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“宽 / 窄方位三维观测系统对地质目标地震成像分辨率的影响”是近年来?精度三维地震采集方法研究中的一个争论问题,本文利用三维地震物理模拟技术的优势,对上述争论问题进行实验研究。选择河道砂沉积构建地质模型,设计宽方位(16 线)和窄方位(8 线)两种观测系统进行三维模拟数据采集和处理,最后通过对三维偏移数据体的时间切片进行细致的宏观定性对比和微观定量分析,得出如下结论:在上覆地层相对平缓、速度横向变化不大的地质背景下,三维采集无论采用宽方位还是窄方位,都能对河道砂沉积实现高精度的地震成像,并且两者的成像分辨率基本相当。
“Wide / narrow azimuth three-dimensional observation system on geological target seismic imaging resolution ” is in recent years? Accurate 3D seismic acquisition method in a controversial issue, the use of three-dimensional seismic physics simulation technology advantages, the above debate Conduct experimental research. Select the sediment deposition of the river channel to construct the geological model, and design two kinds of observation system of wide azimuth (16 lines) and narrow azimuth (8 lines) to collect and process the three-dimensional simulation data. At last, through the detailed macroscopic qualitative analysis of the time slice of the three- Contrast and microscopic quantitative analysis, the following conclusions can be drawn: Under the geological background that the overlying strata is relatively flat and the lateral velocity does not change much, no matter whether the 3D orientation is wide or narrow, high precision seismic imaging , And the imaging resolution of both is basically the same.