Triassic - jurassic sedimentary sequence was a reformed basin . which is a set of coal - bearing sequence overlay by cenozoic red molasse . from 1993 to 2001 , baolang and benbutu oil field , with an oil - bearing area of 26 . 3 squre kilometer and proven reserves of 4172 + 104t , have been found . oil production of 23 + 104t p . a 盆地自1993年9月开始规模性油气勘探，到2001年底，发现并探明了宝浪、本布图两个油田，累计含油面积26 . 3km ~ 2 ，探明油气储量4172 10 ~ 4t (油当量) ，建成原油生产能力23 10 ~ 4t ，取得了比较显著的经济效益。
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