Packoff leak detector

Details Packoff leak detector Packoff leak detector

1977-04-28

1978-09-26

Swisher, S. Clement

Measuring and testing

With fluid pressure

Leakage

285 93, 340605, G01M 328

Patent

active

041160444

ABSTRACT:
Packoff leaks in an unaccessible wellhead are monitored by a first pressure-sensitive detector positioned below the packoff seal. The space above the packoff 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 rise in pressure at the first detector. A second detector, coupled to the space above the seal, monitors the pressure above the seal.

REFERENCES:
patent: 2478628 (1949-08-01), Hansen
patent: 2951363 (1960-09-01), Diodene
patent: 3872713 (1975-03-01), Ilfrey
patent: 3974690 (1976-08-01), Brock et al.

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