Well WAB 00000 JPG

WAB® for Zonal Isolation

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

Introduction

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.

  • Challenge
    Zonal isolation
  • Applications
    Effective zonal isolation
WAB 360 00000
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Case Highlight

CHALLENGE
Well completion

A Canada based client, was having challenges in an offshore field on the East coast of Canada, with successfully isolating high water concentration zones using swell packers in their infill wells ...

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Case Highlight 2

CHALLENGE
Zonal isolation

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

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Overview

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.
Well WAB Vert 00000 (1)
Well WAB Hori 00000 (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
  • No premature expansion
  • NACE compliant
  • Suitable for sour service

Specifications

Expansion range 5.75" 10.00”
Min. running OD 5.56” 8.180”
Max. working pressure 5,000 psi 12,000 psi
Constant element ΔP across expansion range 5,000 psi 12,000 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)