ZONAL ISOLATION TDK-CS-RSR-0318 ©2018 Tendeka. All rights reserved. www.tendeka.com Well Data North Caspian sea, Russia Location: Oil producing horizontal well Well Type: Pressure Rating: 3000psi Temperature: 80°C Russia During production of horizontal wells, LUKOIL was met with gas breakthrough in the heel zone of the wells. Application of a retrievable completion string was planned to isolate such zones and allow a design change of the recompletion string if deemed necessary in the future. The challenge was to isolate gas breakthrough zone(s) of the horizontal wells by using a retrievable completion string. Tendeka Solution In order to allow the retrieval of the recompletion string, Tendeka recommended installing a retrievable design of swellable packers. According to formation

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