Method and system for converting associated gas

A gas conversion system configured to form a second product gas from an associated gas stream, the gas conversion system comprising:

• a steam generator configured to receive system water and to output steam;
• a Joule-Thomson (J-T) apparatus configured (i) to receive at least a portion of an associated gas stream containing methane and non-methane hydrocarbons and (ii) to separate the at least a portion of the associated gas stream into:
• (a) a J-T liquid in gaseous form containing primarily non-methane hydrocarbons, and
• (b) a J-T gas containing primarily methane and lesser amounts of non-methane hydrocarbons;
• a mixing valve system configured to flow control at least a portion of the J-T liquid and the steam, and to output a feed gas which is a mixture of the steam and the at least a portion of the J-T liquid;
• a super heater configured to receive the feed gas and to superheat the feed gas to a predetermined temperature range to form a superheated feed gas;
• a heavy hydrocarbon reactor containing a first catalyst having a leading edge and configured to receive the superheated feed gas onto the leading edge and to crack a portion of the non-methane hydrocarbons of the superheated feed gas into carbon oxides and hydrogen to form a heavy hydrocarbon reactor reformate comprising methane in the J-T liquid from the associated gas stream, the carbon oxides, and the hydrogen;
• and
• a synthetic natural gas generator containing a second catalyst configured to receive the heavy hydrocarbon reactor reformate to convert a portion of the carbon oxides and the hydrogen into converted methane to form a synthetic natural wet processed gas containing the methane in the J-T liquid from the associated gas stream and the converted methane, wherein the synthetic natural wet processed gas has an overall higher methane mole fraction than the J-T liquid;
• wherein the gas conversion system is configured to blend (i) at least a portion of the synthetic natural wet processed gas as a product gas with (ii) the J-T gas to form the second product gas.