Riserless Well Intervention System

Primary well control safety system allowing efficient subsea well access from an intervention vessel

The Riserless Well Intervention System (RWIS) provides a safe and efficient method of gaining subsea well access. Deployed from a mono-hull vessel, this wire through water system can be rapidly mobilised and deployed for all subsea well access requirements. This RWI system has the capability to interface with any Xmas Tree type for performing activities in the following market segments:

  • Development – Tree deployment and de-suspension operations 
  • Intervention – Production enhancements and well integrity
  • Abandonment – Plug & Abandonment operations


This lightweight system utilises the Expro field proven and qualified ball valve technology, ensuring safe and reliable subsea well access.

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