Running screens on the Troll field has traditionally required limited tripping speeds to avoid surge pressure exceeding the fracture gradient of the depleted sand reservoir. Over the years, the sand reservoir has become depleted from many years of production and contains fault zones, resulting in lost circulation challenges.
Rig time saved during tripping
operations
The EC-Drill® solution enabled the reduction of fluid level to compensate for the surge pressure while running pipe.
Depleted reservoir with fractured zones required efficient technology
The technology used on the Troll field has enabled the rig of being among the most efficient on the Norwegian Continental Shelf.
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