酒泉盆地油气勘探历程与启示

Petroleum Exploration History and Enlightenment in Jiuquan Basin

酒泉盆地油气勘探始于20世纪20年代,经历了先隆后坳的勘探历程,取得了丰硕的成果。回顾酒泉盆地81年油气勘探历程,每个勘探阶段都有其主要思路、技术手段、重大发现及经验教训。酒泉盆地勘探实践表明,油气勘探要以地质理论和地质认识为引领,以勘探技术作为支撑。具体表现在:以二级含油气构造带勘探理论为指导,发现了一批背斜油藏;地质与工程紧密结合,形成青西油田适应性配套勘探技术,助力青西油田勘探取得突破;深化地质认识,三次转变勘探思路,建立营尔凹陷成藏模式,发现酒东油田;突出精细地质研究,应用新技术和新方法,在老油区精细勘探,不断取得新进展。

Petroleum exploration in Jiuquan basin started in the 1920s.Experienced the exploration process from uplift to depression,fruit⁃ful results in petroleum exploration have been achieved.The article reviews the 81⁃year exploration history in Jiuquan basin,sort out the main idea,technical means,significant discoveries and experience in every stage.Petroleum exploration practices show that the exploration should be foucued on geological research,guided by geological theory and geological understanding,and should be supported by explora⁃tion technology.Guided by the theories for exploration of secondary hydrocarbon⁃bearing structural belts,a number of anticline reservoirs have been discovered.Geology and engineering are closely integrated to form a supporting exploration technology adaptable for Qingxi oil⁃field,helping Qingxi oilfield make breakthroughs in exploration.After deepening geological understanding and changing exploration ideas three times,a hydrocarbon accumulation model was established for the Ying’er sag and Jiudong oilfield was discovered.New progresses have been made successively due to fine exploration in existing oil blocks after highlighting fine geological research and applying new tech⁃nologies and methods.