Expandable packer with mounted exterior slips and seal

Wells – Packers or plugs

Reexamination Certificate

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Details

C166S134000, C166S206000

Reexamination Certificate

active

07493945

ABSTRACT:
A packer device includes a central packer mandrel and a radially surrounding expansion mandrel. At least one slip mandrel carrying wickers surrounds the expansion mandrel and is secured in place upon the expansion mandrel by an annular retaining ring. The slip mandrel is secured to the retaining ring by screw connectors that pass through the slip mandrel and into retainer segments. The retaining ring is clamped between the slip mandrel and segments. Additionally, the packer device carries a fluid seal that is made up of a thermoplastic material with elastomeric energizing elements.

REFERENCES:
patent: 3155164 (1964-11-01), Keener
patent: 3477506 (1969-11-01), Malone
patent: 6446717 (2002-09-01), White et al.
patent: 6513600 (2003-02-01), Ross
patent: 6691789 (2004-02-01), Jackson et al.
patent: 7017669 (2006-03-01), Johnston et al.
patent: 7128145 (2006-10-01), Mickey
patent: 2002/0014339 (2002-02-01), Ross
patent: 2002/0166672 (2002-11-01), White et al.
patent: 2003/0205386 (2003-11-01), Johnston et al.
patent: 2005/0217869 (2005-10-01), Doane et al.

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