19世纪中叶以来,油气勘探的思路经历了三次重大突破。第一次突破,从油苗到背斜理论;第二次突破,从背斜理论到圈闭理论;第三次突破,从圈闭理论到含油气系统。找油思路的变化促进油气勘探科技的发展. Since the mid-19th century, the thinking of oil and gas exploration has undergone three major breakthroughs. The first breakthrough, from oil and gas to the anticline theory; the second breakthrough, from the anticline theory to the trap theory; the third breakthrough, from the trap theory to the petroleum system. Changes in oil route to promote the development of oil and gas exploration technology.