Columbia Gas System Service Corporation

Norman D Malcosky

Gregory Koziar

Greg Koziar

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.

Apparatus for injecting gas into a pipeline

Gas tracer composition and method

The invention provides a side scanning sonar apparatus for detecting gas bubbles in water. This apparatus transmits low frequency sonar signals horizontally through the water and detects the resultant echoes. The echoes due to bubble columns can be discriminated from those due to simple reflection from solid objects. The invention also provides a special handling apparatus to permit launching and recovery of a towed sonar apparatus in which the upper part of the fairing is relatively fragile.

Apparatus and method for detecting gas bubbles in water, and apparatus

The invention provides a side scanning sonar apparatus for detecting gas bubbles in water. This apparatus transmits low frequency sonar signals horizontally through the water and detects the resultant echoes. The echoes due to bubble columns can be discriminated from those due to simple reflection from solid objects. The invention also provides a special handling apparatus to permit launching and recovery of a towed sonar apparatus in which the upper part of the fairing is relative fragile.

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 noramlly 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.

Growing community of inventors

Columbus, OH, United States of America

Norman D Malcosky