射线追踪驱动的三维斜缆地震资料海底多次波预测  

Water Bottom Multiple Prediction Driven by Ray Tracing for 3D Marine Inclined Streamer Data

作　　者：李键 秦德文 尹文笋 石辉 姜秀萍[2,3] 谭军[2,3] 夏冬明[2,3] 赵波[2,3] Li Jian;Qin Dewen;Yin Wensun;Shi Hui;Jiang Xiuping;Tan Jun;Xia Dongming;Zhao Bo(Shanghai Branch of China National Offshore Oil Corporation(China)Company Limited,Shanghai 200335,China;College of Marine Geoscience,Ocean University of China,Qingdao 266100,China;Key Laboratory of Submarine Geosciences and Prospecting Techniques,Ministry of Education,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200335 [2]中国海洋大学海洋地球科学学院,山东青岛266100 [3]中国海洋大学海底科学与探测技术教育部重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2024年第6期133-144,共12页Periodical of Ocean University of China

基　　金：国家重大科技专项(KJGG2022-0302);山东省重大科技创新工程项目(2019JZZY010803);崂山实验室科技创新项目(LSKJ202204803);国家自然科学基金项目(42074138);中海石油(中国)有限公司上海分公司技术服务课题(CCL2022SHP007RS)资助。

摘　　要：斜缆采集已成为海上宽频地震采集中常用的采集方式,本文针对斜缆地震数据的多次波预测问题,提出了射线追踪驱动的三维斜缆地震资料海底多次波预测方法。首先基于叠加速度(或偏移速度)的射线追踪方法,根据炮点深度、检波点深度模拟出海底多次波的大体时间延迟量,并基于原始数据的相关谱分析确定出与海底多次波周期拟合最佳的延迟时,然后通过时空域(偏移距域)的褶积过程实现海底多次波预测。模型数据试验和对实际数据的处理试验结果均证实了本文提出的方法能够有效地预测斜缆地震资料海底多次波,其在实际斜缆地震数据的多次波压制处理中具有广阔的应用前景。The inclined streamer seismic survey has become a common acquisition technology in offshore broadband frequency seismic data acquisition.A 3D multiple prediction method driven by ray tracing for marine inclined streamer data is proposed.Firstly,based on the ray tracing method using stack velocity(or migration velocity),the time delay of seafloor multiple is simulated according to the depth of the shot point and the depth of the detection point.Then,based on the correlation spectrum analysis of the original data,the optimal time delay fitting with the seafloor multiples period is determined.Finally,the seafloor multiple will be predicted through the convolution process in time-space domain(offset domain).The results of theoretical model experiments and field data processing both show that this method can effectively predict seafloor multiple,and it has broad application prospects in multiple suppression in marine inclined streamer data processing.

关 键 词：多次波压制 海底多次波预测 射线追踪 三维斜缆 东海地震资料 

分 类 号：P631.4[天文地球—地质矿产勘探]