Case Study: EC-Drill® – Troll field, North Sea

By applying the EC-Drill® Controlled Mud Level system on the Troll field, it assisted a major operator in extending the well lengths, hence, prolonging life of field.


  • CHALLENGE: Limited running speeds due to surge pressure through weak sands with long horizontal Open Hole screens.

  • SOLUTION: Using the EC-Drill® system, it enabled the reduction of fluid level to compensate for the surge pressure while running pipe.

  • RESULTS: Surge pressure reduced, tripping speed increased by 50 per cent and rig time was saved during tripping operations.

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