公开(公告)号：US20140050049A1

公开(公告)日：2014-02-20

申请号：US13932800

申请日：2013-07-01

Applicant: WESTERNGECO L.L.C.

Inventor： PHILIP W. KITCHENSIDE ,  PHILIPPE CAPRIOLI

IPC: G01V1/36

CPC classification number: G01V1/36 ,  G01V1/38 ,  G01V2210/56

Abstract: A method is provided for deghosting marine seismic data. Marine seismic data is provided. The marine seismic data has a total acoustic wavefield that includes an upgoing acoustic wavefield and a downgoing acoustic wavefield. A deghosting operation to determine a part of the total acoustic wavefield corresponding to one of the upgoing acoustic wavefield and the downgoing acoustic wavefield is performed. The deghosting operation accounts for a varying vertical distance between a detector of a streamer and a sea surface. One of the upgoing and downgoing acoustic wavefields in the total acoustic wavefield is identified based on a result of the deghosting operation. The downgoing acoustic wavefield is removed from the total acoustic wavefield.

Abstract translation: 提供了一种用于防止海洋地震数据衰减的方法。 提供海洋地震资料。 海洋地震数据具有包括上行声波场和下行声波场的总声波场。 执行用于确定与上行声波场和下行声波场中的一个对应的总声波场的一部分的去虚反射操作。 反虚反光操作考虑了拖缆的检测器和海面之间的垂直距离变化。 基于反虚影操作的结果来识别总声波场中的上行和下行声波场之一。 从总声波场去除下行的声波场。