渤海三维多分量地震勘探水平分量方位校正
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摘要
在海上三维多分量地震勘探中,不论采用何种海底电缆采集系统进行海上作业,在室内资料处理中,都要首先计算海上水平分量检波器的方位定向。然后,再对水平分量实施方位旋转,以便得到径向R分量和切向T分量的波场。结合渤海进行的海上三维多分量地震勘探情况,为了达到对海上水平分量记录进行准确的相位和能量校正的目的,分两步实施。第一步是利用海底电缆检波器海上定位资料对水平分量的方位进行校正,以消除大部分的方位能量误差;第二步是在第一步校正的基础上,利用直达波信息进行第二次方位校正,进一步消除方位能量误差。
In 3D marine multi-component seismic exploration, orientation of horizontal component receivers is first calculated during data processing, in spite of using what kind of seabed-cable acquisition system. The horizontal components are then rotated in order to obtain the records on radial and transverse components. According to the marine situation of the 3D multiple component exploration, we realized the accurate energy and phase correction for the horizontal components in two steps. Most orientation energy errors can be eliminated orientation correction based on the field navigation-positioning data. The orientation energy error will be further eliminated by the second direction correction using direct wave information.
引文
[1]何汉漪,朱宏彰,张树林.海上多波地震在莺歌海盆地的应用[J].中国海上油气(地质),1999,13(5):310315.HEHan yi,ZHUHong zhang,ZHANGShu lin.Applicationofmulti-componentseismicinYinggehaibasin[J].ChinaOffshoreOilandGas(Geology),1999,13(5):310315.
    [2]周建新,姚姚.海上多波地震勘探检波器方位误差校正[J].中国海上油气(地质),1999,13(5):353358.ZHOUJian xin,YAOYao.Orientationcorrectionforgeophoneinoffshoremulti-componentseismicexploration[J].ChinaOffshoreOilandGas(Geology),1999,13(5):353358.
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