海上地震勘探气枪漏气的定量评价探讨

Quantitative Evaluation of Air Gun Leakage in Offshore Seismic Exploration

唐松华 余锦 张福祥 周政 张丽娟 李尚坤

TANG Songhua YU Jin ZHANG Fuxiang ZHOU Zheng ZHANG Lijuan LI Shangkun

中石化海洋石油工程有限公司，上海　200120

SINOPEC Offshore Oilfield Services Company, Shanghai 200120, China

空气枪震源在海洋地震资料采集中使用广泛，漏气是比较常见的一种现象。在发生气枪漏气等异常情况而又不能套用关枪标准进行质量控制时，针对单个气枪或多个气枪的漏气对整个枪阵的影响，从近场子波相关性和能量一致性方面，提出了对整个枪阵开展定量分析评价的方法，可以为气枪阵列的激发品质提供定量评价参考。

Air gun seismic source is widely used in marine seismic data acquisition, and air leakage is a common phenomenon. When there is an abnormal situation such as air gun leakage, and the quality control cannot be carried out according to the gun closing standard, the influence of the air leakage of a single air gun or multiple air guns on the entire gun array is considered from the aspects of near-field wavelet correlation and energy consistency. Finally, this paper has put forward the quantitative analysis and evaluation method for the whole gun array, which can provide quantitative evaluation reference for the excitation quality of air gun array.

https://doi.org/10.3969/j.issn.1008-2336.2020.04.020