Well fluid loss plug assembly and method

Details Well fluid loss plug assembly and method Well fluid loss plug assembly and method

1992-05-06

1994-06-14

Bagnell, David J.

Wells

Processes

Placing or shifting well part

166181, 166192, 166237, E21B 3312, E21B 2302

Patent

active

053201760

ABSTRACT:
A well servicing assembly utilizes a plug mechanism for preventing fluid loss into a formation. The assembly includes a string of tubing which carries a packer, a perforating gun, a running tool, and a latch assembly. After perforating, the operator pulls the tubing upward, leaving the packer in place. The latch assembly engages the packer. The latch assembly has a plug contained therein which prevents downward flow of fluid through the packer as the tubing string is retrieved to the surface. After removing the perforating gun, the tubing string may be again lowered and re-engaged with the latch assembly. The latch assembly may be then repositioned below the packer.

REFERENCES:
patent: 3011549 (1961-12-01), Fredd et al.
patent: 3856081 (1974-12-01), Canalizo
patent: 4437522 (1984-03-01), Krause et al.
patent: 4576236 (1986-03-01), Stout et al.
patent: 4984631 (1991-01-01), Reesing

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