Apparatus for completing a well

Details Apparatus for completing a well Apparatus for completing a well

1977-09-22

1979-05-01

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Operated by dropped element

166315, E21B 3312

Patent

active

041518810

ABSTRACT:
Apparatus for completing a wellbore which has a hydrocarbon containing formation located downhole therein and wherein the well is perforated and filled with mud. A special plug, made in accordance with the invention, is placed in the end of a tubing string, and the string run dry into the borehole with the lower end of the string terminating in proximity of the perforations. The annulus is packed off and a weight dropped down through the string. The weight impacts against a special valve contained within the plug, thereby upsetting a valve element. This action communicates the interior of the string with the borehole, whereupon the lower borehole or bottomhole pressure is equalized across the plug, and the plug and weight fall from the end of the string and to the bottom of the borehole. The string is opened to ambient which allows flow to occur in order to clean out the well, and thereafter the string is connected to a gathering system.

REFERENCES:
patent: 2545504 (1951-03-01), Villafane
patent: 2565731 (1951-08-01), Johnston
patent: 2638167 (1953-05-01), Jones
patent: 2676661 (1954-04-01), Crooke, Jr.
patent: 2903074 (1959-09-01), Layton et al.
patent: 2922479 (1960-01-01), Kinley
patent: 3003565 (1961-10-01), Courtney
patent: 3029875 (1962-04-01), Moller
patent: 3095040 (1963-06-01), Bramlett
patent: 3931855 (1976-01-01), Vann et al.

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