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Abstract

Summary

Systematic well reviews are essential for improving on future drilling performance. The accuracy of depth prognosis results has being analyzed in detail using an extensive dataset; 253 recently drilled petroleum wells in the Netherlands. The outcome reflects uncertainties in seismic interpretation and –more importantly- velocity models. The data indicates that the predicted depth at reservoir level shows an uncertainty of 1.2% (1 sigma). Also a clear bias towards predicting too shallow is evident from the dataset. A possible explanation based on the mechanism of selection bias is being presented.

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/content/papers/10.3997/2214-4609.201601144
2016-05-30
2024-04-26
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References

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