WAB for Well Completion (Welltec Annular Barrier)
WAB for Well Completion (Welltec Annular Barrier)

WAB® for Well Completion

Application flexible, high performance packer


Through its versatility in application, and robustness in design, the WAB (Welltec Annular Barrier) for well completions can be utilized to provide solutions to many requirements throughout the completion phase of a well. The WAB's IS014310 V0 leak rate capability, when set in cased hole, enables the incorporation of the WAB as a high pressure production packer for both HP gas, and oil well applications.

Furthermore, the ability to rotate and reciprocate during installation and cementing operations, and then expand and seal, on demand, via a onetime application of surface, in horizontal applications, allows the WAB to be incorporated as a Liner Hanger, significantly reducing risk and complexity, in these often-challenging applications. Couple this with the V0 leak rate capability, the WAB liner hanger offers significant benefits over conventional, dual-stage set, liner hangers. 

WAB 360 00000
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Case highlight

Client required a life of well solution to protect the A annulus from Sustained Casing Pressure (SCP) on a mono bore, long string completion. Production from a...

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Case highlight 2

An IOC had an appraisal well application that required a number of solutions, to allow them to construct and complete the well to their high standards. The list...

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Our ISO 14310 rated, metal expandable WAB for open hole zonal isolation, facilitates the ability to deploy ‘cementless’ extended reach, multi zone, horizontal, lower completions.

The WAB provides the on- demand, high pressure zonal isolation across varying borehole geometries unaffected by thermal changes in the wellbore, so often a problem in conventional open hole isolation.

WAB for Well Completion (Welltec Annular Barrier) (1)


  • Zonal isolation within the reservoir or between adjacent zones
  • Water / gas isolation
  • High pressure OH isolation for stimulation
  • Open hole, cased hole and hostile environments


  • Rugged, all welded, metallic construction
  • Rotatable during deployment
  • Full bore – as per casing /t ubing
  • Burst protection option available


  • Slim OD allows for high rate circulation during deployment
  • High expansion capability
  • Constant, high pressure ∆p over full expansion range
  • Rapid set nature of WAB allows expedites time to production
  • No premature expansion
  • NACE compliant
  • Suitable for sour service


Expansion range 9.50” 20.05”
Min. running OD 9.00” 17.00”
Max. internal pressure 4,000 psi 8,000 psi
Constant element ΔP across expansion range 4,000 psi 8,000 psi
Base pipe range 7-5/8” 14”
Standard element length 7.2 ft
Temperature 500°F
ISO14310 Standard Up to V0
ID Full bore (as per base pipe)