Patent ID: 8529214
Filing Date: 2013-09-10
Classification: F04B

Abstract:
1. A pump system comprising: a pump configured to pump fluid from a well or down hole; a sensor configured to sense a fluid production of said pump and provide an output indicative of said fluid production; and a control system operatively coupled to said pump for automatically varying the speed of said pump based upon said output of said sensor system, wherein said control system is configured to increase the speed of said pump to a speed that is at or close to an absolute maximum speed of the pump, as a direct result of a predetermined period of time elapsing, or at a predetermined time, regardless of the production levels of the pump, wherein the control system is configured to receive information relating to the production of fluid while operating at said speed that is at or close to said absolute maximum speed of the bump, and to subsequently decrease the speed of said pump after said increase if said output of said sensor indicates that the pump is not producing fluid at a sufficient rate, and to continue to decrease the speed of said pump until said output of said sensor indicates that the pump is producing fluid flow at said sufficient rate, such that the speed of said pump is increased and subsequently decreased as appropriate to maximize fluid production thereof, and wherein said control system is configured, during said increase in speed when said predetermined period of time has elapsed, or at said predetermined time, to increase the speed of said pump to a speed that is at least about 30% over its current speed.