What Is Artificial Lift?
Artificial lift refers to the various methods used to increase fluid flow from oil and gas wells when the reservoir pressure is no longer sufficient to lift fluids to the surface on its own. The majority of producing oil wells in the world require some form of artificial lift — natural flow (free production without pumping) is typically only possible early in a well's life when reservoir pressure is highest.
Types of Artificial Lift
- Rod pump (beam pump): The most common form in the US — a surface pump jack drives a sucker rod string connected to a downhole positive displacement pump. Best for low-to-moderate rate wells.
- Electrical submersible pump (ESP): High-volume centrifugal pump run on production tubing with an electric motor. Best for high-rate wells (500–30,000+ BFPD).
- Gas lift: Natural gas is injected down the annulus and into the tubing at downhole valves to aerate the fluid column and reduce hydrostatic pressure. Flexible, widely used offshore.
- Plunger lift: A free-traveling plunger cycles up and down in the tubing to lift liquid slugs. Used in gas wells with liquid loading.
- Hydraulic pump: Downhole pump driven by pressurized power fluid pumped from surface. Flexible for remote locations.
Selecting the Right Artificial Lift Method
Artificial lift selection depends on production rate, fluid type, well depth, gas-oil ratio, sand production, power availability, and economics. ESP systems excel in high-volume, clean-fluid wells. Rod pumps dominate in mature fields with lower flow rates. Gas lift is preferred offshore where high-volume production often coincides with available lift gas. The wrong artificial lift choice can result in high operating costs, frequent failures, and suboptimal production.
How AI Optimizes Artificial Lift
AI monitors artificial lift performance continuously, detecting early signs of failure, optimizing operating parameters (pump speed, stroke rate, lift gas injection rate) in real time, and predicting when maintenance will be required. Collide's platform integrates with SCADA data from artificial lift systems across an operator's portfolio to provide fleet-wide visibility and anomaly detection.