Vented methane gas mitigation system with failure detection

A methane gas mitigation system, comprising:

• an engine comprising a fuel intake configured to receive a gas fuel source and produce mechanical power based on the gas fuel source, wherein the engine is configured to operate according to the gas fuel source being within a gas pressure operating range;
• a primary gas compressor mechanically driven by the engine, wherein the primary gas compressor is configured to compress a majority portion of field gas into compressed field gas, and wherein the primary gas compressor is configured to vent a minority portion of the field gas as a vented field gas;
• a vented flow path configured to carry the vented field gas from the primary gas compressor;
• a secondary gas compressor arranged on the vented flow path and configured to compress the vented field gas to satisfy the gas pressure operating range;
• and
• an engine fuel rail coupled to an output of the secondary gas compressor and configured to provide the vented field gas, within the gas pressure operating range, to the fuel intake of the engine, the vented field gas being provided to the fuel intake as a portion of the gas fuel source.

A method of mitigating methane from being released into an atmosphere, the method comprising:

• providing a gas fuel source to a fuel intake of an engine, the gas fuel source being provided within a gas pressure operating range of the engine;
• producing, by the engine, mechanical power based on the gas fuel source;
• using the mechanical power to drive a primary gas compressor, the primary gas compressor being configured to compress a majority portion of field gas into compressed field gas, and vent a minority portion of the field gas as a vented field gas to a vented flow path;
• using the mechanical power to drive a secondary gas compressor, the secondary gas compressor arranged on the vented flow path and configured to compress the vented field gas to satisfy the gas pressure operating range;
• regulating, by a pressure regulator arranged downstream from the secondary gas compressor, a pressure of the vented field gas to be within the gas pressure operating range at the fuel intake;
• and
• providing, by an engine fuel rail, the vented field gas from the pressure regulator to the fuel intake, the vented field gas being provided to the fuel intake as a portion of the gas fuel source.