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利用构造-沉积分析方法,探讨南堡凹陷老爷庙横向背斜对东营组扇三角洲沉积体系的控制作用.通过对西南庄边界断层和老爷庙背斜的几何学解剖,确定老爷庙背斜为西南庄断层断面弯曲控制的横向背斜.该背斜从沙河街组一段沉积期开始发育,馆陶组沉积期叠加了NE向的走滑断层.含砾率统计发现,含砾率高值均分布在横向背斜转折端、横向背斜和边界断层交汇控制了主水系的入口,提供长距离输沙路径.从井-震结合剖面和古地貌图识别出横向背斜发育时期的上、下坡折位置.扇三角洲平原受上坡折控制,发育在背斜转折端;下坡折控制扇三角洲前缘和前扇三角洲的分界.边界断层控制的横向背斜在沉积盆地内普遍发育.横向背斜控制长距离输沙和相分配模式对砂体预测具有重要的意义.
Using the tectono-sediment analysis method, the controllability of the Lateral anticline of the Laoyemiao in the Nanpu sag to the depositional system of the Dongying Formation fan delta is discussed.Through the geometrical anatomy of the anticline of the Southwest Zhuang border and the Laoyemiao anticline, the Laoyemiao anticline is determined as the southwest The lateral anticlines controlled by the bend control of Zhuang fault section developed from the first depositional stage of Shahejie Formation and the NE-oriented strike-slip faults superimposed during the deposition of Guantao Formation.The statistics of pebble rate shows that the distribution of high gravelly rate At the turning point of the horizontal anticlines, the intersection of the horizontal anticlines and the boundary faults controls the entrance of the main water system and provides a long-distance sediment transport path. The upper and lower slopes of the lateral anticlines during the development of the lateral anticlines are identified from the well-seismic combination sections and palaeogeomorphology maps Fan delta plain controlled by uphill slope developed at the anticlinal turning point, and the downhill slope controlled the boundary between delta front and fan delta.The transverse anticlines controlled by the boundary faults generally develop in the sedimentary basin. Inclined control of long-distance sediment transport and phase distribution model is of great significance to sand body prediction.