‘Smart darts’ hit reliability target

Aberdeen-based Churchill Drilling Tools had on display at ONS an innovative dart activation system now being deployed for technically challenging high-angle sections in Norwegian continental shelf wells. According to Churchill, DAV MX mechanical extrusion dart activated bypass valve deployment achieved its 100% reliability target last year.

‘The MX system allows the use of rigid Smart Darts for multi-cycle control and exploits their robustness an resilience to high pressure/high temperature (HPHT) environments to deliver greater speed, reliability and performance than with conventional ball activation through polymer extrusion,’ said the downhole tool developer. The darts are deployed with hardened landing shoulders and dual sheer points.

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