Sequential remote control plug release system

Wells – Processes – Cementing – plugging or consolidating

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Details

166 53, 166 70, 166153, 166250, E21B 3316

Patent

active

050406035

ABSTRACT:
A sequential remote control plug release system allows actuation of plug release plungers and manifold valves associated with a cementing plug container only in a predetermined sequence. With regard to a plug container having two plugs, and thus two plug release plungers, and three manifold valves, the middle and upper manifold valves and the upper plug release plunger can be opened and retracted only in a predetermined sequence. This is implemented through interconnected actuation valves and sequencing valves contained in a housing which can be located remotely from the plug container. An improvement in plug release plungers is also disclosed.

REFERENCES:
patent: 2615519 (1952-10-01), Carr
patent: 2620037 (1952-12-01), McClendon
patent: 3322197 (1967-05-01), Baker et al.
patent: 3971436 (1976-07-01), Lee
patent: 4427065 (1984-01-01), Watson
patent: 4674573 (1987-06-01), Bode
patent: 4782894 (1988-11-01), LaFleur
LaFleur Petroleum Services Brochure Which Begins "Now . . . A Safe, Sure and Proven Cementing Head That Permits Positive Plug Drop With Continuous Cement Flow.", Believed To Be Published More Than One Year Prior To Apr. 27, 1990.
LaFleur Petroleum Services Brochure With Front Page Containing The Word "Fasdrop", Believed To Be Published More Than One Year Prior To Apr. 27, 1990.
Halliburton Company Technical Data Sheet C-1152, "Remote Control For Release Of Cementing Plug" dated Nov., 1965.

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