Virtual source redatuming is an effective way for improving repeatability of onshore seismic data acquired with buried receivers that can suffer from near-surface variations and acquisition geometry changes. However, redatuming is less effective in correcting for amplitude variations of the downgoing wavefield caused by variable source signatures, coupling or other factors. We present an improved redatuming workflow, which has the benefits of the virtual source approach and corrects for additional nonrepeatability of the downgoing wavefield between surveys. The method involves construction of the virtual source gather for each survey, deconvolution with the corresponding point spread-function (PSF) and convolving with a reference PSF. Here we employ a reference PSF computed for a homogeneous replacement near surface. This reduces imaging artifacts and provides additional control over the dominant frequency of the output data. We demonstrate a significant repeatability improvement using a field 4D multi-survey onshore dataset from Saudi Arabia.

Original languageEnglish
Pages (from-to)5343-5347
Number of pages5
JournalSEG Technical Program Expanded Abstracts
Volume34
DOIs
StatePublished - 1 Jan 2015
EventSEG New Orleans Annual Meeting, SEG 2015 - New Orleans, United States
Duration: 18 Oct 201123 Oct 2011

    Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

ID: 74777252