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以萨北油田北二西区萨Ⅱ1+2b小层为例,在现代沉积和露头的指导下,利用密井网资料,建立了研究区复合分流河道砂体内部单河道的同层不同期和同层同期2种模式。基于分流河道砂体规模,按照高程差异、河间砂体、废弃河道以及河道砂体厚—薄—厚特征等4种单河道识别标志,在三维视窗内对连井剖面进行多角度观察和分析,识别单河道边界,在研究区北东方向识别出4条单河道,单河道宽度约为250～450m。
Taking the SaⅡ1 + 2b small layer in North Second West of Northern Saibei Oilfield as an example, under the guidance of modern sedimentation and outcrops, the data of close well network was used to establish the same period and the same period of single channel within compound distributary channel sandbody in the study area The same period in two modes. Based on the size of shunt channel sandbody, the multi-angle observation and analysis of the continuous well section is carried out in three-dimensional windows according to the four single-river identification marks such as elevation difference, Hejian sand body, abandoned river course and river channel sand body thickness-thin- , Identifying single river boundary. Four single rivers are identified in the northeast of the study area. The width of single river is about 250 ~ 450m.