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Abstract

Summary

A high resolution full wavefield inversion (FWI-res) has been conducted over sub-cubes from the Wingate 3D seismic survey. Three wells provide calibration to the prestack elastic inversion of a deep-seated Carboniferous reservoir section. The non-linear FWI-res technique uses higher order scattering (or multiple energy) to constrain the output. The inversion is performed on migrated seismic data, including a demigration step over the target interval. This object oriented approach is possible in the plane wave (Taup) domain, when assuming a layered medium immediately below the target location. The FWI-res inversion scheme requires only limited user input: cleaned-up Common Image Gathers, top horizon to demigrate the data and a velocity model. Data pre-conditioning is carried out by dip filtering in the timespace domain. This new trace-by-trace inversion is robust and satisfactory results are obtained even in poor data zones.

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/content/papers/10.3997/2214-4609.20141414
2014-06-16
2019-12-09
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References

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