40 oil and gas well treatment services, namely, oil and gas well fracturing, acidizing, oil well perforation services, foam washing, well displacements, jet thru, gas lift, drill stem testing, drying, reactor cool-downs, ship and barge purging, foam acid, pipeline testing, compressor station testing, pipeline and plant purging, pressure testing, frac plug drill-out assist; oil and gas well treatment services, namely, oil and gas well fracturing, acidizing, oil well perforation services, foam washing, well displacements, jet thru, gas lift, drill stem testing, drying, reactor cool-downs, ship and barge purging, foam acid, pipeline testing, compressor station testing, pipeline and plant purging, pressure testing, frac plug drill-out assist, all utilizing compressed nitrogen