Gas Separators/Gas Handlers
There are three primary methods used to enable production in highly gassy wells. We either avoid, separate or handle the gas. For gas avoidance we can use various types of intake gas avoidance devices. For gas separation we use either rotary gas separators for low flow application or vortex gas separators for higher flow rates and higher gas volumes. Additionally, shrouds can be used which allow for setting the pump below the perforations and increase the flow of fluid past the motor for cooling while creating a simple reverse flow gas separation configuration. For gas handling, we mean producing the gas through the ESP system. This is accomplished through the use of specialty gas handling devices, tapered pumps with multiple size types of pump stages.
Gas handling devices may be a better alternative for wells prone to high free gas, slugging, foams and emulsions. These are essentially centrifugal pumps with large stages, mixed (or axial) impellers, large vane openings, steep vane exit angles and sometimes include multiple vanes. Instead of separating, their purpose is to break large gas bubble into smaller ones thereby reducing the risk of gas locking and making it easier for gas to be re-absorbed into solution, and to homogenize the gas with liquid phases, prior to entering the pump intake. An additional benefit of gas handlers is, because more gas is retained in the flow stream, this gas is then available to help lift fluids in the tubing above the ESP discharge head thereby reducing hydraulic horsepower requirements.
- Series diameters: 300, 400, 500
- Types: rotary gas separator, vortex gas separator, XGVH gas handler, XGVH-HF gas handler
- Configurations: single, double
- Options: abrasion resistant bearings, corrosion resistant metallurgy