滑动扫描地震数据谐波干扰压制技术与应用

摘要

Slip sweep as an important and efficient vibroseis acquisition technology has matured and is widely used,but the harmonic interference effects on the seismic data is the most important issue that the technology have to facing.Now commonly used technology of eliminating harmonic noise in models slip-sweep vibroseis data is based on the vibrator ground force signal to design harmonics forecasting factor and extract harmonics interference from correlated record da-ta, and then remove them from the disturbed area.However,the harmonic noise can't be removed by this method when the vibrator ground force signals is missing for the instrument limit in real seismic data acquisition.In this paper,we respec-tively uses model-based method of slip sweep harmonic noise elimination for seismic data with ground force signal and GPS time and method of independent simultaneous sweeping adjacent noise elimination for those without such informa-tion. Conducting analysis and test demonstrates the effect of the application.%滑动扫描作为一种重要的可控震源高效采集技术已广泛应用，但其面临的首要问题是谐波干扰对地震资料的影响。目前常用的模型法滑动扫描谐波干扰压制方法是基于震源力信号设计谐波预测算子求取相关后记录中的谐波干扰，将求得的谐波干扰从被干扰区域中剔除。在实际地震采集数据中，有时由于仪器限制导致震源力信号的缺失，因此无法应用该方法压制谐波。本文针对具备力信号信息及GPS时间的模型法滑动扫描谐波干扰压制方法和无以上野外采集信息的情况为例，尝试应用独立同步扫描邻炮干扰压制方法进行分析和处理试验，取得较好的应用效果。