Apparatus for injecting gas into a pipeline
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United States of America Patent
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Sep 27, 1988
Issued Date -
N/A
app pub date -
Jun 19, 1987
filing date -
Mar 2, 1983
priority date (Note) -
Expired
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Abstract
The invention provides a method for tagging methane by adding thereto one or more of the tracer compounds sulfur hexafluoride and chloropentafluoroethane. The methane being tagged is normally being stored in underground storage fields to provide identity and proof of ownership of the gas. The two tracer compounds are readily detectable at very low concentrations by electron capture gas chromatography apparatus which can be made portable and thus suitable for use in the field.
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