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准噶尔盆地南缘近期的油气勘探表明其具有巨大的资源潜力。文中运用以基准面旋回为基础的层序地层理论 ,将该区中、新生代地层划分为 5个长期地层旋回 :LSC1、LSC2、LSC3、LSC4、LSC5 ,并总结了旋回的发育特征。在旋回格架内分析了其气储集层、盖层的分布及储盖组合的发育特征 ,指出本区研究层段主要发育LSC5、LSC4、LSC2和LSC14套储盖组合 ,其中LSC4、LSC1为最有利的含气储盖组合。综合生油、构造等其它成藏条件 ,作者指出了本区两个有利的气聚集带 :南缘山前气聚集带 (侏罗系为主要目的层 )和西湖 -玛纳斯 -呼图壁有利气聚集带 (下第三系为主要目的层 )。
Recent hydrocarbon exploration in the southern margin of the Junggar Basin shows that it has tremendous potential for resources. Based on the sequence stratigraphy theory based on the reference plane cycle, the paper divides the Mesozoic and Cenozoic strata into five long-term stratigraphic cycles: LSC1, LSC2, LSC3, LSC4 and LSC5, and summarizes the development characteristics of the cycle. The gas reservoirs and caprock distributions and the developmental characteristics of reservoir-cap assemblages were analyzed in the swirling grid. It is pointed out that the LSC5, LSC4, LSC2 and LSC14 reservoir-cap sets are mainly developed in the research intervals in the study area, of which LSC4 and LSC1 are The most favorable gas storage cap combination. Synthesizing other oil accumulation and tectonic conditions, the authors point out two favorable gas accumulation zones in this area: the southern margin of the former gas accumulation zone (Jurassic as the main target) and the West Lake-Manas-Hutubi A favorable gas accumulation zone (the main purpose of the next Tertiary strata).