Packoff leak detector

Details Packoff leak detector Packoff leak detector

G - Physics

01

L

340/145

G01L 13/06 (2006.01) E21B 33/035 (2006.01) E21B 47/06 (2006.01) G01M 3/28 (2006.01)

Patent

CA 1123075

ABSTRACT OF THE DISCLOSURE Packoff leaks in an unaccessible wellhead are monitored by a first pressure-sensitive detector posi- tioned below the packoff seal. The space above the pack- off seal is isolated from the inner bore of the casing, and fluid under pressure is applied above the seal to create a pressure differential across it. Any leakage through the seal is detected by a wise in pressure at the first detector. A second detector, coupled to the space above the seal, monitors the pressure above the seal. -la-

298948

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