Abstract
This paper investigates the effects of a down-hole anti-stall tool (AST) in deviated wells on the drilling performance of a rotary drilling system. Deviated wells typically induce frictional contact between the drill-string and the borehole, which affects the drill-string dynamics. In order to study the influence of such frictional effects on the effectiveness of the AST in improving the rate-of-penetration and drilling efficiency, a model-based approach is proposed. A dynamic model with coupled axial and torsional dynamics of a drilling system including the down-hole tool in an inclined well is constructed. Furthermore, the frictional contact between the drill-string and the borehole is modelled by a set-valued spatial Coulomb friction law affecting both the axial and torsional dynamics. These dynamics are described by state-dependent delay differential inclusions. Numerical analysis of this model shows that the rate-of-penetration and drilling efficiency increases by inclusion of the AST, both in the case with and without spatial Coulomb friction. Furthermore, a parametric design study of the AST in different inclined drilling scenarios is performed. This study reveals a design for the AST, which gives optimal drilling efficiency, robustly over a broad range of inclined drilling scenarios.
| Original language | English |
|---|---|
| Journal | Nonlinear Dynamics |
| DOIs | |
| Publication status | E-pub ahead of print - 27 Jun 2019 |
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Keywords
- Drill-string dynamics
- Set-valued force laws
- Spatial Coulomb friction
- State-dependent delay differential inclusions
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Modelling and dynamic analysis of an anti-stall tool in a drilling system including spatial friction. / Wildemans, Roeland (Corresponding author); Aribowo, Arviandy; Detournay, Emmanuel; van de Wouw, Nathan.
In: Nonlinear Dynamics, 27.06.2019.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Modelling and dynamic analysis of an anti-stall tool in a drilling system including spatial friction
AU - Wildemans, Roeland
AU - Aribowo, Arviandy
AU - Detournay, Emmanuel
AU - van de Wouw, Nathan
PY - 2019/6/27
Y1 - 2019/6/27
N2 - This paper investigates the effects of a down-hole anti-stall tool (AST) in deviated wells on the drilling performance of a rotary drilling system. Deviated wells typically induce frictional contact between the drill-string and the borehole, which affects the drill-string dynamics. In order to study the influence of such frictional effects on the effectiveness of the AST in improving the rate-of-penetration and drilling efficiency, a model-based approach is proposed. A dynamic model with coupled axial and torsional dynamics of a drilling system including the down-hole tool in an inclined well is constructed. Furthermore, the frictional contact between the drill-string and the borehole is modelled by a set-valued spatial Coulomb friction law affecting both the axial and torsional dynamics. These dynamics are described by state-dependent delay differential inclusions. Numerical analysis of this model shows that the rate-of-penetration and drilling efficiency increases by inclusion of the AST, both in the case with and without spatial Coulomb friction. Furthermore, a parametric design study of the AST in different inclined drilling scenarios is performed. This study reveals a design for the AST, which gives optimal drilling efficiency, robustly over a broad range of inclined drilling scenarios.
AB - This paper investigates the effects of a down-hole anti-stall tool (AST) in deviated wells on the drilling performance of a rotary drilling system. Deviated wells typically induce frictional contact between the drill-string and the borehole, which affects the drill-string dynamics. In order to study the influence of such frictional effects on the effectiveness of the AST in improving the rate-of-penetration and drilling efficiency, a model-based approach is proposed. A dynamic model with coupled axial and torsional dynamics of a drilling system including the down-hole tool in an inclined well is constructed. Furthermore, the frictional contact between the drill-string and the borehole is modelled by a set-valued spatial Coulomb friction law affecting both the axial and torsional dynamics. These dynamics are described by state-dependent delay differential inclusions. Numerical analysis of this model shows that the rate-of-penetration and drilling efficiency increases by inclusion of the AST, both in the case with and without spatial Coulomb friction. Furthermore, a parametric design study of the AST in different inclined drilling scenarios is performed. This study reveals a design for the AST, which gives optimal drilling efficiency, robustly over a broad range of inclined drilling scenarios.
KW - Drill-string dynamics
KW - Set-valued force laws
KW - Spatial Coulomb friction
KW - State-dependent delay differential inclusions
UR - http://www.scopus.com/inward/record.url?scp=85068338186&partnerID=8YFLogxK
U2 - 10.1007/s11071-019-05075-6
DO - 10.1007/s11071-019-05075-6
M3 - Article
AN - SCOPUS:85068338186
JO - Nonlinear Dynamics
JF - Nonlinear Dynamics
SN - 0924-090X
ER -