Numerical and analytical study of rate effects on drilling forces under bottomhole pressure
| Autor: | Gilles Pelfrene, Michel Tijani, Emad Jahangir, Mohamed Amri, Hedi Sellami |
|---|---|
| Přispěvatelé: | Faculté des Sciences Mathématiques, Physiques et Naturelles de Tunis (FST), Université de Tunis El Manar (UTM), Centre de Géosciences (GEOSCIENCES), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Numerical resolution
0211 other engineering and technologies Drilling 02 engineering and technology Mechanics [SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Finite element method Rock cutting Pore water pressure Fully coupled Permeability (earth sciences) [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Hardening effect Geology ComputingMilieux_MISCELLANEOUS 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | International Journal of Rock Mechanics and Mining Sciences International Journal of Rock Mechanics and Mining Sciences, Pergamon and Elsevier, 2018, 110, pp.189-198. ⟨10.1016/j.ijrmms.2018.07.017⟩ |
| ISSN: | 1365-1609 1873-4545 |
| Popis: | The scope of this paper is to investigate rate effects on rock cutting process at bottomhole pressure . The solution of the cutting problem is derived in the framework of the theory of poroelastoplasticity. The problem is firstly solved analytically using some assumptions derived from the literature review. Then, a numerical resolution of the fully coupled problem is performed based on the finite element method . These two different approaches show that pore pressure in shear-dilatant rocks decreases as a function of the cutting velocity depending on rock permeability and interstitial fluid properties. Pore pressure change has a hardening effect leading to an increase of the rock drilling resistance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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