Pump down cement retaining device

Details Pump down cement retaining device Pump down cement retaining device

2011-01-04

2011-01-04

Suchfield, George (Department: 3676)

Wells

Processes

Cementing, plugging or consolidating

C166S155000, C166S156000, C166S177400, C166S193000, C166S376000

Reexamination Certificate

active

07861781

ABSTRACT:
A wall casing cement plug assembly includes a receptacle with an axial passage. The receptacle is pumped to a lower end of the casing string and locked in place. The receptacle has a casing seal that engages the string of casing and a retainer mechanism on its exterior that engages a profile in the string of casing. Cement is pumped through the receptacle by rupturing a blocking device in the axial passage of the receptacle. A wiper plug is pumped down the string casing. The wiper plug has a prong on its lower end that stabs into the axial passage of the receptacle. A latch located in the lower portion of the receptacle locks the wiper plug to the body.

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