Wells – Packers or plugs – With expanding anchor
Patent
1986-01-16
1987-10-06
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166136, 166182, E21B 33128
Patent
active
046976400
ABSTRACT:
Apparatus for sealing a well bore annulus. A mandrel includes non-elastomeric packer elements disposed thereabout. A first annular piston is received about the mandrel and is slidable upwardly against the packer elements to seal the same in a well bore. A bi-directional slip assembly is disposed about the lower portion of the mandrel and a second annular piston is slidable along the mandrel above the slip assembly for setting the same in response to downward piston action. The mandrel includes a pair of bores for communicating internal mandrel pressure to both pistons. An increase in mandrel pressure causes the first piston to move upwardly thereby sealing the packer elements in the bore and causes the second piston to move downwardly thereby setting the slips.
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Duzan James R.
Halliburton Company
Neuder William P.
Novosad Stephen J.
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