Well Access Solutions

Simplified and effective drilling operations with innovative, new solution for XT installation. 4Subsea Astori delivers well access systems that can be used for all types of XT operations. The system reduces operational time and cost through reduced overall tooling need, simplified ROV scope and reduced topside logistics.

Subsea control systems Astori 4Subsea


Typical Challenges for Operators


Do any of these apply to your drilling operations?
  • One rig operating multiple fields and a dynamic rig schedule
  • Multiple subsea vendors and XT systems
  • System limitations with conventional systems
  • High cost with use of ROV and other tooling


Subsea control systems are a critical part of all operations linked to subsea wells. 4Subsea, with the prominent developers and technical experts from Astori on board, now delivers an innovative well access system for well intervention. The module may also be used as a subsea HPU for production.


Illustrations above: Courtesy of Wintershall.


The control system operates all types of XT systems from all main vendors and is therefore one common system for XT operations. It can be used for multiple fields and fluid types. In short, the system ensures reduced cost and time of well intervention.

EDHM subsea control system 4Subsea all rights reserved

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Key Benefits

  • One common system for all XT operations
  • Operates XT systems from all main vendors
  • Reduces cost and time of drilling operations
  • Can be used for multiple fields and hydraulic fluid types
Key Features

  • Reduces umbilical size and handling
  • Provides HSE improvements through simplified handling and reduced lifting
  • Simplifies the ROV scope
  • Reduces weight and footprint of well intervention system on rig

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