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三维速度场模型适用于构造幅度变化快、井位多、构造覆盖面积大和构造复杂的地区,仅以单井合成记录通过TDQ转换的时深关系难以真实反映深层构造信息。段六拨油田北翼官东6X1断块位于沧东凹陷南皮斜坡区,北部即孔东一级断层构造带,南部为段六拨断层,由于受到这两个主要断裂带的影响,地震资料品质受到影响,从而对地层层速度产生影响,因此提高速度转换的精度是此次构造研究的主要目的。研究证明,经过井震结合产生的叠加速度模型转换成均方根速度模型之后,转换的层速度模型大大提高了构造成图的精度,通过质量控制环节将TDQ模型与Depth Express速度场模型进行对比,通过井分层信息验证模型的精准性。
The three-dimensional velocity field model is suitable for the areas where the amplitude of structural changes is fast, the positions are many, the tectonic area is large and the structure is complex. It is difficult to reflect deep structure information by using TDQ conversion only in single-well synthesis. The Seongdong 6X1 fault block in the north wing of the Duanliuduo Oilfield is located in the Nangipi slope in the Cangdong Sag. In the north is the Kongdong-1 fault structure belt and in the south is the Duanliuzi fault. Due to the influence of these two major fault zones, the seismic data The quality is affected, which will have an impact on the formation velocity. Therefore, improving the accuracy of velocity transformation is the main purpose of this structural study. The results show that the converted layer velocity model greatly improves the precision of the constructed map after the superposition velocity model generated by the combination of well and earthquake is converted into a rms velocity model. The TDQ model is compared with the Depth Express velocity field model through quality control , To verify the accuracy of the model through well layering information.