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Estimation of Structural Uncertainty Lateral Distribution
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
The method of predicted seismic depth errors estimation by computation of standard deviation (structural uncertainty) map is suggested in this work. The deterministic approach, based on the analysis of internal convergence of seismic data is proposed. The main development of the proposed method is that the map of the error distribution is constructed, where the uncertainty is calculated at each point of the map, instead of using constant value across the whole studied area. Map calculation is done on the basis of formalized procedures of the main kinematic parameters analysis: time and velocity. External convergence of seismic data with well data is also taken into account. The method was tested on several fields in the north of West Siberia basin, in geological setting of strong near surface layer velocity variations and deep velocity anomalies due to overpressure.