Title
Estimation of the displacements among distant events based on parallel tracking of events in seismic traces under uncertainty
Date Issued
01 July 2018
Access level
metadata only access
Resource Type
journal article
Author(s)
Publisher(s)
Elsevier Ltd
Abstract
The method we propose in this paper seeks to estimate interface displacements among strata related with reflection seismic events, in comparison to the interfaces at other reference points. To do so, we search for reflection events in the reference point of a second seismic trace taken from the same 3D survey and close to a well. However, the nature of the seismic data introduces uncertainty in the results. Therefore, we perform an uncertainty analysis using the standard deviation results from several experiments with cross-correlation of signals. To estimate the displacements of events in depth between two seismic traces, we create a synthetic seismic trace with an empirical wavelet and the sonic log of the well, close to the second seismic trace. Then, we relate the events of the seismic traces to the depth of the sonic log. Finally, we test the method with data from the Namorado Field in Brazil. The results show that the accuracy of the event estimated depth depends on the results of parallel cross-correlation, primarily those from the procedures used in the integration of seismic data with data from the well. The proposed approach can correctly identify several similar events in two seismic traces without requiring all seismic traces between two distant points of interest to correlate strata in the subsurface.
Start page
81
End page
90
Volume
116
Language
English
OCDE Knowledge area
Ingeniería eléctrica, Ingeniería electrónica
Ingeniería civil
Subjects
Scopus EID
2-s2.0-85046772735
Source
Computers and Geosciences
ISSN of the container
00983004
Sponsor(s)
The authors are grateful for the support of the National Council for Scientific and Technological Development (grant 142682/2008-0 ), the National Agency of Petroleum, Natural Gas and Biofuels and the Department of Electrical Engineering at the Pontifical Catholic University of Rio de Janeiro (PUC-Rio) . The authors would like to acknowledge Ana Carolina Alves Abrêu for her assistance in reviewing this article.
Sources of information:
Directorio de Producción Científica
Scopus