Patent attributes
A series of independently operated chokes, using a shift tool in registry with a profile discrete to each choke, have a tubular valve member that aligns or misaligns openings for the fully open or closed positions for the choke and for intermediate positions as the valve opens or closes. The valve member is actuated axially using a reversing screw and a j-slot. A shifting tool latches a unique profile to operate the j-slot to cause a sleeve to rotate in place. The sleeve has a pin in registry with a profile on a profile shaft. The profile shaft can move axially in opposite direction but is restrained against rotation. The profile is shaped so that continuous j-slot operation causes the registered pin to move in the profile to then axially drive the profile shaft which is connected to the valve member.
