Research output: Contribution to journal › Conference article › peer-review
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 language | English |
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Pages (from-to) | 5343-5347 |
Number of pages | 5 |
Journal | SEG Technical Program Expanded Abstracts |
Volume | 34 |
DOIs | |
State | Published - 1 Jan 2015 |
Event | SEG New Orleans Annual Meeting, SEG 2015 - New Orleans, United States Duration: 18 Oct 2011 → 23 Oct 2011 |
ID: 74777252