Method and apparatus for detecting the presence or absence...

Details Method and apparatus for detecting the presence or absence... Method and apparatus for detecting the presence or absence...

2005-06-16

2010-11-16

Williams, Hezron (Department: 2856)

Measuring and testing

With fluid pressure

Leakage

Reexamination Certificate

active

07832256

ABSTRACT:
A method and apparatus for detecting the presence or absence of an undesirable fluid, such as water, in a pipeline and for removing the undesirable fluid are disclosed. A detecting substance, for example, sugar, naphthalene or a pigmented solid is carried by a sweeping pig. The sweeping pig is inserted into the pipeline, propelled along the pipeline and recovered from the pipeline. The detecting substance is examined upon recovery of the sweeping pig to determine whether the undesirable fluid is present in the pipeline. The pipeline can be swept multiple times until examination of the detecting substance indicates that the undesirable fluid is not present in the pipeline.

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