大王庄油田大101块滩坝砂体底面等高程法小层对比及效果分析

The Isobath Sublayer Correlation Method on the Beach-bar Sand Bottom of Block DA 101 in Dawangzhuang Oilfield and Its Effect Analysis

大王庄油田大101块沙河街组二段为一套滨浅湖亚相的滩坝沉积,容易形成同期不同体沉积现象,由于井距大、地震资料分辨率低等原因,在小层对比过程中易造成对比结果与油水关系或注采关系的矛盾。利用同一期滩坝沉积过程中底面应为近水平的特点,提出了底面等高程法,以大101块的具体井组为例进行小层对比,其结果与其他研究方法相比更具合理性。

The second member of Shahejie Formation in Dawangzhuang Oilfield was a set of shallow and shore lake deposits,it was easy to form a deposit in the same period and different shapes.And because of big well space and lower resolution of the seismic data,there were many problems between the injection/production relationship and sublayer correlation.In consideration of characteristics of the bottom surface of the beach and bay of the same period being near horizontal,the method of isobath sublayer correlation is proposed.By taking the well group in Block Da 101 as example for sublayer correlation,compared with the result of other research,the result of the study is more reasonable.