Demagnetizing the drill string magnetic interference in Far North and in Pakistan
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Petroleum Exploration and Production Technology"
DOI: 10.1007/s13202-019-00801-7
Abstract: Drilling in Barents Sea proves to be a challenging task, as this region is situated in auroral zones having high geomagnetic latitude, where magnetic interferences develop from magnetic field and magnetic materials inside subsurface are… read more here.
Keywords: string magnetic; interference; demagnetizing drill; drill string ... See more keywords
Mechanical Behaviors of Bottom Hole Assembly with Bent-Housing Positive Displacement Motor Under Rotary Drilling
Sign Up to like & getrecommendations! Published in 2019 at "Arabian Journal for Science and Engineering"
DOI: 10.1007/s13369-017-2564-5
Abstract: Abundant drilling activities had confirmed that the fully rotary drilling can improve the rate of penetration effectively. However, the fully rotary drilling has brought some challenges for the trajectory control ability of the bottom hole… read more here.
Keywords: drilling; rotational speed; bent housing; drill string ... See more keywords
A non-linear Cosserat rod model for drill-string dynamics in arbitrary borehole geometries with contact and friction
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2019.04.023
Abstract: Abstract A model for drill-string dynamics in arbitrary borehole geometries based on the Cosserat rods theory is presented. The objective of this work is to exploit the capabilities of the Cosserat rods to capture the… read more here.
Keywords: drill string; arbitrary borehole; model; friction ... See more keywords
Buckling of a drill-string in two-sectional bore-holes
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2020.105427
Abstract: Abstract The nature of the phenomena of drill-strings buckling in channels of deep curvilinear bore-holes is essentially complicated by complex combination of acting distributed forces (gravity, contact and friction), large length of the string (leading… read more here.
Keywords: bore hole; geometry; drill string; buckling drill ... See more keywords
Nonlinear dynamic modeling of drill string in horizontal well - A geometrically exact approach
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2018.09.022
Abstract: Abstract A new nonlinear dynamic model of drill string in horizontal well is established based on geometrically exact beam theory and quadrature element method. The model proposed in this paper takes into account the geometric… read more here.
Keywords: nonlinear dynamic; geometrically exact; string horizontal; drill string ... See more keywords
Hybrid Interval Type-2 Fuzzy PID+I Controller for a Multi-DOF Oilwell Drill-String System
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3185021
Abstract: The control of multibody drill-string systems is not easy and designing such systems is considered challenging because of the difficulty in the dynamic analysis of its nonlinear characteristics and parametric uncertainties. An optimal hybrid interval… read more here.
Keywords: system; drill string; control; type fuzzy ... See more keywords
Suppressing Coupled Axial–Torsional Vibration of Drill-String System Considering Regenerative Cutting Induced Delay and Actuator Saturation
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3231288
Abstract: This article is concerned with suppression of coupled axial–torsional vibration of drill-string system, taking into account the state-dependent delay inherited from regenerative cutting of drill-bit on rock and actuator saturation of drill-rig. Note that, in… read more here.
Keywords: drill string; torsional vibration; axial torsional; coupled axial ... See more keywords
Modeling Friction Performance of Drill String Torsional Oscillation Using Dynamic Friction Model
Sign Up to like & getrecommendations! Published in 2017 at "Shock and Vibration"
DOI: 10.1155/2017/4051541
Abstract: Drill string torsional and longitudinal oscillation can significantly reduce axial drag in horizontal drilling. An improved theoretical model for the analysis of the frictional force was proposed based on microscopic contact deformation theory and a… read more here.
Keywords: friction; oscillation; model; drill string ... See more keywords
Study on dynamic characteristics of drill string in deep-water riserless drilling
Sign Up to like & getrecommendations! Published in 2023 at "Advances in Mechanical Engineering"
DOI: 10.1177/16878132221142113
Abstract: The cost and security of ocean drilling are directly related to the efficient exploration and development of ocean resources. The riserless drilling system is usually adopted in the ocean drilling. With the consideration of marine… read more here.
Keywords: drill string; water riserless; water; riserless drilling ... See more keywords
Non-Linear Dynamic Analysis of Drill String System with Fluid-Structure Interaction
Sign Up to like & getrecommendations! Published in 2021 at "Applied Sciences"
DOI: 10.3390/app11199047
Abstract: In this research, the non-linear dynamics of the drill string system model, considering the influence of fluid—structure coupling and the effect of support stiffness, are investigated. Using Galerkin’s method, the equation of motion is discretized… read more here.
Keywords: system; string system; non linear; drill string ... See more keywords