Coiled tubing deployed inflatable stimulation tool

Details Coiled tubing deployed inflatable stimulation tool Coiled tubing deployed inflatable stimulation tool

1992-05-13

1993-12-21

Britts, Ramon S.

Wells

Packers or plugs

With central conduit and fluid port to space outside

166187, 166191, E21B 33127

Patent

active

052714616

ABSTRACT:
An inflatable stimulation tool designed to be deployed by coil tubing having a shuttle valve which reciprocates within the bore of a tubular mandrel. The shuttle valve, in cooperation with a reciprocally movable outer mandrel which is disposed about an inner mandrel, opens and closes various ports in the device to alternately seal and unseal the inflatable packer element. The shuttle valve also operates to open and close a flow passage through the inner mandrel to permit the passage of various stimulation fluids through the tool and into the well bore.
Upon deflation of the inflatable packing means, which leaves the packing means in a somewhat distended state, the element is urged to its original close relationship with the mandrel by a return spring which cooperates with the lower tool structure to which one end of the rubber packing element is clamped to longitudinally stretch the element.

REFERENCES:
patent: 2611437 (1952-09-01), Lynes
patent: 4424860 (1984-01-01), McGill
patent: 4440226 (1984-04-01), Suman, Jr.
patent: 4708208 (1987-11-01), Halbardier
patent: 4711301 (1987-12-01), Stringfellow
patent: 4776396 (1988-10-01), Studholme
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patent: 4928759 (1990-05-01), Siegfried, II et al.
patent: 4951747 (1990-08-01), Coronado
patent: 5020592 (1991-06-01), Muller et al.
1990-1991 Composite Catalog of Oil Field Equipment and Services, World Oil, Houston, Texas.

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