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为了解决油田内、油田间、洼陷间、凹陷间的地层划分和对比问题,针对地震资料纵向分辨率低和高分辨率层序地层对比难以在平面上进行连续追踪的缺点,提出了井震约束下的高分辨率层序地层学对比方法。该方法共包括5步:进行研究区地震反射界面的研究;建立地质分层与地震反射界面的关系;地震层序的划分及地震层序对比;在井震约束下进行层序划分和长期基准面旋回识别;进行中期和短期基准面旋回的识别。在南堡凹陷高尚堡、柳赞、唐海3个油田进行了应用并取得了较好的效果,找出了3个油田间地层的对应关系,实现了3个油田间大层和小层的统一划分。
In order to solve the problem of stratigraphic division and contrast between oil fields, inter-depressions and sags, and for the shortcomings of low vertical resolution of seismic data and high-resolution sequence stratigraphy, it is difficult to track continuously in the plane. Constrained by high resolution sequence stratigraphy contrast method. The method includes five steps: researching the seismic reflection interface in the study area; establishing the relationship between the geological stratification and the seismic reflection interface; dividing the seismic sequence and the seismic sequence contrast; Face cycle recognition; mid-term and short-term cycle reference recognition. Three oilfields, Gaoshangbao, Liuzan and Tanghai in Nanpu Sag have been applied and achieved good results. Corresponding relations between the strata in three oilfields have been found, and three large and small layers of oilfields have been realized Unified division.