As an oilfield equipment operator, your job is to set up and operate heavy equipment on an oil rig, such as pressure control equipment or safety systems designed to control each well. Some details of this job depend on the type of equipment you are using, but oilfield equipment operators usually oversee crew members on the rig and help enforce environmental safety guidelines. Oilfield equipment operators often work long hours with the rest of the crew and may live on or near the oilfield for weeks at a time. Depending on the needs of your employer, you may also perform minor repairs, switch between rigs as needed, monitor gauges and valves, and help prevent spills caused by faulty equipment.