Modelling and dynamic analysis of an anti-stall tool in a drilling system including spatial friction

Roeland Wildemans (Corresponding author), Arviandy Aribowo, Emmanuel Detournay, Nathan van de Wouw

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

19 Citaten (Scopus)
139 Downloads (Pure)

Samenvatting

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.

Originele taal-2Engels
Pagina's (van-tot)2631-2650
Aantal pagina's20
TijdschriftNonlinear Dynamics
Volume98
Nummer van het tijdschrift4
Vroegere onlinedatum27 jun. 2019
DOI's
StatusGepubliceerd - 1 dec. 2019
EvenementNODYCON 2019 : First International Nonlinear Dynamics Conference - Rome, Italië
Duur: 17 feb. 201920 feb. 2019
https://nodycon.org/2019/

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