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Abstract

Summary

In this paper, Extended Elastic Impedance (EEI) analysis was proposed for extracting geomechanical parameters from seismic data. In order to evaluate capabilities of this method for obtaining geomechanical parameters, a shale-carbonate reservoir in south-west of Iran was studied as a case study. Petrophysical data and core analysis were used to estimate dynamic and static moduli of the reservoir rock followed by calculating the corresponding EEI spectra to a range of incident angles to select the angles of maximum correlation for different geomechanical parameters. Then, placing together two seismic attributes, namely Intercept (A) and Gradient (B), a 3D reflectivity pattern of EEI was generated at any desired angle. Finally, upon performing model-based inversion on the obtained EEI reflectivity pattern, we came with cubes of geomechanical parameters. A comparison between measured data and the corresponding EEI inversion results confirmed that, prestack seismic data can be adequately used to estimate geomechanical parameters across the entire body of reservoir. Results of this research showed that, EEI analysis can upgrade seismic geomechanics to a higher level where a 3D cube of any rock mechanical parameter can be extracted from seismic data.

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/content/papers/10.3997/2214-4609.201801613
2018-06-11
2024-04-25

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References

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Determination of Geomechanical Parameters Using Extended Elastic Impedance (EEI)
Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201801613
/content/papers/10.3997/2214-4609.201801613
/content/papers/10.3997/2214-4609.201801613
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