Remote cementing plug launching system

Wells – Pistons – fluid driven into well – With downflow past piston

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Details

166153, 166285, E21B 3316

Patent

active

046243127

ABSTRACT:
The present invention comprises an improved remote cement plug launching system including guide tube means associated with the cementing plugs, which guide tube means are adapted to guide plug release darts to seats in said plugs.

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patent: 4194765 (1980-03-01), Reddy
patent: 4479544 (1984-10-01), Callihan et al.
patent: 4487263 (1984-12-01), Jani

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