SWELLABLE ENERGIZERS FOR OIL AND GAS WELLS

摘要

A seal stack including a sealing element including an annular seal ring having a diameter and an axis defined therethrough perpendicular to the diameter, a groove defined in the seal ring, wherein the groove has an opening at a first end of the seal ring, and a swellable energizer disposed in the groove, wherein the swellable energizer swells upon exposure to a solvent causing the seal ring to expand. The seal stack also includes a first annular back-up and a second annular back-up provided at opposing ends of the sealing element, wherein said first back-up includes an interior surface that receives a second end of the sealing element.

主权项

1. A seal stack, comprising:
a sealing element including an annular seal ring having a diameter and an axis defined therethrough perpendicular to said diameter, a groove defined in said seal ring, wherein said groove has an opening at a first end of said seal ring, and a swellable energizer disposed in said groove, wherein said swellable energizer swells upon exposure to a solvent causing said seal ring to expand; and a first annular back-up and a second annular back-up provided at opposing ends of said sealing element, wherein said first back-up includes an interior surface that receives a second end of said sealing element.