ZONAL ISOLATION TDK-CS-SS2-0318 ©2018 Tendeka. All rights reserved. www.tendeka.com Well Data North Sea, Carrack Platform Location: Gas Well Well Type: June 2016 Installation Date: Safety Valve: 5.963” SCSSSV North Sea, UK Tendeka was asked to provide a more robust sealing solution for Surface Control Sub-Surface Safety Valve (SCSSSV). The valve was utilising a chevron stack with O-ring, however this had failed. It was essential to find a solution to avoid the need for an expensive workover, which would have involved pulling the completion to replace the entire system . The Challenge Client had a damaged SCSSSV, existing isolation system was damaged and could not stop the leak through the valve. A more robust sealing solution was required to ensure long-term production of the we

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