The document discusses the Beam Gas Compressor, which uses the energy from a pump jack to compress natural gas produced from an oil well. It operates the gas through check valves during the pumping cycle, compressing it and adding it to the flow line. This reduces casing pressure and solves issues like gas interference downhole. Installation examples and case studies show how it increases production rates and well performance. The compressor is mounted to the pumping unit without permanent modification and can optimize marginal wells through reliable gas compression.