Corroded Casing Repair

Corroded casing repair

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Addressing downhole metal oxidation issues

Challenge

Corroded Casing Repair

Oilfield well tubulars must cope with corrosive liquids and salted water. Metal oxidation can appear as from 6 months, due to the casing exposure to corrosive fluids. If not treated, a corroded casing or tubing might be a real danger for the environment. The casing corrosion causes leaks and migrations into the formation, that present serious risks of groundwater contamination. It also means drastic drops in production. An underestimated case of corroded casing may certainly lead to workover operations or to a well plug and abandonment decision. 

Solution

Casing repair techniques with Saltel Xpandable steel Patch. Saltel’s expandable steel casing patch allows restoring casing integrity, optimizes the well’s production, and prevents fluid or gas migrations in the annulus. The Patch, once set, leaves large ID access to the well for most standard downhole tools. Saltel Patch is a pressure-resistant inner lining that allows the end-user to avoid plug and abandonment decisions.