Wells – Pistons – fluid driven into well
Reexamination Certificate
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.
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http://www.workover.co.uk/c...20online%20training%20balance%20plug.htm, Aug. 1, 2002, 2 pages.
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Halliburton Energy Services, Inc. product information,Plug Setting Aids, Nov. 1997, 2 pages.
Doyle John P.
Tessier Lynn P.
Weber James L.
Bagnell David
Goodwin Sean W.
MSI Machineering Solutions Inc.
Stephenson Daniel P
Thompson Linda M.
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