公开(公告)号：US20150301211A1

公开(公告)日：2015-10-22

申请号：US14256376

申请日：2014-04-18

Applicant: CGG Services SA

Inventor： Celine LACOMBE ,  Henning HOEBER

IPC: G01V1/30 ,  G01V1/38

CPC classification number: G01V1/308 ,  G01V1/38 ,  G01V2210/52 ,  G01V2210/58 ,  G01V2210/6222

Abstract: Methods for determining a seismic wave's propagation velocity in water for monitor seismic data of a 4D data set analyze a relationship between seafloor time-shifts and source-receiver offsets. The time-shifts are differences of normal move out corrected seafloor source-receiver travel times for pairs of traces. Each pair includes a base trace extracted from base seismic data of the 4D data set and a monitor trace extracted from the monitor seismic data, the traces corresponding to the same seafloor bin and having the same source-receiver offset.

Abstract translation: 用于确定地震波在水中的传播速度用于监测4D数据集的地震数据的方法分析了海底时移与源 - 接收器偏移之间的关系。 时间偏移是正常移出修正后的海底源 - 接收器走线时间对差异的差异。 每对包括从4D数据集的基础地震数据提取的基本轨迹以及从监测地震数据提取的监测轨迹，该轨迹对应于相同的海底仓并且具有相同的源 - 接收器偏移。