© 2006 Weatherford. All rights reserved.

Gas Lift Systems

© 2006 Weatherford. All rights reserved.

© 2006 Weatherford. All rights reserved.

Gas Lift System Advantages

• High Degree of Flexibility and

Design Rates

• Wireline Retrievable

• Handles Sandy Conditions Well

• Allows For Full Bore Tubing Drift

• Surface Wellhead Equipment

Requires Minimal Space

• Multi-Well Production From

Single Compressor

• Multiple or Slimhole Completion

• WEM, Val-Cal, Dyna-Lift, WellFlo

Produced Hydrocarbons Out

Injection Gas In

Side Pocket Mandrel with Gas Lift Valve

Completion Fluid

Side Pocket Mandrel with Gas Lift Valve

Production

Packer

Mandrel

© 2006 Weatherford. All rights reserved.

• Needs High-Pressure Gas Well or

Compressor

• One Well Leases May Be

Uneconomical

• Fluid Viscosity

• Bottomhole Pressure

• High Back-Pressure

Gas Lift System Limitations

Produced Hydrocarbons Out

Injection Gas In

Side Pocket Mandrel with Gas Lift Valve

Completion Fluid

Side Pocket Mandrel with Gas Lift Valve

Production

Packer

Mandrel

© 2006 Weatherford. All rights reserved.

Applications

Return dead or loaded wells back to

production

Increase production in flowing wells

Unload well that will later flow naturally

Remove or unload fluids from gas wells

and/or keep gas well unloaded

Good operation in high GOR wells

Need high pressure inj. gas source

Produced

Hydrocarbons

Out

Injection

Gas In

Side Pocket

Mandrel with

Gas Lift Valve

Completion

Fluid

Side Pocket

Mandrel with

Gas Lift Valve

Single Production

Packer

Side Pocket

Mandrel with

Gas Lift Valve

© 2006 Weatherford. All rights reserved.

Completion Options – Gas Lift

© 2006 Weatherford. All rights reserved.

Typical Gas Lift Mandrel

Upper Swedge Lower Swedge

Orienting Sleeve

Mandrel Body

Pocket

• Chemical Injection

• Water Flood

• Steam Injection

• Corrosion Monitoring

• Differential Dump Kill Valves

• Circulating Device

© 2006 Weatherford. All rights reserved.

Wireline Retrievable Gas Lift Valves

KICKOVER TOOL

LATCH

GAS LIFT VALVE

© 2006 Weatherford. All rights reserved.

Conventional Gas Lift

Equipment

*Special

Analysis

Required

Produced

Hydrocarbons

Out

Injection

Gas In

Side Pocket

Mandrel with

Gas Lift Valve

Completion

Fluid

Side Pocket

Mandrel with

Gas Lift Valve

Single

Production

Packer

Side Pocket

Mandrel with

Gas Lift Valve

© 2006 Weatherford. All rights reserved.