Taperal Progressing Cavity Pump
Engineered for High Gas Volume Fraction Wells.
Product Overview
The TaperAL Progressing Cavity Pump (PCP) is specifically designed to target short runtimes in applications where high-free gas or foamy oil is being produced through the pump reducing the liquid volumetric efficiency. This unique fit-for-purpose design results in even pressure distribution across the pump with the main goal of extending pump run time.
Challenge
A significant challenge when moving oil from the pressurized downhole reservoir to surface is managing the gas dissolved within the oil. This is heavily influenced by the pressure, volume and temperature relationship. In the reservoir, high pressure keeps the gas in solution but as the oil ascends through the wellbore the pressure decreases causing the gas to expand and separate from the liquid phase. Think of it like a bottle of soda being opened. The expansion of the gas increases the volume of the mixture, otherwise known as emulsion, and can overwhelm the pumping system which prefers liquid flow.
Progressing Cavity Pumps That Outperform
The fit between the rotor and the stator is an important driver of pump efficiency. If the pump fit is tight, pressure will be concentrated towards the top of the pump and can cause premature damage in this area. If the pump fit is loose, there will be improved pressure distribution across the pump, however, this can also result in poor overall performance and run time. With high Gas Volume Fraction (GVF) these problems are magnified.
The TaperAL PC Pump has several advantages over conventional PCP geometry by allowing a non-uniform, tapered compression set that decreases from intake to discharge. This novel design allows for a looser fit in the top portion of the pump backed up by tighter stages towards the intake of the pump resulting in even pressure distribution. This promotes uniform pressure distribution across the pump while maintaining higher compression fit at the bottom to maintain adequate seal and improve overall pump longevity as a result.
Product Features and Benefits
- Engineered to handle the complexities of heavy, foamy oil production in directional wellbores where landing the pump intake below perforations is not possible.
- Compatible with existing/conventional rotors, allowing interchangeability between the TaperAL PCP and conventional PCP.
- Enables more precise pump sizing while ensuring improved pressure distribution across the pump, and delivering the required liquid flow rate without the need to increase speed.
- Enables effective utilization of the bottom sections early in operation, preventing excessive pressure loading on the top section of the stator.
- Extends pump lifespan, reducing operational costs, minimizing downtime, and lowering the frequency of workovers and maintenance.
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