37 Commissioning and decommissioning services of equipment for use during oil and gas operations, namely drilling operations, well stimulation operations, well workover operations, well staging operations, wireline operations, fishing operations, coiled tubing operations, snubbing operations; and technical support services in preparation for or during oil and gas operations, namely technical troubleshooting problems with oil and gas pumping and extraction equipment, software, computer hardware and computer peripherals, namely magnetic sensors; wellsite supervising services for oil and gas operations, namely drilling operations, well stimulation operations, well workover operations, well staging operations, wireline operations, fishing operations, coiled tubing operations, snubbing operations and well blow-out prevention operations; supervising and training services for operation of computer software, computer hardware and computer peripherals, namely magnetic sensors, for use during oil and gas operations, namely drilling operations, well stimulation operations, well workover operations, well staging operations, wireline operations, fishing operations, coiled tubing operations, snubbing operations and well blow-out prevention operations