Patent ID: 7703510

Claim:
A frac tool having a run-in position, a first operational position, and a second operational position, the frac tool comprising: a housing having an inner wall surface defining a bore, a first port, and a second port disposed above the first port; a sleeve in sliding engagement with the inner wall surface of the housing, the sleeve having a sleeve port and an actuator for moving the sleeve from the run-in position to the first operational position, the actuator comprising a seat disposed in a sleeve bore, the seat being actuatable by a plug element so that the sleeve can be moved from the run-in position to the first operational position by fluid pressure forcing the plug element into the seat; and a return member in sliding engagement with the inner wall surface and operatively associated with the sleeve, the return member having a biased member, the biased member being energized when the frac tool is in the first operational position and the biased member not being energized when the frac tool is in the second operational position, wherein the sleeve port closes the first and second ports in the housing when the frac tool is in the run-in position, the sleeve port is aligned with the first port in the housing and the second port is closed by the sleeve when the frac tool is in the first operational position, and the sleeve port is aligned with the second port in the housing and the first port is closed by the sleeve when the frac tool is in the second operational position.