Wireline well abandonment tool

Abstract

A well abandonment tool comprising an elongate housing extending between top and bottom ends locatable within a wellbore having a longitudinal pumping cylindrical bore therein. The apparatus further comprises a wellbore seal located around the housing operable to engage upon the wellbore and to be expanded into contact therewith upon an upward motion of the housing so as to seal an annulus between the housing and the wellbore and a bridge plug engagement connector adapted to secure a bridge plug thereto at a position below the bottom end of the housing. The apparatus further includes a pumping piston longitudinally moveably located within the pumping cylinder, the pumping piston being suspended from a wireline wherein longitudinal movement of the pumping piston discharges a fluid into a bridge plug activation chamber having a movable cylinder adapted to draw the bridge plug engagement connector against the bottom end of the housing so as to expand the bridge plug into engagement with the wellbore. A method for abandoning a wellbore comprising locating a housing within a wellbore above a location to be sealed, pulling upwardly on a wireline secured to a pumping piston within the housing so as to draw a bottom end of the housing upwards thereby extending a seal element located along the housing into engagement with the wellbore, pulling upwardly on the wireline so as to displace the pumping piston within a cylindrical bore within the housing so as to discharge a fluid therefrom and directing the discharged fluid into a bridge plug activation chamber adapted to draw a bridge plug engagement connector against a bottom end of the housing so as to expand a bridge plug secured thereon into engagement with the wellbore.

Dependencies are inferred from the claim text.