senior engineer looking at a diagram of a new oil pipeline from an oil refinery. - 石油工人 個照片及圖片檔工程師, 氣體, 石油化工廠
a male engineer was checking equipment in a chemical plant with a tablet computer - 石油工人 個照片及圖片檔天然氣, 原油, 工程師
Three roughnecks work on an oil drilling rig in the middle of Lake Maracaibo. The rig in western Venezuela is owned by Maraven, one of several oil...委內瑞拉, 原油
professional worker in helmet and protective glasses measuring and analyzing data on digital tablet on oil field - 石油工人 個照片及圖片檔
petroleum engineers work together using radios. follow up or follow up on the production plan. they are experts and work in the oil, natural gas refining industry. - 石油工人 個照片及圖片檔
portrait of oil and gas engineers working outdoors measuring and patrol for safety - 石油工人 個照片及圖片檔氣體, 原油
