CONTROL SYSTEM FOR REGULATING A GASEOUS FUEL SUPPLY TO AN ENGINE AT A WELLBORE

A gaseous fuel supply for an engine at a wellbore can be regulated using a control system. The control system can include a processing device communicatively coupled to one or more sensors to receive a fuel property measurement from the one or more sensors. The fuel property measurement can correspond to a first fuel source of the engine that can be used as the fuel supply for the engine to power an equipment to perform a wellsite operation. Additionally, the processing device can identify a predefined range of the fuel supply that corresponds to a target performance level of the engine. Based on the fuel property measurement, the processing device can determine that the first fuel source is outside of the predefined range. In response, the processing device can provide a second fuel source as the fuel supply. The second fuel source can enable the engine to operate at the target performance level.