Oil and gas drilling and pumping; installation, maintenance and repair of oil, gas, and natural gas liquids pipelines

Natural gas liquefaction services; oil and gas production services; and processing of oil, gas, and natural gas liquids

Analysis of oil and gas fields; exploration and searching of oil and gas; geophysical exploration for the oil industry; geophysical exploration for the gas industry; oil and gas field surveying; oil and gas prospecting; oil and gas well testing; surveying of oil and gas beds and fields