Abstract: A rotatable agitator tool is disclosed for use with a pump mechanism, for agitating production fluid comprising sand or other debris and for breaking out solution gas, comprising an elongate shaft connected to a rotating element such as a rotor, and a plurality of agitation members extending outwardly from the elongate shaft, the agitator tool extending in an upstream direction from the pump mechanism. The agitation members are preferably flexible to allow the agitator tool to be pushed and pulled through a stator (where employed with a progressive cavity pump) without damaging the elastomeric coating on the stator.