E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/17
E21B 7/12 (2006.01)
Patent
CA 1062149
ABSTRACT A trip plug for operating a stage cementing collar used in a well casing. The trip plug serves a dual functions of actuating the stage collar and closing the ports thereof following the explusion of the cement slurry into the annulus of the well bore.
324428
Scott Lyle B.
LandOfFree
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