Support activities for petroleum and natural gas extraction

Service activities related to oil and gas mining carried out on the basis of fees or contracts, such as exploration services for oil or gas extraction in the traditional way, namely making geological observations, installing drilling equipment, repairing and dismantling oil well cementing. and gas wells, construction of wells, pumping production wells, blockage and closure of production wells, production testing, dismantling, liquefaction and regasification of natural gas for transportation needs at mining sites, experimental drilling for petroleum and natural gas refining and field fire fighting services petroleum and natural gas