Wellhead maintenance: safeguarding against the unknown
Corrosion & Erosion – Wellhead and tree components are continually subjected to corrosion and erosion – whether it is via the external environment with onshore wellheads being sand blasted by wind and offshore surface wellheads sitting in a corrosive salt-water atmosphere, or via the internal environment with hydrocarbons eroding the internal casing/tubing strings over a period of time. The gradual thinning of the metalwork caused by these corrosive environments will eventually lead to cracks or holes, through which hydrocarbons or gas will leak, causing contamination and further speeding up the deterioration of the wellhead materials.
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