SYSTEMS AND METHODS FOR MULTI-STAGE WELL STIMULATION

A system is provided, run on a liner, for stimulating one or more stages of a downhole wellbore. The system includes one or more frac valves arranged on the liner; each of the frac valves presenting an identical inside profile, the frac valves being openable for providing fluid communication between in inside of the liner to outside of the wellbore; and at least one dart deployable into the liner, and being adjustable to pass through one or more frac valves without opening said one or more frac valves, and to engage and open one or more other frac valves. Each of the at least one darts is identical to another. A method is further provided for stimulating one or more stages of a downhole wellbore. The method includes the steps of running a liner down the wellbore, the liner comprising one or more frac valves, each of the frac valves being openable to prove fluid communication between an inside of the liner to outside of the wellbore; pumping at least one dart down into the liner, passing said at least one dart through one or more frac valves without opening them; and engaging the at least one dart within and opening one or more other frac valves. Each of the at least one darts is identical to one another.