Wells – Packers or plugs – With expanding anchor
Patent
1985-06-27
1987-03-10
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166134, 166183, E21B 2306
Patent
active
046484469
ABSTRACT:
A packer type bridge plug for use in wells which may be set upon a wireline and retrieved upon a tubing string. The retrieval of the bridge plug is facilitated by the positive retraction of the upper and lower wedge members from beneath the slips during the retrieval process.
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Caskey Kenneth D.
Fore William M.
Duzan James R.
Halliburton Company
Neuder William P.
Novosad Stephen J.
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