基于强波阻抗反射界面的静校正方法及应用  

The static correction method of wave impedance layer and its application

作　　者：王海立[1] 王永生 王彪 马立新[1] 张先建 WANG Hai-Li;WANG Yong-Sheng;WANG Biao;MA Li-Xing;ZHANG Xian-Jian(Qinghai Geophysical Prospecting Department of BGP,CNPC,Dunhuang 736202,China;Qinghai Oilfield Company,CNPC,Dunhuang 736202,China)

机构地区：[1]中国石油集团东方地球物理勘探有限责任公司青海物探处,甘肃敦煌736202 [2]中国石油集团青海油田公司勘探事业部,甘肃敦煌736202

出　　处：《物探与化探》2018年第2期347-351,共5页Geophysical and Geochemical Exploration

基　　金：十三五国家重大专项课题"陆上宽频高密度地震勘探配套技术"(2017ZX05018-003)

摘　　要：柴达木盆地环英雄岭地区浅部存在一个强波阻抗界面,以该波阻抗界面作为模型反演标志层,计算高、低频静校正分量,充分利用了浅层强波阻抗界面的深度信息、折射信息、反射信息,兼顾了低、高频静校正的计算;同时,可通过提高该波阻抗界面的成像品质来判断静校正精度。该方法在环英雄岭地区的应用大幅度提高了地震剖面信噪比和复杂构造成像精度,从而表明基于强波阻抗反射界面的静校正技术是解决英雄岭极低信噪比区复杂静校正问题的有效方法。Yingxiongling area of Qaidam Basin has a strong wave impedance interface,which seryes as the earthquake model inversion symbol layer to calculate low and high frequency static correction components.The method makes full use of the depth information,refraction information and reflection information of the interface of shallow strong wave im pedance,and takes into account the low and high frequency.Large scale application of this method in Yingxiongling area improved SNR of seismic section and complex structure imaging precision,which indicates that the static correction is an effective method to solve extremely low SNR complex static correction of Yingxiongling area.

关 键 词：低信噪比 波阻抗 建模 静校正 英雄岭 

分 类 号：P631[天文地球—地质矿产勘探]