1887

Abstract

Summary

Intra Ordovician interpretation has been historically one of the main pitfalls in Murzuq Basin, even when tracing different lithological units and/or lateral facies change in areas with dense well control.

Seismic attributes provide a useful tool to characterize reservoirs because they transform seismic amplitudes into elastic properties , which are related with facies and petrophysical properties. Seismic and well log data are integrated and geological interpretation can be done in seismic attributes domain.

In our case of study, pre-stack seismic inversion results, P-wave impedance and Vp/Vs ratio supported a conceptual geological model for Murzuq Basin (Libya) main reservoir. P-wave impedance helped to separate facies and sedimentary environments in a very complex glaciogenic Upper Ordovician reservoir. Vp/Vs ratio delimited sandstone bodies related with advance and retreat of the glacial ice in the area. Both seismic volumes matched very well with log data and they helped to define the northern stratigraphic closure of the reservoir.

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/content/papers/10.3997/2214-4609.201601338
2016-05-31
2020-04-03
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References

  1. Reveron,J. Obregon,F. Cobos,C. Blake,B. Ron,M. Buitrago,J. and Erquiaga,M.
    (Repsol) [2015] Importance of Proper Seismic Gather Conditioning and Low-frequency model building for successful pre-stack simultaneous seismic inversion. 77th EAGE Conference & Exhibition 2016, Madrid, Spain 2015. TUP808.
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    [2006] Identification of early Llandovery (Silurian) anoxic palaeo-depressions at the western margin of the Murzuq Basin (southwest Libya). GeoArabia, 11(3), 101–118.
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