Gas Swellable Seals for Gas Migration Prevention

SEAL UNITS prevent gas/fluid movement at the interface between the outer surface of the casingand the inside of the cement sheath. In spite of the improved practice of releasing pressure on the casingafter the top plug bumps, investigations by different research and development groups confirm thatleakage at this interface is very possible. When subjected to differential pressures, often encountered incompleting or producing a well, inter-zonal communication at this point will occur, like “channeling”in the remainder of the annulus. This will prevent efficient production of the producing zone or causestimulation work (fracturing, acidizing, etc.) to be ineffective due to uncontrolled fluid migration in theannulus.

کلیدواژه ها:

Rubber ، Elastomer ، Swellable Gas Seal ، Swellable Packer ، Gas Migration ، Well Integrity ، Well Fluids Pathways ، Micro-Annulus