wherein feedstock is drawn from a feedstock source the feedstock undergoes initial analysis to determine hydrocarbons levels the feedstock then undergoes reaction to produce tracers such as ethylene propylene acetylene hydrogen and carbon monoxide the feedstock is then analyzed to determine post reaction tracer concentration the feedstock including generated tracers is then introduced back into the feedstock stream tracer levels in the pre reaction or initial analysis of feedstock are compared with tracer levels in the post reaction feedstock and the rate of flow of feedstock through the system is adjusted to achieve a predetermined level of tracer concentration the level of tracer concentration will then be used to identify the particular natural gas charge in a storage field application_number US 23518002 A description this invention utilizes several processes to generate ethylene tracer and other secondary tracers the processes are the oxidative coupling of methane ocm in natural gas process and pyrolysis of ethane a constituent of natural gas for pyrolysis both atmospheric pressure and high pressure conditions were studied these two technologies allow a cost effective on site and online process for underground gas storage use on a regular basis furthermore the process may also employ oxidative pyrolysis chloropyrolysis steam and or carbon dioxide reforming and partial oxidation of natural gas and natural gas conversion using electric arc or plasma to generate such tracers as acetylene carbon monoxide hydrogen and isotopically labeled hydrocarbons an experimental reaction system was designed for the ocm and.