Self-anchoring cementing wiper plug

Details Self-anchoring cementing wiper plug Self-anchoring cementing wiper plug

2005-10-04

2005-10-04

Bagnell, David (Department: 3672)

Wells

Pistons, fluid driven into well

C166S156000

Reexamination Certificate

active

06951246

ABSTRACT:
A self-retaining cementing wiper plug has two or more steel or carbide tipped holddown fingers or slips extending radially outward from the plug for engaging the inner surface of the casing and preventing the plug from moving uphole over time and potentially interfering with other downhole apparatus such as a pump.

REFERENCES:
patent: 4756365 (1988-07-01), Schneider
patent: 5095988 (1992-03-01), Bode
patent: 5323858 (1994-06-01), Jones et al.
patent: 5522458 (1996-06-01), Watson et al.
patent: 6237686 (2001-05-01), Ryll et al.
patent: 6739398 (2004-05-01), Yokley et al.
patent: 2004/0104025 (2004-06-01), Mikolajczyk
http://www.workover.co.uk/c...20online%20training%20balance%20plug.htm, Aug. 1, 2002, 2 pages.
http://www.workover.co.uk/casingstrings/casing%20online%20training%20production.htm, Jun. 19, 2002, 2 pages.
Halliburton Energy Services, Inc. product information,Plug Setting Aids, Nov. 1997, 2 pages.

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