Expandable packer with mounted exterior slips and seal

Wells – Processes – Placing or shifting well part

Reexamination Certificate

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Details

C166S134000, C166S179000, C166S206000

Reexamination Certificate

active

07387170

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: 2373005 (1945-04-01), Baker
patent: 2584448 (1952-02-01), Hern
patent: 2751013 (1956-06-01), Conrad
patent: 2785758 (1957-03-01), Baker
patent: 3155164 (1964-11-01), Keener
patent: 3477506 (1969-11-01), Malone
patent: 4457369 (1984-07-01), Henderson
patent: 6378606 (2002-04-01), Swor et al.
patent: 6446717 (2002-09-01), White et al.
patent: 6481497 (2002-11-01), Swor et al.
patent: 6513600 (2003-02-01), Ross
patent: 6536520 (2003-03-01), Snider et al.
patent: 7017669 (2006-03-01), Johnston et al.
patent: 2005/0028989 (2005-02-01), Doane et al

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