【摘要】 三维多波地震勘探是地震勘探当前研究的热点。本文针对转换波资料处理中存在的数字检波器频率动态范围变化大,产生高低频噪声严重,三维资料共转换点求取不准及炮检距较大,射线路径不对称和各向异性的影响而无法准确求取转换波速度等难题,运用转换波处理中的极化滤波去噪、三分量旋转、三维转换波转换点定位、四参数速度分析和叠前时间偏移等技术,通过对胜利油田垦71地区单点数字检波器采集的三维转换波地震资料的处理,较好地解决了以上问题。更多还原

【Abstract】 The 3D multi-wave seismic exploration is hot-point studied in seismic exploration currently. In face of difficulties in converted wave data processing such as large dynamic range of frequency in digital geophone, producing serious noises with higher and lower frequencies, unable to acquire correct CCP of 3D data and large offsets and non-symmetric ray-path and anisotropic influence making difficult in acquire accurate converted wave velocity. Using polarization filtering for denoise, 3D rotation, CCP positioning of 3D converted wave, 4-paramter analysis and prestack time migration in converted wave processing can better solve abovementioned issues by case of processing of 3D converted wave data acquired by single-point digital geophone in Keng-71 zone of Shengli Oilfield.更多还原