New equipment ///
This annular pressure release system is a thin metallic disc built into the outer wall of the casing coupling. The newly patented system serves as a safety valve for relieving pressure caused by hot production fluids trapped within the casing annulus. The disc is calibrated to burst at a predetermined pressure and temperature threshold selected by the end user. The threshold can be set high enough to allow thorough well testing, but low enough to avoid collapsing the casing string or damage to the well.
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