Patent ID: 8826987

Claim:
A downhole oilfield tool assembly, comprising: a mandrel comprising a collet mandrel, wherein the collet mandrel is rotatably disposed in the downhole oilfield tool assembly, and wherein the collet mandrel comprises collet mandrel teeth; an actuator collar comprising actuator collar teeth, wherein the actuator collar teeth engage with the collet mandrel teeth so as to torsionally lock the collet mandrel to the actuator collar; a ball valve oriented to block downwards flow through the mandrel in a closed position, wherein the ball valve is selectively coupled to rotary motion of the collet mandrel to actuate open in response to rotary motion of the collet mandrel in a first direction and to actuate closed in response to rotary motion of the collet mandrel in a second direction, the second direction opposite of the first direction; a slider pin comprising a first projection configured to engage with a first surface bore in a ball of the ball valve; an actuator pin rigidly connected to the actuator collar, wherein the actuator pin comprises a second projection configured to engage with a second surface bore in the ball of the ball valve; a slider sleeve comprising a longitudinal groove, wherein the slider pin is configured to slide in the longitudinal groove; and a first piston located above the valve and positioned at least partly around an outside of the mandrel, wherein the first piston is configured to develop motive force from a pressure differential between an interior of the mandrel and an exterior of the downhole oilfield tool assembly.