Application of microturbines to control emissions from associated gas

A method of controlling emission of an associated gas from an oil-producing well comprising:

• flowing the associated gas from the well, wherein the associated gas has a specific energy density below 350 Btu/scf or above 1700 Btu/scf and includes hydrocarbons, sulfur, and water;
• compressing the associated gas, with a gas compressor, to an associated gas pressure in correspondence with a control input;
• removing at least a portion of the sulfur and water from the associated gas to produce a fuel gas;
• controlling the gas compressor to control a fuel gas pressure of the fuel gas;
• flowing the fuel gas and air to a gas turbine;
• choking an air flow into an air inlet of an air compressor of the gas turbine in association with the control input;
• combusting the fuel gas and the air in the gas turbine in association with the control input;
• and
• driving an electric generator with combustion energy from the gas turbine by transmitting torque from the gas compressor to the electric generator via a driveshaft.