WAB Control Line Feed Through (Welltec Annular Barrier) hero
WAB Control Line Feed Through (Welltec Annular Barrier) hero

WAB® with Control Line Feed Through

Through WAB communication with downhole devices


Through continued evolution of product design, we can now offer the WAB (Welltec® Annular Barrier) with the added feature of multiple Control Line Feed Through. This value adding feature now allows for the placement of hydraulically and electrically controlled downhole devices below or between WAB’s set within open hole or cased hole.

Incorporation of the WAB with Control Line Feed Through, coupled with hydraulically controlled ICV & TEC DHPG, will significantly reduce CAPEX, time and complexity within a multi zone intelligent lower completions by removing the need for cementing & perforated a liner by providing the open hole isolation with the WAB with Control Line Feed Through. 


Case highlight

A client needed to isolate a wet shale / sand zone, shallow of the reservoir with a NACE compliant Barrier & ¼” DTS feed thru. It was imperative that a barrier...

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Product name: Welltec Annular Barrier (WAB) with Control Line Feed Through
Product structure: single piece, machined sleeve – fully welded to base pipe

Seal length: up to 2 m
Base casing: compatibility with all standard casing material / weight / threads
Standard material: alloy 28 / Super Duplex SST
Standard elastomers & seals: HNBR / Aflas / FFKM
Non-elastomer Seals: PTFE
No. of control lines: up to 6 x ¼” control lines

WAB Control Line Feed Through (Welltec Annular Barrier) hori


  • Hydraulic communication with ICV’s for multi zone open hole smart wells
  • Hydraulic communication with ball valve for dual zone smart well
  • Hydraulic communication with chemical injection valves
  • Suitable for all formation types and borehole geometries
  • Electrical communication with multiple zonal pressure gauge for open hole smart wells
  • Electrical communication with downhole pressure gauges
  • Fiber optic feed through for distributing temperature sensing across the reservoir


  • Up to 6 x ¼” control lines
  • Hydraulic, TEC & fiber control line compatible
  • Rugged, all welded, metallic construction
  • Optional isolation of expansion port
  • Expansion assurance in multi-WAB applications
  • High expansion capability
  • Constant, high pressure ∆P over full expansion range
  • No premature expansion
  • NACE Compliant


  • Removes need for cement & perforated liner in multi zone smart well applications
  • Optimizes production bore in multi zone smart well applications
  • Deployable through milled window
  • Slim OD allows for high rate circulation during deployment
  • Rapid set nature of WAB reduces time to production
  • High rate circulation capability
  • Full bore – as per casing / tubing


Expansion range 8.50” 14.00”
Min. running OD 8.180” 11.380”
Max. working pressure 6,000 psi 10,000 psi
Constant element ΔP across expansion range 6,000 psi 10,000 psi
Base pipe range 5 - 1/2” 9 - 7/8”
Standard element length 6.56 ft
Temperature 500°F
Number of control lines Up to 6 x 1/4"
ISO14310 Standard V3
ID Full bore (as per base pipe)