Multiple Regenerative Effects of the Bit-Rock Interaction in a Distributed Drill-String System

Faghihi, Mohammad Amin; Tashakori, Shabnam; Yazdi, Ehsan Azadi; Eghtesad, Mohammad

doi:10.1007/978-3-031-15758-5_50

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Then, the equations of motion are obtained by solving d'Alembert's solution and employing Riemann variables [28,29]. Subsequently, the following NTD model is given to represent the coupled axial-torsional dynamics of a drill-string [11,24,[28][29][30]:…”

Section: Mathematical Modellingmentioning

confidence: 99%

“…In this paper, a formulation for the regenerative effects caused by the bitbounce or the reverse rotation is developed. Compared to the previous related paper [24], the formulation is developed generally assuming that the blades are non-uniformly arranged on the cutting bit. The regeneration of the rock surface pattern at the bottom of the well is employed to determine the instantaneous depth of cut.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Axial–Torsional Dynamics of a Drilling Bit with Non-uniform Blade Arrangement

Faghihi

Yazdi

Mohammadi

et al. 2023

J. Vib. Eng. Technol.

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In this paper, a model for the coupled axial-torsional dynamics of a drilling bit with a non-uniform blade arrangement is proposed. The neutral-type time-delay model is used to model the drill pipes, which transfer the actuation force and torque to the bit. The employed bitrock interaction law is a rate-independent law including both cutting and frictional effects. A novel method for determining the depth of cut, which is the key component in estimating the cutting forces, is developed to capture different phenomena, including multiple-regenerative effects. In this method, a functional description of the well surface pattern is presented to determine the depth of cut. Unlike the previous studies, the well surface pattern evolution is represented by an algebraic equation rather than a partial differential equation (PDE). Illustrative simulation results are presented for a representative case study, which demonstrates the validity of the proposed model even in the presence of multiple-regenerative effects. The effect of the non-uniformly arrangement of the blades on the drilling vibration is also discussed. It is shown

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Section: Mathematical Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Axial–Torsional Dynamics of a Drilling Bit with Non-uniform Blade Arrangement

Faghihi

Yazdi

Mohammadi

et al. 2023

J. Vib. Eng. Technol.

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Control of Axial–Torsional Dynamics of a Distributed Drilling System

Faghihi,

Tashakori,

Yazdi

et al. 2024

IEEE Trans. Contr. Syst. Technol.

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Multiple Regenerative Effects of the Bit-Rock Interaction in a Distributed Drill-String System

Cited by 2 publications

References 11 publications

Axial–Torsional Dynamics of a Drilling Bit with Non-uniform Blade Arrangement

Axial–Torsional Dynamics of a Drilling Bit with Non-uniform Blade Arrangement

Control of Axial–Torsional Dynamics of a Distributed Drilling System

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