engineers solved the problem at the refinery by sending gas and liquid petroleum through surrounding pipelines to the sea. - 石油工人 個照片及圖片檔工程師, 貨運
professionals planning over laptop while standing against oil pump during sunset - 石油工人 個照片及圖片檔原油, 汽油, 天然氣
professional worker in a protective helmet, glasses and green vest writes data into a tablet at oil enterprise - 石油工人 個照片及圖片檔石油工業, 汽油, 原油
portrait of african ethnicity construction engineer check for safety by digital tablet in oil refinery plant at night - 石油工人 個照片及圖片檔建築地盤, 非洲人
worker engineer man in a white protective helmet, glasses and vest using portable mobile tablet to check pressure at gas enterprise outdoor - 石油工人 個照片及圖片檔工作, 能源, 檢查
african ethnicity construction engineer working on tablet inspecting the build project in oil refinery plant at night - 石油工人 個照片及圖片檔加班
african construction engineer working on laptop reviewing build project in the industrial area. - 石油工人 個照片及圖片檔石油工業, 黑人種族, 職業