摘要
神狐隆起北缘地震资料多次波极为发育,造成速度拾取不准,地震成像精度低,导致低幅圈闭难落实。为解决该区多次波压制难的问题,本次研究根据不同于反射波的周期性、时差以及地质空间统计特征,开展炮集域、共偏移距域以及CMP道集上对多次波进行联合衰减;最终确定了采用SDM、SWD、广义3D SRME进行多次波建模,进而利用得到的多次波模型,进行多模型三维自适应匹配减方法进行多次波进行压制,最后结合高精度Radon多次波压制技术进行残余多次压制。通过以上技术的应用,有效压制了目标区多次波,为速度建模及叠前深度偏移成像提供了高品质基础资料,同时为该区低幅圈闭勘探提供了准确成像的地震资料,也为其他地区多次波压制提供了技术参考。
Multi-wave is extremely developed in the seismic data of the northern edge of Shenhu uplift resulting in inaccurate velocity picking,low seismic imaging accuracy,and difficult to implement low-amplitude traps.In order to solve the problem of difficult multi-wave suppression in this area,according to the periodic,time difference and geospatial statistical characteristics different from the reflected waves,this study carried out joint attenuation of multi-wave in the shot set domain,common offset domain and CMP track set.Finally,the multi-wave modeling was determined to use SDM,SWD and generalized 3D SRME.Then,the multi-model three-dimensional adaptive matching reduction method was used to suppress the multi-wave model.Finally,the residual multi-wave suppression was combined with high-precision Radon multi-wave suppression technology.Through the application of the above technologies,the multi-wave in the target area was effectively suppressed,providing high-quality basic data for velocity modeling and prestack depth migration imaging.At the same time,the seismic data of accurate imaging for the low-amplitude trap exploration in this area was provided,and the technical reference for multi-wave suppression in other areas was also provided.
作者
张璐
张坤坤
支玲
吴涵
蒋林峰
Zhang Lu;Zhang kunkun;Zhi Ling;Wu Han;Jiang LinFeng(Zhanjiang Branch of,CNOOC Ltd.,Zhanjiang 524057;Data Processing Co.Geophysical-China Oilfield Services Limited,Zhanjiang 524057)
出处
《石化技术》
CAS
2024年第4期102-103,84,共3页
Petrochemical Industry Technology
