Wellbore stability of highly deviated well intervals for large-diameter boreholes
Javad Someehneshin, Zijian Li, Weizhou Quan, Abdelsalam Abugharara, Stephen Butt
In the proceedings of: GeoVirtual 2020: 73rd Canadian Geotechnical ConferenceABSTRACT: In this paper, the analytical study, and the Discrete Element Method (DEM) simulation were conducted to evaluate the wellbore stability of steeply dipping mining utilizing various wellbore failure criteria. Mining site data of surface and subsurface in-situ stress, and rock mechanics properties were collected to support the study. The dimensions of the studied wellbore were 100m maximum depth, 1.3m maximum diameter, and 45 degrees inclination. The wellbore rock failure was analyzed, and the critical wellbore pressure after drilling in four essential azimuths (i.e. 0o, 90o, 180o, and 270o) using pure water was calculated. The results of the individual and the analytical-DEM coupled study demonstrated the wellbore stability.
RÉSUMÉ: Dans cet article, une étude analytique et une simulation de la méthode des éléments discrets (DEM) ont été menées pour évaluer la stabilité des puits de forage à forte inclinaison en utilisant divers critères de défaillance des puits de forage. Des données sur le site minier des propriétés in situ et des contraintes in situ et de mécanique des roches ont été recueillies à l'appui de l'étude. Les dimensions du puits de forage étudié étaient de 100 m de profondeur maximum, 1,3 m de diamètre maximum, 45 degrés d'inclinaison. La rupture de la roche de forage a été analysée, la pression critique de forage après le forage dans quatre azimuts essentiels (c.-à-d. 0o, 90o, 180o et 270o) en utilisant de l'eau pure a été calculée. Les résultats de l'individu et de l'étude couplée à l'analyse DEM ont approuvé la stabilité du puits de forage.
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Someehneshin, Javad, Li, Zijian, Quan, Weizhou, Abugharara, Abdelsalam, Butt, Stephen (2020) Wellbore stability of highly deviated well intervals for large-diameter boreholes in GEO2020. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Someehneshin_GEO2020_278,
author = {Someehneshin, Javad}, {Li, Zijian}, {Quan, Weizhou}, {Abugharara, Abdelsalam}, {Butt, Stephen},
title = Wellbore stability of highly deviated well intervals for large-diameter boreholes ,
year = 2020
}
title = Wellbore stability of highly deviated well intervals for large-diameter boreholes ,
year = 2020
}