FlexRite® Isolated Tie-Back Multilateral System

The FlexRite® system provides a hydraulically isolated TAML level 5 high-strength junction with sand control. This aluminum wrapped pre-milled window system incorporates a flexible junction with two semi-circular sections to maximize cross-sectional flow area and load carrying capability. The high strength of the junction allows the installation of long lateral screens for increased reservoir exposure and production capability. The FlexRite system offers through-tubing intervention and lateral re-entry with separate workover capabilities. Operations such as production logs, stimulation, clean out, water and gas isolation, water and gas shut off and can be performed on both the lower mainbore and lateral liners. The system also has the capability for an Intelligent Completion Interface.


  • Aluminum-wrapped pre-milled window allows easy drill-out with no steel debris, reducing costly clean-out trips and minimizing risk in subsea applications
  • Increased reservoir exposure as long lateral screens can be installed through the high-strength junction
  • Maximum flow area at the lateral junction for production optimization
  • Isolated TAML level 5 junction helps eliminate sand production
  • Permanent downhole latch coupling reference for depth and orientation control
  • Allows isolation and flow control of lower mainbore and lateral
  • Junctions can be stacked to allow for multiple junctions from the same wellbore


  • Pre-milled FlexRite window joint with orienting latch coupling
  • Flexible junction is normally landed in the completion deflector and junction, using a MWD sensor to confirm final orientation
  • Deflector with internal sealing component
  • Flexible junction with two D-shaped tubulars to maximize flow area/load carrying capability
  • Uses Y block to allow non-rig intervention with coiled tubing or wireline

FlexRite® Isolated Tie-Back Multilateral System (TAML Level 5)

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Summary Australia: New Multilateral Window Exit Technology from Halliburton Reduces Installation Time and Helps Operator Save an Estimated $3.3 Million Dec 2014
Summary First successful installation of parking sub and fluid loss isolation barrier valve in multilateral well Jul 2014
Summary Australia: FlexRite® Multilateral System Delivers Increased Reservoir Exposure with Reduced Capital and Operational Expenditures Nov 2009
Summary Norway: Two Production Wells in Different Pressured Reservoirs Receive High-Pressure Water Injection from One Multilateral Well Jul 2009
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