谱整形提高分辨率处理技术及应用效果分析

Spectrum-shaping based resolution improvement processing technology and the analysis on its application.

(中国石油化工股份有限公司石油物探技术研究院,江苏南京210014)

Wu Dali,Geophysical Research Institute,SINOPEC,Nanjing 210014,China

在常规高分辨率处理之后,CDP道集往往会出现同一反射波组波形不一致、时间不能对齐的现象,使得叠加剖面的分辨率降低。为了获得更高分辨率的剖面,探讨了进一步提高剖面分辨率的潜力所在,指出了实现高分辨率处理的主要技术难点是实现同一反射的波形一致和时间对齐。针对性地提出了地震资料提高分辨率处理的技术，包括低频道剔除、谱整形和再次静校正。实际应用效果表明,在常规高分辨率处理的基础上,采用低频道剔除、谱整形、再次静校正技术使剖面的分辨率和信噪比得到进一步提高。

After conventional high-resolution processing,the CDP gather always appears the inconformity of wave shape in the same reflection wave group,which decreases the resolution of stacking profile.In order to obtain the profile with higher resolution,we probed the potential of further improving the resolution of profile,and pointed out that the key technical point for high-resolution processing is to realize the conformity of wave shape and alignment of time for the same reflection wave group.Then,we proposed a series of technologies for resolution improvement processing,including low-frequency trace muting,spectrum shaping and secondary static correction.Actual application result shows that based on the conventional high-resolution processing,our methods can be used to further improve the resolution and signal-to-noise of the profile.