【摘要】 应用地球物理资料研究构造、储层．已有一些比较成熟的方法，但用于研究含油气系统仍在探索之中。含油气系统涉及油气运移、盖层、关键排烃期及油气聚集等方面内容。泥岩压实曲线可以反映油气运移规律，而泥岩欠压实带通常表现为低速异常。依据盖层中的异常压力可以研究盖层封闭油气特性，而地震速度的异常变化恰好能指示这种异常压力的存在。利用地震资料也可以研究关键排烃期及油气聚集。文中以海拉尔盆地的乌尔逊、贝尔凹陷为例，具体说明应用地震资料研究含油气系统的可能性。更多还原

【Abstract】 There are some perfect methods for researching into structure and reservoir byanalysing geophysical data i however, people have been seeking for desirab1e methods for probing into hydrocarbon-bearing system. Hydrocarbon bearing system involves hydrocarbon migration,barrier layer,key hydrocarbon-deaerated period, hydrocarbon accumulation and so on. The compaction curve of mud formation may reflect the law of hydrocarbon migration,and the poorly-compacted interval of mudformation usually corresponds to low velocity anomaly. Hydrocarbon sealing characteristics of barrier layer can be known by analysing its inner abnormal pressure,which can be shown by the abnormal variation of seismic velocity. Seismic data canalso be used to ascertain key hydrocarbon-deaerated period and hydrocarbon accumulation. The Wuerxun and Beier depressions in the Hailaer basin are taken as theexamples to indicate the possibility of analysing the hydrocarbon-bearing system byusing seismic data.更多还原