摘要
多次波是海洋地震勘探中最突出的问题之一,多次波的存在严重影响地震波成像的真实性和可靠性。为了有效压制多次波并突出有效波,开发了联合建模匹配衰减技术。思路是:基于原始波场尽可能准确地预测各种类型多次波,通过一次性匹配减去对多次波进行最大程度衰减,同时避免了多次匹配而产生的噪声,并且在稀疏域采用多道均衡匹配滤波技术对各多次波模型和地震数据进行联合匹配衰减。结果表明,该技术在莺歌海盆地高温高压区东方区和乐东区的应用取得了显著的效果,可为中深层的勘探开发提供高质量的地震资料处理结果。
Multiple waves are one of the most prominent problems in marine seismic exploration,and the authenticity and reliability of seismic wave imaging are seriously affected due to the presence of multiple waves.In order to effectively suppress multiple waves and highlight effective waves,a joint modeling matching attenuation technology was developed.The idea is to predict as accurately as possible various types of multiple waves based on the original wave field,minimize the attenuation of multiple waves by subtracting multiple waves at one time,and avoid the noise generated by multiple matches,and use multi-channel balanced matching filtering technology to jointly match and attenuate each multiple wave model and seismic data in the sparse domain.The results show that the application of this technology in the eastern and ledong areas of the high temperature and high pressure zone of yingge sea Basin has achieved considerable results,which can provide high-quality seismic data processing results for the exploration and development of medium and deep layers.
作者
孟凡可
安黎明
李永康
MENG Fanke;AN Liming;LI Yongkang(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Henan Provincial Aerial Geophysical Exploration and Remote Sensing Center,Zhengzhou 450002,China)
出处
《科技和产业》
2023年第1期276-282,共7页
Science Technology and Industry
基金
河南省科技攻关项目(222102210310)。
