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    SYSTEM AND METHOD FOR PROCESSING SEISMIC DATA
    1.
    发明公开
    SYSTEM AND METHOD FOR PROCESSING SEISMIC DATA 审中-公开
    系统和方法处理地震数据的

    公开(公告)号：EP2691793A4

    公开(公告)日：2015-10-28

    申请号：EP12764597

    申请日：2012-02-21

    申请人： CHEVRON USA INC

    发明人： ROMERO ARTURO E JR ,  GREENE MICHAEL G

    IPC分类号： G01V1/36

    CPC分类号： G01V1/36 ,  G01V1/307 ,  G01V2210/584 ,  G01V2210/74

    摘要： A computer-implemented method for processing seismic data includes the determining, from the seismic data, a first amplitude attribute map at a first image depth corresponding to a shallow attenuating body, and a second amplitude attribute map at a second image or target depth. The first and second amplitude attribute maps are then normalized, and a ratio map is determined based on a ratio of the normalized first and second amplitude attribute maps. The ratio map is scaled to yield a scale factor map, which is then applied to the seismic data to compensate for effects of shallow overburden attenuation.

    HIGH RESOLUTION ESTIMATION OF ATTENUATION FROM VERTICAL SEISMIC PROFILES
    4.
    发明公开
    HIGH RESOLUTION ESTIMATION OF ATTENUATION FROM VERTICAL SEISMIC PROFILES 审中-公开
    弱化垂直地震剖面的高分辨率估计

    公开(公告)号：EP3004937A2

    公开(公告)日：2016-04-13

    申请号：EP14726393.3

    申请日：2014-05-27

    申请人： Statoil Petroleum AS

    发明人： CARTER, Andrew James

    IPC分类号： G01V1/30 ,  G01V1/42

    CPC分类号： G01V1/42 ,  G01V1/306 ,  G01V2210/56 ,  G01V2210/584 ,  G01V2210/614

    摘要： Method of obtaining an attenuation model estimate for a vertical seismic profile(VSP), comprising: receiving a vertical seismic profile dataset, the VSP dataset having been generated by recording a wavefield at a plurality of depth levels;building an estimate of a plurality of changes in an attribute of the wavefield sensitive to attenuation between respective pairs of depth levels based on the VSP dataset;producing a plurality of corrected changes in the attribute between the respective pairs of depth levels by modeling local interference of the wavefield from interfaces near each of the depth levels using information comprising measured well log and/or borehole information and correcting the estimated changes in the attribute for this interference;choosing and fitting an attenuation law to the corrected transfer functions;outputting an attenuation model.

    SYSTEM AND METHOD FOR PROCESSING SEISMIC DATA
    6.
    发明公开
    SYSTEM AND METHOD FOR PROCESSING SEISMIC DATA 审中-公开
    系统和方法处理地震数据的

    公开(公告)号：EP2691793A2

    公开(公告)日：2014-02-05

    申请号：EP12764597.6

    申请日：2012-02-21

    申请人： Chevron U.S.A. Inc.

    发明人： ROMERO, Arturo, E., Jr. ,  GREENE, Michael, G.

    IPC分类号： G01V1/24 ,  G01V1/28 ,  G06F19/00

    CPC分类号： G01V1/36 ,  G01V1/307 ,  G01V2210/584 ,  G01V2210/74

    摘要： A computer-implemented method for processing seismic data includes the determining, from the seismic data, a first amplitude attribute map at a first image depth corresponding to a shallow attenuating body, and a second amplitude attribute map at a second image or target depth. The first and second amplitude attribute maps are then normalized, and a ratio map is determined based on a ratio of the normalized first and second amplitude attribute maps. The ratio map is scaled to yield a scale factor map, which is then applied to the seismic data to compensate for effects of shallow overburden attenuation.