炮检分离浮动基准面处理方法在复杂山地地震成像中的应用——以准噶尔盆地南缘为例  

Application of Processing Method of Shot Inspection Separation Floating Datum in Seismic Imaging of Complex Mountain Area——A Case Study of the Southern Margin of Junggar Basin

作　　者：潘龙 马俊彦 秦宏国 阿里甫江·热合木吐力 韩晓丽 陈铭培 Pan Long;Ma Junyan;Qin Hongguo;Alipujiang·Rehemutuli;Hai Xiaoli;Chen Minpei(Geophysical Department,Research Institude of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Urumqi,Xinjiang,830013,China;Beijing TopGeo Energy Services Co.,Ltd.,Beijing,100012,China;Beijing Science and Technology Innovation Research Center,Beijing,101101,China)

机构地区：[1]中国石油新疆油田勘探开发研究院,新疆乌鲁木齐830013 [2]北京汤固能源科技有限公司,北京100012 [3]北京科技创新研究中心,北京101101

出　　处：《新疆地质》2021年第1期162-166,共5页Xinjiang Geology

摘　　要：准噶尔盆地南缘山地地表起伏剧烈、地下构造复杂且速度场纵横向变化大,地震数据原始单炮一致性差、信噪比低,这对山前带起伏地表地震成像造成了巨大挑战。为完善复杂条件下低信噪比山地资料的起伏地表处理技术,以提高山地资料地震成像精度,本文提出了保持炮检点一致性的浮动基准面处理方法。通过配套的时间域处理和深度域速度建模技术,实现了炮检点分离的浮动地表处理思路。基于南缘四棵树工区连片深度偏移生产中的实际应用,证明了该处理思路能够有效提高复杂构造成像质量,同时大大缩短处理项目周期,现已成为双复杂地区地震成像的主力技术手段,可以广泛推广到其它地区山前带起伏地表地震成像中。The mountainous surface in the southern margin of Xinjiang Junggar Basin is characterized by intense undulation,complex underground structure,large vertical and horizontal variation of velocity field,poor consistency and low signal-to-noise ratio of raw seismic data,which poses a great challenge to seismic imaging of undulated terrain in the piedmont belt.To perfect mountain complex conditions and low SNR data of irregular surface processing technology,thus improve the mountain seismic data imaging accuracy,this paper proposes a floating datum processing method which keeps shot and receiver consistency,through the supporting time domain processing and depth domain velocity modeling technology,implements the floating surface processing idea of shot and receiver separation.Based on the Sikeshu contiguous working area in the southern margin depth migration in the production of practical application,proved that the treatment can effectively improve the quality of complex structure imaging,at the same time,shorten project cycle,has now become a double complex areas the main seismic imaging technology,can be widely applied to other areas in the piedmont zone irregular surface seismic imaging.

关 键 词：准噶尔盆地南缘 速度模型 炮检点分离 叠前深度偏移 

分 类 号：P631.4[天文地球—地质矿产勘探]