Sustained casing pressure is a serious problem that isprevalent in most of the oil producing regions of the world.Annular pressure can be a significant safety hazard and, on anumber of occasions, has resulted in blowouts. Sustainedcasing pressure results from the migration of fluids in theannulus. The most common path for migration of fluids isthrough channels in the annular cement. To safely andeconomically eliminate sustained casing pressure on a well inthe Gulf of Mexico, W& T Offshore, Inc. utilized an injectablepressure-activated sealant technology to seal channels in theannular cement of their well and eliminate the casing pressure.The mechanical integrity of the well was restored, saving over$1,000,000 compared to a conventional rig workover.
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