Direct arrival signature estimates,申请号US201314377296-传众专利搜索

Direct arrival signature estimates

申请公布号：US9594179(B2)

申请号：US201314377296

申请日期：2013.01.11

申请公布日期：2017.03.14

申请人：

ExxonMobil Upstream Research Company

发明人：Norris Michael W.;Reilly Joseph M.

分类号：G01V1/38;G01V1/36;G01V1/28

主分类号：G01V1/38

代理机构：

ExxonMobil Upstream Research Company Law Department

代理人：ExxonMobil Upstream Research Company Law Department

地址：Spring TX US

摘要：Method for estimating source signature of a marine seismic source array in a naturally band-limited subsurface region, for designature processing of resulting seismic data. Direct arrivals identified in the streamer receivers' records (131) provide a far-field estimate of the source signature, provided that the subsurface naturally limits frequencies to below the first notch frequency in the amplitude response of the seismic streamer receiver array. Processing of the direct arrivals may include move out or alignment correction (132), signal enhancement (133), summing of direct arrival traces over all offsets (134), windowing or tapering of direct arrivals (135), and deterministic corrections to the combined direct arrivals to compensate for ghosting and streamer array effects (136).

主权项：1. A method for estimating source signature of a marine seismic source array in a naturally band-limited subsurface region, for subsequent processing of resulting seismic data, comprising: obtaining a signal record from at least one seismic receiver deployed in the source array's far field, and identifying direct arrivals from the source array in the signal record; and generating a far-field estimate of the source signature by using a computer to process the direct arrivals to enhance them and to compensate for surface ghosting or receiver streamer array effects or both, wherein the direct arrivals used to generate the far-field estimate of the source signature were recorded by the at least one seismic receiver deployed in the source array's far field.