Hydraulic releasing tool with plug

Claim 1

An elongated tool for detachably connecting a sand screen and liner assembly to a tubing string, comprising a releasing housing sleeve having an upper and lower end, a hollow hookup nipple which partly telescopes within the lower end of the releasing housing sleeve, a movable hollow piston having a ball valve seat at one end and a cross bore extending through its other end part, said piston fitting within the upper end part of said releasing housing sleeve with the cross bore aligned with an array of longitudinally extending slots which are disposed in and extend through the releasing housing sleeve, said hookup nipple having circumferentially extending grooves near its upper end which each mate with an array of bores extending through the releasing housing sleeve near the lower end of said sleeve, a plurality of detent elements disposed in said array of bores and in said grooves, and a retainer sleeve, said retainer sleeve fitting over said releasing housing sleeve and being coupled to the cross bore of said piston through said array of slots to cover the arrays of bores in the releasing housing sleeve, said retainer sleeve containing near its lower end part above the part which covers said arrays of bores an array of elongated slots which are axially aligned with said arrays of bores in said releasing housing sleeve whereby downward movement of said piston forces said retainer sleeve downward, so said array of elongated slots in said retainer sleeve uncover said arrays of bores, permitting said detent elements to fall out and release said hookup nipple from said releasing housing sleeve.