The primary function of downhole seals is to create a reliable barrier between different pressure zones in the wellbore. Whether in completion, intervention, or production phases, they prevent unwanted fluid or gas flow, protect the casing, and enable controlled reservoir management. Failure of a single seal can lead to costly workovers, loss of production, or even blowouts https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/