公开(公告)号：US20140316709A1

公开(公告)日：2014-10-23

申请号：US14358724

申请日：2012-11-14

Applicant: WESTERNGECO L.L.C.

Inventor： YING jI ,  Julian Edward Kragh ,  ALI Özbek

IPC: G01V1/36

CPC classification number: G01V1/364 ,  G01V1/36 ,  G01V2210/32 ,  G01V2210/3246

Abstract: Methods and apparatuses for processing seismic data to generate images or determine properties of an interior section of the Earth. The seismic data is processed to filter coherent noise such as ground roll noise from seismic survey data. The noise is attenuated using 3D and/or 2D fan filters, which may have combined low-pass and band-pass filters derived from signal decomposition. The filters are designed with selected operator length, velocity bands of signals and noises and frequency range for a primary trace and adjacent traces within the operator length. The data is decomposed with the filters into signals and noises, and the noises are then filtered from the decomposed data. The process may be repeated for various frequencies and traces within the seismic data. The methods may be used for surveys that have either regular or irregular seismic receiver or seismic source positions.

Abstract translation: 用于处理地震数据以产生图像或确定地球内部部分特性的方法和装置。 对地震数据进行处理，以从地震勘测数据中滤除地面滚动噪声等相干噪声。 使用3D和/或2D风扇滤波器对噪声进行衰减，其可以具有从信号分解导出的组合的低通滤波器和带通滤波器。 滤波器设计为选择的操作员长度，信号的速度带，噪声和频率范围，主要迹线和操作员长度内的相邻迹线。 数据用滤波器分解成信号和噪声，然后从分解的数据中滤出噪声。 可以对地震数据内的各种频率和迹线重复该过程。 这些方法可用于具有规则或不规则地震接收器或地震源位置的勘测。