Hydraulic setting tool

Claim 1

Apparatus for setting in a bore a well tool of the type having radially expandable anchor means and a mandrel-actuated slidable valve for permitting flow through the tool, said apparatus comprising: inner and outer sleeves telescopically interengaged and adapted to be suspended from a tubing string for lowering into the bore; means for attaching a shearable connector to the lower end of said inner sleeve for suspending such a tool therefrom; a vertically shiftable mandrel received within the inner sleeve for engaging the well tool valve; means for maintaining said mandrel in a predetermined upper position with respect to said inner sleeve; means for telescopically moving said inner sleeve upwardly relative to said outer sleeve, said outer sleeve engaging said anchor means to effect setting of the tool responsive to such movement; and means for maintaining said mandrel in a predetermined lower position with respect to said inner sleeve subsequent to such setting of the tool.

Claim 12

An apparatus for setting a well tool in a bore, said well tool having radially expandable anchor means and a conduit including a valve shiftable between upper and lower positions for selectively permitting fluid flow through said conduit, said apparatus being of the type having a setting sleeve for engagement with said anchor means to effect tool setting, said apparatus comprising: means for suspending the apparatus from a tubing string for lowering into the bore; an inner sleeve contained within said setting sleeve and shiftable between upper and lower positions; a vertically shiftable meandrel contained within said inner sleeve for engagement with said well tool valve; shear means mountable on the lower end of said inner sleeve for suspending said well tool therefrom; piston means disposed between said setting sleeve and said inner sleeve for effecting upward movement of said inner sleeve responsive to pressurization thereof; and means for selectively maintaining said mandrel in a first predetermined position with respect to said inner sleeve, said maintaining means including: a first groove and a second groove thereabove formed on said mandrel; a slot in said inner sleeve; a locking collar disposed about said inner sleeve and having a third groove formed in its radially inner surface; shearable means for shearably attaching said locking collar to said inner sleeve adjacent said slot; and a ball disposed between said mandrel and said inner sleeve, said ball being received in said first groove and said slot and maintained therein by said locking collar prior to shearing of said shearable means, and being received in said second groove and said slot subsequent to said shearing, said third groove being adapted to receive said ball when said third groove is adjacent said inner sleeve slot during at least a portion of the movement of said ball from said first groove into said second groove.

Claim 13

An apparatus for setting a well tool in a bore, said well tool having radially expandable anchor means and a conduit including a valve shiftable between upper and lower positions for selectively permitting fluid flow through said conduit, said apparatus being of the type having a setting sleeve for engagement with said anchor means to effect tool setting, said apparatus comprising: means for suspending the apparatus from a tubing string for lowering into the bore; an inner sleeve contained within said setting sleeve and shiftable between upper and lower positions; a vertically shiftable meandrel contained within said inner sleeve for engagement with said well tool valve; shear means mountable on the lower end of said inner sleeve for suspending said well tool therefrom; piston means disposed between said setting sleeve and said inner sleeve for effecting upward movement of said inner sleeve responsive to pressurization thereof; and means for selectively maintaining said mandrel in a first predetermined position with respect to said inner sleeve, said maintaining means including: a first groove and a second groove thereabove formed on said mandrel; a slot in said inner sleeve; a locking collar disposed about said inner sleeve and having a third groove formed in its radially inner surface; shearable means for shearably attaching said locking collar to said inner sleeve adjacent said slot; and a ball disposed between said mandrel and said inner sleeve, said ball being received in said first groove and said slot and maintained therein by said locking collar prior to shearing of said shearable means, and being received in said second groove and said slot subsequent to said shearing, said third groove being adapted to receive said ball when said third groove is adjacent said inner sleeve slot during at least a portion of the movement of said ball from said first groove into said second groove.