WAB® for Zonal Isolation

Extended reach, cementless lower completions via rotatable, metal expandable packers

WAB for Well Completion (Welltec Annular Barrier)

To increase net present value of their assets, extended reach horizontal reservoir sections are becoming critical to operators looking to increase well productivity and maximize their ROI.

Extended reach lower completion design creates significant concerns over the ability to execute a conventional cement or perforated liner well design due to the high inclination nature of the reservoir section. This is due to the required ability, across these heterogeneous formations, to isolate unwanted water or gas inflow by isolating and compartmentalizing the reservoir. To achieve this it is critical to design the well with reliable isolation between lower completion and open hole without the need for cement.

Case Highlights

Featured case

A client operating in Offshore Atlantic Canada was having challenges with successfully isolating high water saturation intervals within the reservoir using swell...

Featured case 2

A client desired zonal isolation within a horizontal well with an open-hole completion. The client chose the Welltec Annular Barrier (WAB)...

Our ISO 14310 rated, metal expandable WAB (Welltec Annular Barrier) 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 reservoir isolation.

Challenges

Datasheet

WAB for Well Completion (Welltec Annular Barrier) (1)
Applications
Zonal isolation within the reservoir
Zonal isolation between adjacent zones
Water / gas isolation
High pressure OH isolation for stimulation
Open hole, cased hole and hostile environments
Features
Rugged, all welded, metallic construction
Rotatable during deployment
Full bore – as per casing / tubing
Burst protection option available
Benefits
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
Rapid set nature of WAB reduces time to production
No premature expansion
NACE compliant
Suitable for sour service
Specifications
Expansion range 5.75” → 10.00”
Min. running OD 5.56” → 8.240”
Max. working pressure 5,000 psi → 15,000 psi
Constant element ΔP across expansion range 5,000 psi → >15,000 psi
Base pipe range 4-1/2” → 7”
Standard element length 7.2 ft
Temperature 500°F
ISO14310 Standard Up to V0
ID Full bore (as per base pipe)
5Bea4b9ada915740077df03b3a66b3b5

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