Wiper plug with packer

Details Wiper plug with packer Wiper plug with packer

2006-08-29

2006-08-29

Suchfield, George (Department: 3676)

Wells

Processes

Cementing, plugging or consolidating

C166S153000, C166S192000, C166S297000, C166S386000, C166S387000

Reexamination Certificate

active

07096949

ABSTRACT:
A self-retaining cementing wiper plug with a packer element 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. The packer element in the wiper plug is actuated when the plug is supported by an obstruction under the plug and then compressed, the packer being maintained in compression by the holddown fingers.

REFERENCES:
patent: 2305282 (1942-12-01), Taylor, Jr. et al.
patent: 2791278 (1957-05-01), Clark, Jr.
patent: 4078810 (1978-03-01), Arendt
patent: 4671358 (1987-06-01), Lindsey, Jr. et al.
patent: 5323858 (1994-06-01), Jones et al.
patent: 5735348 (1998-04-01), Hawkins, III

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