Dual string tension-set, tension-release well packer
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United States of America Patent
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-
Apr 3, 1990
Issued Date -
N/A
app pub date -
Apr 1, 1986
filing date -
Nov 27, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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