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Drilling Industry Glossary

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Sustained Casing Pressure (SCP)

SCP is excessive casing pressures in wells that persistently rebuilds after bleed-down. SCP is caused by gas migration from a high-pressured subsurface formation through the leaking cement sheath in one of the well’s casing annuli. It may also be caused by defect and leaking tubing connections, downhole accessories or wellhead seals

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