Recent applications of seismic data in reservoir characterization, direct hydrocarbon indication, and production monitoring rely on the accuracy of elastic logs (density and sonic). Trying to develop (semi) quantitative seismic-based studies requires the use of well-to-seismic calibration; the well information is used as a bridge between the geology and the surface seismic data. Nevertheless, we must take into account that well logs are also indirect measurements of rock properties and subject to various sources of errors. Borehole wall rugosity due to washouts (or even threaded well bore) and mud filtrate invasion are the main sources of uncertainty on elastic logs....
Elastic log editing and alternative invasion correction methods
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Guilherme F. Vásquez, Lúcia D. Dillon, Carlos L. Varela, Guenther S. Neto, Raquel Q. Velloso, Cassiane F. Nunes; Elastic log editing and alternative invasion correction methods. The Leading Edge ; 23 (1): 20–25. doi: https://doi.org/10.1190/1.1645452
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