Cementing plug

Details Cementing plug Cementing plug

1986-09-04

1988-07-12

Suchfield, George A.

Wells

Pistons, fluid driven into well

166202, 166291, E21B 3316

Patent

active

047563656

ABSTRACT:
A wiper for a wellbore plug which is rigid for breaking off breakaway members and wellbore plug having a first wiper flexible enough to bypass breakaway members and a second wiper rigid enough for breaking off the bypassed members.

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patent: 4429746 (1984-02-01), Allard
American Petroleum Institute, "Oil Well Cementing Practices in the United States", p. 112 (1959).

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