松南地区改造型断陷盆地的勘探潜力——以彰武断陷为例
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摘要
松辽盆地南部早白垩世发育30多个中小型断陷盆地,早白垩世末受到强烈挤压抬升改造,导致残存的各个断陷面积小、目的层埋藏浅,普遍认为其勘探潜力不大。通过利用地震、钻井等资料对彰武断陷研究表明,该断陷具有"早期深埋生烃,后期抬升改造,油气有效保存"的特点,勘探证实其油气资源丰富。该实例表明松南地区"小而浅"断陷具有良好的勘探前景。
There developed 30 small-middle rift basins in early Cretaceous in Songnan Basin,and the basins was uplifted and reconstructed by strong compression in the late period of early Cretaceous.The basins were considered to be low hydrocarbon exploration potential because the remained basins were small and target zones were shallowly buried.According to the research of seismic and log data of Zhangwu Rift Basin in Songnan Area,it indicates that it has three characteristics of early burial and hydrocarbon generation,late uplifting and reconstruction and effective preservation of oil and gas,exploration demonstrates that hydrocarbon resources are abundant in the depression,it demonstrates that it has better the exploration prospects in Songnan Area.
引文
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