System and plug for plugging a conduit

Details System and plug for plugging a conduit System and plug for plugging a conduit

1989-06-19

1991-01-15

Dang, Hoang C.

Wells

Central chamber sealed with respect to prepositioned...

166123, 166126, 166181, 166192, 166237, 166332, E21B 2302, E21B 3414

Patent

active

049846310

ABSTRACT:
A system and a plug for plugging a well conduit. The plug includes a lock mandrel and a valve. There is a prong releasably connected in the plug. A running tool is adapted to releasably connect to the plug lock mandrel and prong. After the plug is lowered into a well conduit and installed in a landing nipple, upward releasing force on the running tool moves the prong upwardly closing the valve and plug to flow and the prong locks in valve closed position. Later, the prong may be disconnected and raised from the plug to surface, permitting pressure outside and inside the plug to equalize for retrival of the plug.

REFERENCES:
patent: 2806539 (1957-09-01), Green et al.
patent: 3208531 (1965-09-01), Tamplen
patent: 4373583 (1983-02-01), Waters
patent: 4437522 (1984-03-01), Krause, Jr. et al.
patent: 4479539 (1984-10-01), Tamplen et al.
patent: 4522259 (1985-06-01), Akkerman
patent: 4545434 (1985-10-01), Higgins
Otis Engineering Catalog OEC-5338 Cover, p. 126 (Subsurface Flow Control Completion Equipment), Back Cover-(No Date Shown).

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