Sergey Simakov, Gazpromneft NTC

Reserves structure, depth and accessibility are becoming more complex each year so that standard operations no longer address challenges we face today. Drilling of more complex wells require development and application of non- standard equipment. This includes multistage fracturing completion systems and CT as the main tool that meets modern requirements. Now there is a clear tendency for the increase in CT length and diameter, strength group. CT wall thickness has also been changed. Service companies start to apply tapered CT strings optimized for certain well conditions.

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