Patent ID: 7753115
Filing Date: 2010-07-13
Classification: E21B,F04C

Abstract:
1. A flow control system for removing liquid from a wellbore comprising: a progressing cavity pump positioned in a wellbore and having a rotor received by a stator, the rotor rotating within the stator to remove liquid from the wellbore, the rotor being capable of axial movement between a disengaged position, a first engaged position, and a second engaged position; a push rod configured to receive the rotor when the rotor is in and between the first and second engaged positions; a sealing element positioned in the wellbore and operatively connected to the push rod such that the sealing element is in an unsealed position when the rotor is in the first engaged position and is in a sealed position when the rotor is in the second engaged position, the unsealed position of the sealing element permitting fluid flow within the wellbore past the sealing element, the sealed position substantially preventing fluid flow within the wellbore past the sealing element.