Design and development of a robust computing workflow to build rock physics templates from a micromechanical self-consistent model

López-Lena-Estrada, Alfredo; Meléndez-Martínez, Jaime; Valdiviezo-Mijangos, Oscar C.; Nicolás-López, Rubén

doi:10.1016/j.jappgeo.2020.104248

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…However, equations ( 1) and ( 2) must be iteratively solved. Lizcano-Hernández et al (2018) andLópez-Lena-Estrada et al (2021) portray flowcharts that explain the solution of these equations using the fixed point technique. Therefore, V peff can be simply estimated as…”

Section: Methods Self-consistent Methodsmentioning

confidence: 99%

“…As such, in our case, the heterogeneous isotropic composite represents the AND-2A drillcore. This SC approach has been already implemented to calculate the elastic properties of gas-oil shale systems (Valdiviezo-Mijangos & Nicolás-Lopez, 2014;Nicolás-López & Valdiviezo-Mijangos, 2016;Lizcano-Hernández et al, 2018;Nicolás-López et al, 2020;López-Lena-Estrada et al, 2021), to compute the elastic properties of shale rock samples from diverse geological origins (Nicolás-López et al, 2019) and, to estimate attenuation effects and dispersion of velocities on sandstones saturated with brine (Valdiviezo-Mijangos et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mineral lithotype identification on the andrill AND-2A drillcore, antarctica by using ternary mineral rock physics templates built from a self-consistent approach

Meléndez-Martínez

López

Valdiviezo

2022

GeofInt

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In this work, wet bulk density ?WBD and compressional wave velocity VP core log data obtained along the AND-2A drillcore are plotted on density-velocity ternary mineral Rock Physics Templates (RPTs) built from a Self-Consistent (SC) micromechanics modelling with the purpose to deter- mine data trends that allow us to assist in identifying mineral lithotypes and lithological features throughout the 1138 m length of the drillcore. The elastic properties of the three dominant miner- als present in the drillcore (mixed clays, quartz, and calcite) and the pore-filling fluid (brine) were used as input data for the SC model. The interpreted lithology is then compared to that obtained from the analysis of the AND-2A drillcore ?WBD and VP log data using Gardner type density-velocity cross plots. Results from both the SC and Gardner methods are in good agreement with the main lithologies present in the AND-2A drillcore already reported in the scientific literature. Our findings also agree well when compared to the lithological description of six selected rock samples obtained at different depths on the AND-2A drillcore. These results suggest that the proposed SC approach could be helpful to assist to identify lithology in scientific drill holes where downhole elastic proper- ties may exist over intervals where portions of the drillcore were not recovered. Furthermore, even when elastic property data sets come from measurements on cores, the SC approach is likewise useful because, from visual analysis alone, lithology can sometimes be difficult to determine, and additional information from the analysis of the elastic properties may provide more insight.

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Section: Methods Self-consistent Methodsmentioning

confidence: 99%