Measurement and simulation of nonlinear drillstring stick–slip and whirling vibrations

Zhang, He; Di, Qinfeng; Ning, Li; Wang, Wenchang; Chen, Feng

doi:10.1016/j.ijnonlinmec.2020.103528

Cited by 21 publications

(5 citation statements)

References 46 publications

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“…The equations ( 17), (18), and ( 19) are substituted into (16), and the simplified dynamic equations of the drill string unit are obtained as follows: In Equations ( 20), e K 0 is linear stiffness matrix of drill string element, e N K is large displacement stiffness matrix of element, e K  is geometric stiffness matrix of element, e G K is dynamic clearance element stiffness matrix of element, e F is equivalent node force vector, e G R is friction and resistance moments.…”

Section: Dynamic Modelmentioning

confidence: 99%

“…Zhu [15] Based on the finite element model considering the axial, transverse and torsional vibration, this paper discusses the reasons for the great difference in the vibration characteristics of drill string system by changing the well structure and bottom hole assembly. Zhang and Di [16] compared the effects of three modes of drill string vibration, namely longitudinal, transverse and torsional vibration induced drill string skipping, disturbance, stick-slip and whirl, on drill string fatigue. Tengesdal N. K. [17] based on the Lagrangian method, a dynamic model of drill string considering lateral bending, longitudinal motion and torsional deformation is presented.…”

Section: Introductionmentioning

confidence: 99%

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Buckling and dynamic analysis of drill string system in horizontal wells

Wu,

Zhang,

Yuan

et al. 2024

Nonlinear Dyn

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Compared with vertical wells and deviated vertical wells, the dynamic characteristics of the drill string in horizontal wells are more complicated and more prone to failure because of the drag-pressure effect under gravity. Most researchers only consider the movement of some drill strings at a certain depth and do not analyze the rotary drilling process of the whole drill string. When most researchers do drill string simulation research, the drill string system diameter of the simulation model is consistent, and the actual drill string assembly is not considered. Based on the finite element method and the dynamic equation of the drill string, the buckling and dynamic behavior of the drill string in the borehole is investigated, and the drilling simulation model of the drill string system in a horizontal well is established by considering the factors of curved hole trajectory and nonlinear impact contact between the drill string and wellbore.The buckling and dynamic characteristics of the drill string in horizontal wells are analyzed by simulating the whole drilling process, the effect of rotating speed and hook load on the buckling characteristics of the drill string, and the effect of hook load on the whole dynamic characteristics of drill string system are analyzed. The results show that in the drilling process, the buckling deformation of the drill string near the wellhead presents a trend of"Sinusoidal bucklinghelical buckling-sinusoidal buckling," the "sinusoidal buckling-helical buckling "appears near the oblique section.When the hook load applied at the end of the drill string is greater than the critical value, the drill string will get stuck during drilling. When it is less than the critical value, the greater the value of the hook load, the more stable the axial feed and lateral vibration of the drill string, and the smaller the contact force between the drill string and the wellbore.With the increase in rotating speed, the vibration period of the drill string decreases, and the amplitude of the vibration increases. With the increase of drill string drilling depth, the buckling deformation of the drill string can be reduced by reducing the value of the hook load. The conclusion is that the research results can be helpful for drill string design and structural optimization.

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Section: Dynamic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Buckling and dynamic analysis of drill string system in horizontal wells

Wu,

Zhang,

Yuan

et al. 2024

Nonlinear Dyn

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“…These vibrational patterns encapsulate significant drilling condition data, pivotal for mitigating drilling incidents, fine-tuning drilling parameters, and enhancing drilling velocity [4,5]. At present, there are mature measurement-while-drilling systems (MWD, LWD) used in drilling operations to measure the vibration of drill strings [6,7], as well as strain gauges [8], high-speed cameras [9], surface measurement and deep learning [10,11], dynamic model optimization [12,13], and other methods that have achieved good results in measuring vibration in the simulated Appl. Sci.…”

Section: Introductionmentioning

confidence: 99%

Research on Hybrid Vibration Sensor for Measuring Downhole Drilling Tool Vibrational Frequencies

Liu,

Pan,

et al. 2024

Applied Sciences

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The vibration parameters during drilling play a critical role in enhancing drilling speed and ensuring safety. However, traditional downhole vibration sensors face limitations in their power supply methods, hindering widespread adoption. To address this challenge, our research introduces a novel solution: a hybrid downhole vibration sensor (HDV-TENG) utilizing triboelectric nanogenerators. This sensor not only enables the measurement of low- to medium–high-frequency vibrations using self-power but also serves to energize other downhole devices. We utilized a self-constructed vibration simulator to replicate downhole drilling tool vibrations and conducted a comprehensive series of sensor tests. The test results indicate that the frequency measurement bandwidth of the HDV-TENG spans from 0 to 200 kHz. Especially, the measurement errors for vibrations within the low-frequency range of 0 to 10 Hz and the high-frequency range of 10 to 200 k Hz are less than 5% and 8%, respectively. Additionally, the experimental findings regarding load matching demonstrate that the HDV-TENG achieves an output power level in the milliwatt range, representing a significant improvement over the output power of traditional triboelectric nanogenerators. Unlike traditional downhole vibration measurement sensors, HDV-TENG operates without requiring any external power supply, thereby conserving downhole space and significantly enhancing drilling efficiency. Furthermore, HDV-TENG not only offers a broad measurement range but also amplifies output power through the synergy of a triboelectric nanogenerator (TENG), piezoelectric nanogenerator (PENG), and electromagnetic power generator (EMG). This capability enables its utilization as an emergency power source for other micropower equipment downhole. The introduction of HDV-TENG also holds considerable implications for the development of self-powered underground sensors with high-frequency measurement capabilities.

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“…Therefore, restraining the stick-slip vibration of the drilling system is a major problem in the current drilling engineering. At present, domestic and foreign scholars' research on stick-slip vibration mainly includes three aspects: nonlinear dynamic analysis when stick-slip vibration occurs during drilling, the establishment and solution of the mathematical model of stick-slip vibration, and the design of a soft torque controller to suppress stick-slip vibration [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Drill Bit Stick-Slip Vibration Experiment Research and Analysis of Influencing Factors

Chen

et al. 2022

Preprint

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Stick-slip vibration of the bit in ultra-deep wells will seriously affect drilling potency, increase extra costs, and even cause drilling accidents. The study of the inner mechanism and external influencing factors of stick-slip vibration is of nice significance to the analysis on the suppression of stick-slip vibration. During this paper, Firstly, the interaction between the bit and rock stratum is analyzed through theoretical analysis. Based on the principle of J. Boussinesq elastic theory solution and Coulomb-Navier criterion, the damage process of the rock and the critical conditions for the incidence of stick-slip vibration of the bit were analyzed. Next, an analysis of the axial force variation of the drill column was carried out based on the establishment of an equivalent axial force variation model of the drill column torque transmission system, and the placement most strongly affected by the stick-slip vibration was located. Then, from the perspective of energy transformation of stick-slip vibration, it is analyzed that the undamped state of the bit at the instant of rock breaking is an important factor leading to the incidence of stick-slip vibration. Finally, it is verified through semi-physical experiments that adding damping to the bit at the instant of rock breaking can directly and effectively suppress the incidence of stick-slip vibration.

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Measurement and simulation of nonlinear drillstring stick–slip and whirling vibrations

Cited by 21 publications

References 46 publications

Buckling and dynamic analysis of drill string system in horizontal wells

Buckling and dynamic analysis of drill string system in horizontal wells

Research on Hybrid Vibration Sensor for Measuring Downhole Drilling Tool Vibrational Frequencies

Drill Bit Stick-Slip Vibration Experiment Research and Analysis of Influencing Factors

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