本文首次将决策树引入油气勘探之中,并详细介绍了用决策树进行油气勘探经济决策的方法和原理。该方法在准噶尔盆地西北缘冲断带的应用是成功的,对该区的油气勘探起到了积极的指导作用,取得了较为明显的经济效益。此外,经实践证明该方法还可广泛用来解决其它各类勘探开发决策问题,具有普遍的实用价值。 This paper, for the first time, introduces decision tree into the exploration of oil and gas, and introduces in detail the method and principle of decision tree for economic decision-making of oil and gas exploration. The application of this method to the northwestern margin of the Junggar Basin has been successful, which has played a positive role in guiding the exploration of oil and gas in the area and has achieved obvious economic benefits. In addition, it has been proved that this method can be widely used to solve other types of exploration and development decision-making problems and has universal practical value.