Plunger-assisted gas lift is a cost-effective and proven method for removing liquids from aging or low-pressure gas wells. By efficiently clearing liquids from the wellbore, this method allows wells to flow at lower bottomhole pressures—extending well life and increasing gas recovery.
What sets plunger lift apart is its simplicity: it uses the well’s own energy to remove accumulated liquids and maintain steady gas production. It’s not only economical but also environmentally responsible, helping reduce gas losses and methane emissions associated with liquid loading.
How Gas-Assisted Plunger Lift Works
Plunger lift operates through a controlled cycle of shut-in and flow periods that use gas pressure to drive a plunger up the wellbore, carrying accumulated fluids with it.
Here’s how a typical cycle works:
- Shut-In Phase
The cycle begins with the plunger resting at the bottom-hole bumper. The Hydroplex surface control valve remains closed, allowing gas pressure to build up in the annular space between the tubing and casing. - Pressure Buildup
As gas accumulates, pressure increases in the annulus. Once a predetermined threshold is reached, the well’s controller signals the surface valve to open. - Lift Phase
The sudden drop in tubing pressure causes the high-pressure gas from the annulus to rush into the tubing below the plunger. This pressure surge propels the plunger and the column of fluid above it to the surface. - Production Phase
The liquid is expelled through the upper and lower outlets on the wellhead and into the production line. The plunger is captured in a spring-loaded lubricator at the top of the tubing, allowing unrestricted gas flow. - Reset and Repeat
Once formation pressure drops and flow slows, the valve closes, and the plunger is released to fall back to the bottom. The cycle then begins again.
This efficient, repeatable process keeps gas wells productive—even when natural pressure is low—without the need for expensive equipment or energy input.
Benefits of Installing a Hydroplex Valve
Installing a Hydroplex control valve as part of your plunger lift system ensures reliability, control, and long-term performance in tough field conditions. These valves are engineered to meet the demands of continuous, high-cycle operation while offering minimal maintenance and maximum uptime.
Key Advantages:
- Easy Maintenance
Internal Cartridge Assembly allows for quick, field-serviceable maintenance without dismantling the entire valve. - Freeze Protection
Integrated Chemical Injection Port helps prevent freezing in cold climates, supporting reliable operation in all seasons. - Durability
Stainless steel internals provide the longest mean time between service (MTBS), reducing downtime and service costs. - Precision Control
Direct mount actuation eliminates the need for brackets or adapters, offering streamlined installation and response. - High Accuracy
90-degree rotary twin disc trim delivers precise resolution and accurate flow control in all operating modes. - Exceptional Repeatability
High repeatability rates ensure consistent performance cycle after cycle, even under fluctuating well conditions. - Extended Trim Life
Twin disc design separates control and sealing surfaces, minimizing wear and maximizing operational lifespan. - High-Cycle Reliability
Robust stem and seal integration enables hundreds of thousands of operational cycles without failure. - Wear Resistance
Solid tungsten carbide trim significantly reduces wear on control and sealing surfaces, making it ideal for abrasive or high-pressure applications.
Hydroplex valves are a trusted component in modern plunger lift systems, providing performance, reliability, and control that operators can count on.
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Improve your output from aging gas wells with Hydroplex plunger lift valves. Contact our team today for technical specs, installation support, or to request a quote.