DMO技术在苏北二维地震资料处理中的应用效果

由于苏北盆地历经了多次地质运动，造成地层构造复杂，倾角多变，断层多等系列地质因素。以往这一地区的地震资料处理，通常采用的是常规水平叠加，作为地层界面水平的情况是较为适用的。当地层界面倾斜时，它不能实现真正的共反射点叠加，在构造复杂地区，会使叠加剖面分辨率降低。DMO技术（倾角时差校正技术）是目前资料处理中的一项非常重要的技术，它主要是针对叠前能识别出倾角的道集中（如共炮检距道集），经特定的速度分析和倾角时差计算，来消除正常时差校正（NMO）无法消除的地层倾角的影响，实现叠前部分偏移，得到最佳叠加速度，以达到提高剖面叠加质量的目的。

On application effect of DMO technology in treatment of planar seismic data in North Jiangsu

As North Jiangsu Basin underwent geological movement time after time, the stratigraphic structures became complicated, dip angle varied and fault increased. Anciently, the treatment of seismic data in the area was dependent on conventional horizontal superposition and was in point for horizontal stratigraphic interface; when the stratigraphic interface inclined, the conventional horizontal superposition could not realize the eutectic reflection point superposition and might decrease the resolution of the superposed profile. DMO technology (dip angle moveout correction) was an important technology treating seismic data, removing the influence caused by stratigraphic dip angle, realizing a partial excursion before superposition, obtaining a optimal acceleration and achieving the objective of improving profile superposition quality.