Coiled tubing set inflatable packer, bridge plug and releasing t

Details Coiled tubing set inflatable packer, bridge plug and releasing t Coiled tubing set inflatable packer, bridge plug and releasing t

1991-01-18

1992-09-01

Neuder, William P.

Wells

Packers or plugs

Expanded by confined fluid from central chamber, pump or...

166182, 277 34, E21B 33127

Patent

active

051430150

ABSTRACT:
A coiled tubing set inflatable packer, bridge plug and releasing tool therefor. The packer and bridge plug comprise an adapter with a mandrel slidably disposed therein. A pressure actuated piston releases a locking ball between the mandrel and adapter during an inflation cycle and allows movement of the mandrel such that the locking ball again locks the mandrel and adapter when the mandrel is moved to a sealed position wherein the inflatable packer element is sealingly closed. The inflatable packer of the present invention comprises a valve for opening a central passageway through the packer. A J-slot in the packer allows a plurality of inflation cycles to insure proper setting of the packer prior to actuation of the valve. The bridge plug of the present invention comprises a bypass passage therethrough which may be opened by upward movement of a central mandrel. A releasing tool is provided for releasing the packer or bridge plug in the well bore after setting of the packer element. A releasing plug or releasing ball is used to move a releasing mandrel and disengage locking dogs from an overshot on the releasing tool so that the releasing tool may be removed from the well bore.

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"Thru-Tubing Straddle Packer Expands, Seals In Casing", Ocean Industry, Feb. 1989, pp. 44-45.
Tam International Publication "Tam-J Inflatable Workover/Testing Packers And Accessories Ordering Guide-Jan. 1986".
Tam International Publication "Tam-J Heavy-Duty Inflatable Packers For Well Testing, Workovers, and Production" (1986).
Lynes 1978-1979 Catalog, pp. 18, 19, 22 and 23.

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