Influencia de presión de percusión y rotación en rendimiento de aceros de perforación en roca arenisca y granodiorita, Contrata Minera Cristobal
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Date
2024-09
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Universidad Nacional de Trujillo
Abstract
El objetivo principal de la investigación fue evaluar la influencia de la presión de
percusión y rotación en el rendimiento de los aceros de perforación en rocas areniscas y
granodiorita en la Contrata Minera Cristobal.
El estudio adoptó un diseño experimental del tipo aplicativo, seleccionando la
Contrata Minera Cristobal E.I.R.L. como muestra. Para el contraste de hipótesis se realizó la
prueba no paramétrica de Mann-Whitney, que arrojó un p-value de 2.71e-06 (p<0.05). Los
resultados indicaron que la perforación en rocas arenisca (perforación frontonera) se realizó
con shank adapter HC50 macho, barra de 12 pies y broca R32x45 mm y en granodiorita
(perforación sostenimiento) se realizó con shank adapter HC50 hembra, barra de 08 pies y
broca R28x38 mm. Asimismo, en roca granodiorita, con presiones de percusión y rotación de
130 y 60 bares, respectivamente, el desgaste y la eficiencia fueron mayores comparados con
(0.40 US$/m).
la arenisca, que utilizó presiones promedias de 80 y 35 bares. El desgaste en el cuerpo de la
broca en roca granodiorita fue de 3.7 mm y en los insertos de 2.4 mm, con una eficiencia de
perforación de 2.31 m/min. En arenisca, el desgaste en el cuerpo de la broca fue de 2.45 mm
y en los insertos de 1.15 mm, con una eficiencia de 1.92 m/min. Los aceros de perforación
tuvieron un mejor rendimiento en arenisca comparado con granodiorita. Asimismo, el costo
total de perforación fue menor en arenisca (0.35 US$/m) en comparación con granodiorita
Finalmente se llegó a la conclusión que la presión de percusión y rotación influyen
significativamente en el rendimiento de los aceros de perforación. Un incremento de 1 bar en
presión de percusión y rotación aumenta el desgaste de los aceros de perforación y mejora su
rendimiento en perforación.
The primary objective of the research was to evaluate the influence of percussion and rotation pressure on the performance of drilling steels in sandstone and granodiorite rocks at the Contrata Minera Cristobal. The study adopted an applied experimental design, selecting Contrata Minera Cristobal E.I.R.L. as the sample. For hypothesis testing, the non-parametric Mann-Whitney test was performed, yielding a p-value of 2.71e-06 (p<0.05). The results indicated that drilling in sandstone (face drilling) was conducted with an HC50 male shank adapter, a 12-foot rod, and an R32x45 mm bit, while in granodiorite (support drilling), it was conducted with an HC50 female shank adapter, an-8-foot rod, and an R28x38 mm bit. Additionally, in granodiorite, with percussion and rotation pressures of 130 and 60 bars, respectively, wear and efficiency were higher compared to sandstone, which used average pressures of 80 and 35 bars. In granodiorite, the bit body wear was 3.7 mm, and the insert wear was 2.4 mm, with a drilling efficiency of 2.31 m/min. In sandstone, the bit body wear was 2.45 mm, and the insert wear was 1.15 mm, with a drilling efficiency of 1.92 m/min. Drilling steels performed better in sandstone compared to granodiorite. Additionally, the total drilling cost was lower in sandstone (0.35 US$/m) compared to granodiorite (0.40 US$/m). Finally, it was concluded that percussion and rotation pressure significantly influence the performance of drilling steels. An increase of 1 bar in percussion and rotation pressure increases the wear of drilling steels and improves their drilling performance.
The primary objective of the research was to evaluate the influence of percussion and rotation pressure on the performance of drilling steels in sandstone and granodiorite rocks at the Contrata Minera Cristobal. The study adopted an applied experimental design, selecting Contrata Minera Cristobal E.I.R.L. as the sample. For hypothesis testing, the non-parametric Mann-Whitney test was performed, yielding a p-value of 2.71e-06 (p<0.05). The results indicated that drilling in sandstone (face drilling) was conducted with an HC50 male shank adapter, a 12-foot rod, and an R32x45 mm bit, while in granodiorite (support drilling), it was conducted with an HC50 female shank adapter, an-8-foot rod, and an R28x38 mm bit. Additionally, in granodiorite, with percussion and rotation pressures of 130 and 60 bars, respectively, wear and efficiency were higher compared to sandstone, which used average pressures of 80 and 35 bars. In granodiorite, the bit body wear was 3.7 mm, and the insert wear was 2.4 mm, with a drilling efficiency of 2.31 m/min. In sandstone, the bit body wear was 2.45 mm, and the insert wear was 1.15 mm, with a drilling efficiency of 1.92 m/min. Drilling steels performed better in sandstone compared to granodiorite. Additionally, the total drilling cost was lower in sandstone (0.35 US$/m) compared to granodiorite (0.40 US$/m). Finally, it was concluded that percussion and rotation pressure significantly influence the performance of drilling steels. An increase of 1 bar in percussion and rotation pressure increases the wear of drilling steels and improves their drilling performance.
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TECHNOLOGY::Civil engineering and architecture::Geoengineering and mining engineering::Mining engineering