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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2023
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| Online Access: | https://www.redalyc.org/articulo.oa?id=56880049003 https://www.redalyc.org/journal/568/56880049003/ https://www.redalyc.org/journal/568/56880049003/html/ https://www.redalyc.org/journal/568/56880049003/56880049003.epub https://www.redalyc.org/journal/568/56880049003/movil |
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Table of Contents:
- Joint stochastic simulation of petrophysical properties with elastic attributes based on parametric copula models Daniel Vázquez-Ramírez Van Huong Le Martín A. Díaz-Viera Raúl del Valle-García Arturo Erdely Ciencias de la Tierra Co copulas Bernstein simulation Archimedean The spatial stochastic co-simulation method based on copulas is a general method that allows simulat-ing variables with any type of dependency and probability distribution functions. This flexibility comes from the use of a copula model for the representation of the joint probability distribution function. The method has been mainly implemented through a non-parametric approach using Bernstein copulas and has been successfully applied for the simulation of petrophysical properties using elastic seismic attributes as secondary variables. In the present work this method is implemented through two other approaches: parametric and semi-parametric. Specifically, for the parametric approach the family of Archimedean copulas is used. First, the parametric approach is validated against a published case, and then a comparison of the three approaches in terms of accuracy and performance is made. The results showed that the parametric approach is the one that reproduces the data statistics worse and presents greater uncertainty with a lower computational cost, while the non-parametric approach was the one that best reproduces the dependence of the data at a high computational cost. The semi-parametric approach reduces the computational cost by 10% compared to the non-parametric approach, but its accuracy is significantly degraded. 2023 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56880049003 https://www.redalyc.org/journal/568/56880049003/ https://www.redalyc.org/journal/568/56880049003/html/ https://www.redalyc.org/journal/568/56880049003/56880049003.epub https://www.redalyc.org/journal/568/56880049003/movil 10.22201/igeof.2954436xe.2023.62.2.1593 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.2 Vol.62