压缩感知提频技术在莺琼盆地W1井区地震资料处理中的应用  

Application of compressed sensing frequency lifting method in seismic data processing of well W1 in the Yingqiong basin

作　　者：李雷 王祥春[2] 刘梦灵 廖仪 张国栋 LI Lei;WANG Xiangchun;LIU Mengling;LIAO Yi;ZHANG Guodong(Research Institute of Hainan Branch,CNOOC,Haikou,Hainan 570300,China;School of Geophysics and Information Technology,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中海石油(中国)有限公司海南分公司研究院,海南海口570300 [2]中国地质大学(北京)地球物理与信息技术学院,北京100083

出　　处：《地质学报》2024年第6期1918-1927,共10页Acta Geologica Sinica

基　　金：中海石油(中国)项目(编号CCL2022HNFN0285)资助的成果。

摘　　要：针对莺琼盆地W1井区地震资料分辨率低、砂体展布及叠置关系复杂的问题,综合莺琼盆地W1井区三个年份的原始资料,设计了一套包括预处理、去噪处理、偏移以及偏后处理的整套资料处理流程。在偏后处理中将压缩感知提频技术应用于叠前深度偏移剖面上,并与蓝色滤波提频技术、零相位反褶积提频技术进行了对比,体现了压缩感知提频技术的优势;运用压缩感知提频技术解决了莺琼盆地W1井区目前存在的地质问题,证明其在莺琼盆地W1井区后续开发实施上的合理性。结果表明:相较于其他两种提频技术,采用压缩感知提频技术可以保护主频以下可靠的低频信息,拓展高频,提高了资料的分辨率。通过压缩感知提频后的地震数据,气水关系更加清晰,砂体的叠置特征得以真实呈现,验证了其对后续油气勘探的指示意义。压缩感知提频技术作为一种新的地震资料处理技术,能够较好地解决地震资料分辨率低、砂体展布及叠置关系复杂等问题,值得在实际地震资料处理中推广应用。In order to solve the problems of low-resolution seismic data and the complex sand body distribution and overlapping relationships in the W1 well area of the Yingqiong basin,a comprehensive data processing process was developed based on three years of original data.This process includes pre-processing,denoising,migration,and bias post-processing.Duringthe bias post-processing stage,the compressed sensing frequency lifting method was applied to the pre-stack depth migration profile and compared with the blue filtering frequency lifting method and the zero-phase deconvolution frequency lifting method.The advantages of the compressed sensing frequency lifting method were demonstrated,and the application of the method to solve current geological problems proved its rationality in the subsequent development and implementation in the W1 well area of the Yingqiong basin.The results show that,compared with the other two frequency lifting methods,the compressed sensing frequency lifting method effectively preserves reliable low-frequency information below the main frequency while expanding the high frequency range and enhancing data resolution.By using the compressed sensing frequency lifting method of seismic data,the gas-water relationship becomes clearer,and the stacking characteristics of sand bodies can be accurately represented.This verifiestheir indicative significance in guiding subsequent oil and gas exploration efforts.As a new seismic data processing method,the compressed sensing frequency lifting method can better solve the problems of low seismic data resolution,sand body distribution,and complex overlapping relationships.Therefore,it is worth popularizing and applying in practical seismic data processing.

关 键 词：压缩感知 砂体叠置 气水关系 地震资料处理 莺琼盆地 

分 类 号：P631.44[天文地球—地质矿产勘探] P618.13[天文地球—地质学]