In the early stage of its exploration and exploitation (1905-1949), five major events occurred in the order of time, namely: (1) The foundation of Yanchang Oil Plant and the first oil well in mainland China; (2) The voice of the oil field run by the local
In the early stage of its exploration and exploitation (1905-1949), five major events occurred in the order of time, namely: (1) The foundation of Yanchang Oil Plant and the first oil well in mainland China; (2) The voice of the oil field run by the local
在延长油矿早期（1905-1949年）勘探与开采中，有5件重大事件，即：从延长石油官厂的成立与中国近代陆上第一口油井、民办油矿的呼声、美孚对陕北的钻探与石油地质调查、中国人进行的早期陕北石油地质调查和有力地支援抗日战争的功臣油矿。