The gas separator uses an abrasion-resistant helicoidal screw to separate gas from reservoir fluid and discharge it into the production tubing annulus. Unlike other gas separators that erode and wear out when exposed to solids and fines, the helicoidal screw has a variable pitch that dramatically reduces blade and body erosion, making it highly resistant to abrasives. 


Enable ESP operation in wells with up to 85% gas

Separating gas from the fluid enables stable ESP operation in high-gas wells
Strongly resist abrasive wear to increase runlife

Variable pitch in the helicoidal screw prevents waterjet wear and damage to the separator body
Remove gas before it can enter the ESP

The helicoidal screw separates gas from fluid using centrifugal force and vents the gas to the annulus


  • Conventional and unconventional wells
  • Reservoirs with up to 85% free gas
  • ESP production in hydraulically fractured and high-sand wells 


  • Available in 272 (69 mm), 319 (81 mm), 362 (92 mm), 406 (103 mm), and 535 (136 mm) series
  • Flowrates up to 5,300 bbl/d @60Hz (700 m3/d @50Hz)


  • Centrifugal gas separation removes undissolved gas from formation fluid and discharges it to the annulus, making production more efficient
  • Variable blade pitch in the helicoidal screw reduces the waterjet wear that cuts through competing gas separators
  • Corrosion-resistant chromium-nickel steel improves runlife in harsh wells
Exterior photo showing a gas separator


3D render showing interior of gas separator

Outer Diameter



Nominal flow rate

Max inlet GOR

2.72 in.

2.42 ft

44 lb

750 bbl/d (@60Hz)


69 mm

0,74 m

20 kg

100 m3/d (@50Hz)

3.19 in.

2.58 ft

55 lb

1050 bbl/d (@60Hz)

81 mm

0,79 m

25 kg

140 m3/d (@50Hz)

3.38 in.

2.68 ft

48 lb

1900 bbl/d (@60Hz)

86 mm

0,82 m

22 kg

250 m3/d (@50Hz)

3.62 in.

2.9 ft

62 lb

1500 bbl/d (@60Hz)

92 mm

0,87 m

28 kg

200 m3/d (@50Hz)

4.06 in.

2.49 ft

66 lb

2600 bbl/d (@60Hz)

103 mm

0,76 m

30 kg

350 m3/d (@50Hz)

4.06 in.

2.90 ft

73 lb

3800 bbl/d (@60Hz)

103 mm

0,89 m

33 kg

500 m3/d (@50Hz)

5.35 in.

3.63 ft

99 lb

7600 bbl/d (@60Hz)

136 mm

1,11 m

45 kg

1000 m3/d (@50Hz)

More about gas separators

Gas separators are designed to reduce the volume of free gas entering an ESP. They use centrifugal force to separate gas from fluid and then discharge the gas into the annulus.

The main weakness of other gas separator designs

The presence of sand, solids, and fines in the reservoir fluid cause waterjet wear in gas separator designs used by most production companies. This waterjet effect erodes and eventually cuts through the thermowell and the gas separator body, rendering the separator useless.

The Novomet difference—Stop waterjet wear

Novomet engineers developed the advanced gas separator with an erosion-resistant helicoidal screw that stops waterjet wear. The helicoidal screw uses a blade that features a constantly decreasing pitch angle from entrance to exit. This decreasing pitch allows sand and solids to slide through the separator without eroding the thermowell or separator body. The result is a gas separator that is highly resistant to waterjet wear and that stops cutting in the thermowell and gas separator body.

The gas separator is designed for use in high-sand, high-solids wells with up to 85% free gas. We also offer gas handling for wells with up to 50% gas and a multiphase pumping solution for wells with up to 75% gas.

Need more info?

Contact us for more information about using our ESP gas separator to combat up to 85% free gas in wells