve on the packer by longitudinal motion only. The guide head has spiral guide surfaces leading to a vertical orienting slot. The guide sleeve includes a guide lug which engages the guide head guide surfaces and slot to rotate the head and upper tubing strings to the desired orientation. In alternate forms of the invention means are provided for the running and retrieving of either one or both of the upper tubing strings independently of the other of the strings after the initial connection of the guide head into the guide sleeve in the well bore.
REFERENCES:
patent: 3693714 (1972-09-01), Baugh
patent: 3807497 (1974-04-01), Baugh
Amancharla Amareswar
Young Carter R.
Garland H. Mathews
Leppink James A.
Otis Engineering Corporation
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