公开(公告)号：US08942061B2

公开(公告)日：2015-01-27

申请号：US13934068

申请日：2013-07-02

Applicant: WesternGeco L.L.C.

Inventor： Roshitashva Singh ,  Johan O. A. Robertsson ,  Ottar Kristiansen

IPC: G01V1/20 ,  G01V1/38 ,  G01V1/36

CPC classification number: G01V1/201 ,  G01V1/364 ,  G01V1/3808 ,  G01V2210/56

Abstract: A seismic streamer system for acquiring seismic data includes a plurality of first cable sections each employing a first sensor configuration therein, and at least one second cable section operatively connected to one or more of the first cable sections and employing a second sensor configuration therein. In various embodiments of the streamer system, one or more of the second cable sections are sparsely integrated into a streamer, a streamer array and/or a seismic spread. The first sensor configuration may, e.g., include a conventional hydrophone distribution, and the second sensor configuration may, e.g., include multicomponent sensors such as at least one of a particle velocity sensor, a pressure gradient sensor, an accelerometer and a combination thereof. The present invention is useful for attenuating noise in the measured seismic data as well as deghosting the data. A particular deghosting process includes decomposing the up- and down-going parts of the vertical component of particle velocity associated with the acoustic wave reflections from the strata.

Abstract translation: 用于采集地震数据的地震拖缆系统包括多个第一电缆段，每个第一电缆段均采用其中的第一传感器构造;以及至少一个第二电缆段，可操作地连接到一个或多个第一电缆段并且在其中采用第二传感器配置。 在拖缆系统的各种实施例中，一个或多个第二电缆部分被稀疏地整合到拖缆，拖缆阵列和/或地震展开中。 第一传感器配置可以例如包括常规水听器分配，并且第二传感器配置可以例如包括诸如粒子速度传感器，压力梯度传感器，加速度计及其组合中的至少一个的多组分传感器。 本发明对于衰减测量的地震数据中的噪声以及数据的去晕影是有用的。 特定的反虚反应过程包括分解与来自地层的声波反射相关联的粒子速度的垂直分量的上升和下降部分。