Dual string tension-set, tension-release well packer

Details Dual string tension-set, tension-release well packer Dual string tension-set, tension-release well packer

1986-04-01

1990-04-03

Dang, Hoang C.

Wells

Packers or plugs

With expanding anchor

166119, 166134, 166313, 166387, E21B 33122

Patent

active

049132288

ABSTRACT:
A dual string well packer which is anchored at a downhole location within the bore of a well casing string by relative longitudinal movement between the primary tubing string and the secondary tubing string. The well packer is set by applying tension via the secondary string. The well packer is released from its downhole location by applying tension via the primary string. The invention is particularly adapted for use in well completions that are subject to thermocycling such as steam injection wells. However, the anchoring and releasing mechanism of the present invention can be readily adapted for use with any dual string well packer. The present invention includes an improved method for well completion, minimizing tubing handling requirements during the installation and removal of the production tubing strings and associated dual string well packer.

REFERENCES:
patent: 2999544 (1961-09-01), Conrad et al.
patent: 3094168 (1963-06-01), Myers
patent: 3167127 (1965-01-01), Sizer
patent: 3170518 (1965-02-01), Brown
patent: 3198254 (1965-08-01), Wise et al.
patent: 3326292 (1967-06-01), Young et al.
patent: 3330360 (1967-07-01), Young
patent: 3335800 (1967-08-01), Myers
patent: 3336983 (1967-08-01), de Rochemont
patent: 3357489 (1967-12-01), Brown
patent: 4403654 (1983-09-01), Haynes
patent: 4413677 (1983-11-01), Perkins
patent: 4457369 (1984-07-01), Henderson
Otis Engineering Corporation Drawing 12DTS7000.
Page Describing Otis DTS Dual Tension Packer.
1980-81 Composite Catalog pp. 5970 & 5971.

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