Oil worker drilling for oil on rig

industry oil rig oil drill oil worker helmet standing working holding smiling expertise concentration protection safety drilling oil industry power equipment overalls protective workwear power occupation oil field petrol fossil fuel fuel and power generation oil safety glasses hard hat one mid adult man only vertical outdoors day close up 30 34 years waist up part of differential focus one person mid adult man petroleum roughnecks platform caucasian ethnicity work smile skill safe man male daytime one person only male