论文部分内容阅读
由于CRS叠加考虑了反射层的局部特征和第一菲涅耳带内的全部反射,从而更充分地利用了多次覆盖反射数据的信息。就目前的地震资料处理技术而言,它是最佳的零偏移距成像方式。本论文利用改进型的参数优化技术,得到高质量的CRS运动学参数剖面,并利用参数剖面计算出叠加孔径,实现了基于最优孔径的CRS叠加,使CRS参数的用途得到了充分利用。模型数据和实际资料的试算表明,基于最优孔径的CRS叠加的成像剖面与传统CRS叠加剖面相比,有着较高的信噪比和同相轴的连续性。
Since the CRS superposition takes into account the local features of the reflective layer and the total reflections within the first Fresnel zone, the information covering the reflected data multiple times is utilized more fully. It is the best zero-offset imaging method available for current seismic data processing techniques. In this dissertation, an improved parameter optimization technique is used to obtain a high-quality CRS kinematic parameter profile and the superimposed aperture is calculated by using the parameter profile. The CRS superposition based on the optimal aperture is realized, which makes the use of CRS parameters fully utilized. The trial calculation of the model data and the actual data shows that the CRS superimposed imaging profile based on the optimal aperture has a higher signal-to-noise ratio and continuity of the events than the conventional CRS superimposed profile.