Combination downhole tool

Details Combination downhole tool Combination downhole tool

1992-10-05

1994-09-20

Britts, Ramon S.

Wells

With junk retrieving means

166173, 166174, E21B 3100

Patent

active

053480864

ABSTRACT:
A combination clean-out and fishing tool for use under rotary power in a well bore. The tool is adapted for connection to the drill string by means of an elongated connector sub. The connector sub then carries a cylindrical sleeve thereon which houses a cylindrical hub secured within the sleeve by means of shear pins. A cylindrical extension then secures below the cylindrical sleeve to support a clean-out tool of selected type therebelow while the hub and extension sub carrying a selected fishing tool are inside the cylindrical extension. After rotary operation of the clean-out tool to expose the fish, sufficient weight jarring the drill stem shears the shear pins to lower the connector sub, hub, extension sub and fishing tool into rotary engagement with the fish.

REFERENCES:
patent: 1968282 (1934-07-01), Cavins
patent: 2090616 (1937-08-01), Erwin
patent: 2124772 (1938-07-01), Flury
patent: 2359717 (1944-10-01), Myers
patent: 2663370 (1953-12-01), Donnell et al.
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patent: 2696257 (1954-12-01), Clark
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patent: 2929452 (1960-03-01), Alexander
patent: 3007525 (1961-11-01), Orr
patent: 3406757 (1968-10-01), Baumstimler
patent: 3651867 (1972-03-01), Baumstimler
patent: 3785690 (1974-01-01), Hutchinson
patent: 3814180 (1974-06-01), Oliver
patent: 4703804 (1987-11-01), Stokes et al.

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