Progressive cavity pumps are typically used in heavy oil, dewatering and high GOR applications at depths less than 7,000 ft. PCPs are typically used in applications where the economics of production demand efficiency, reliability and low life cycle costs from artificial lift equipment.
A PCP consists of two main components: a rotor and a stator. When the rotor is placed inside of the stator, a series of cavities are formed. The rotor turns inside the stator and as this happens, the cavities progress from the pump inlet to the discharge driving the fluid up the tubing string to the surface. Benefits to using a PCP include their low cost, the ability to deal with solids / fines, high efficiencies, and low downtime.
The key challenges with producing fluid using a progressive cavity pump include:
• Solids: although PCPs are often used in wells with high solids contents, both high solid cuts (%) and large particles remain a common cause of failures
• High gas volumes: free gas flowing through the pump
• Burnt out stator: a lack of fluid entry into the pump causes a lack of lubrication within the stator which eventually “burns” the elastomer at the seal lines
• Loss of pump efficiency: due to the properties of the customers used in the stator, progressive cavity pumps lose efficiency over time
Cost considerations with existing PCP automation solutions and well economics of PCP wells created a smaller set of optimization technology to support it. Ambyint’s end-to-end platform was built with the economics of low-value wells in mind. Ambyint’s ability to monitor torque and intelligently control speed allows well operators to cut down on the ever-increasing number of man-hours spent physically tending to stripper wells, by putting every low yielding well in the palm of your hand.