METHOD AND APPARATUS FOR ESTABLISHING DIFFERENCE BETWEEN NATURAL GAS AND SWAMP GAS Russian patent published in 2019 - IPC G01N33/00 G01N1/22 G01M3/04 

FIELD: physics.

SUBSTANCE: group of inventions relates to determining whether a source of recorded gas signals is swamp gas or communal gas when searching for communal gas leaks in underground pipelines. Disclosed is a method for determining whether a gas sample is from biological processes or from a test gas plant containing communal gas containing methane and/or heavier hydrocarbons, involving: determination of methane concentration in gas sample, performed by gas detector for detection of leaks from pipelines in field conditions, determination of hydrogen concentration in gas sample, performed by hydrogen-selective gas sensor, comparison of hydrogen concentration determined in gas sample with concentration of hydrogen present in communal gas. At that, if by the result of the said comparison, the hydrogen concentration determined in the gas sample is higher than the hydrogen concentration in the communal gas, it is concluded that the sample is from the biological decomposition processes, and not from tested gas installation. Also described is a device for determining whether a gas sample takes place from biodegradation processes or from a tested gas plant containing communal gas containing methane and/or heavier hydrocarbons.

EFFECT: simplification, acceleration and higher reliability of determination.

11 cl, 1 dwg