Chaotic Vibration Analysis of the Bottom Rotating Drill String

Xue, Qilong; Wang, Ruihe; Sun, Fang Hong; Huang, Zhiyuan

doi:10.1155/2014/429164

Cited by 13 publications

(6 citation statements)

References 22 publications

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“…As shown in Figure 18, due to constraints at points A, B, and C, stifness of the drill pipe, and axial tension, the drill pipe will generate lateral force on the borehole wall [27]. Te formula for calculating this lateral force is as follows:…”

Section: Stifness Efectmentioning

confidence: 99%

Study on Dynamic Behavior of a Titanium Alloy Drill Pipe in Complex Wells

Guo

Zhang

et al. 2023

Shock and Vibration

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Traditional steel drill pipes can no longer meet the requirements of complex wells with ultradeep, ultrahigh pressure, and long horizontal section; hence, titanium alloy drill pipes are an ideal substitute. This paper explores how titanium drill pipes behave in complex wells. The extrusion and tensile test of titanium alloy pipe was first established. Then, based on the experimental data, the downhole mechanical behavior of a titanium alloy drill pipe was studied from the buckling, contact force, and operating friction with an actual complex well. Meanwhile, the mechanism of friction reduction is analyzed and discussed. The research achievements indicate that the strength of a titanium alloy drill pipe is equal to that of a steel pipe and has good plastic deformation capacity. The titanium alloy drill pipe is more prone to buckling during operation, but it has a smaller contact force, which can effectively reduce the operation friction. It was found that the influent of buckling on slide force was much less than of the gravity and stiffness by mechanism analysis. The research achievements can provide specific theoretical and practical references for the revelation of the mechanical behavior and functional performance of titanium alloy drill pipe in the field operation.

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Section: Stifness Efectmentioning

confidence: 99%

Study on Dynamic Behavior of a Titanium Alloy Drill Pipe in Complex Wells

Guo

Zhang

et al. 2023

Shock and Vibration

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“…The contribution of these features to its maintaining popularity is quite big. For this reason, the use of fluxgate sensors in different application areas is increasing day by day [12][13][14][15][16][17]. Finding an optimal design of fluxgate sensor suitable for nondestructive testing (NDT) and other small area applications requiring local field information were extensively investigated in our previous work [18].…”

Section: Local Magnetic Field Distribution Through the Magnetic Cardmentioning

confidence: 99%

Design of Fluxgate Sensors for Different Applications from Geology to Medicine

Topal

Can

Çelik

et al. 2018

J Supercond Nov Magn

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In this study, we have shown that fluxgate sensors can be used for different application areas. Alternative sensor configurations have been developed for three different application areas. These are mainly rod-and ring-type fluxgate sensors. In the first study, a measurement system with the rod-type fluxgate sensor has been developed in order to monitor the local magnetic field distributions on a magnetic tape (e.g., credit card). With this system, the magnetic recording data on the credit card were measured and imaged successfully. The second and the third application areas, which are monitoring the influence of solar storms on the earth field and heartbeat analysis of mankind, were carried out by using a ring-core fluxgate sensor geometry.

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“…The principle of deep-hole drilling dynamics is similar to that of bottom-hole assembly (BHA) drill strings dynamics [14][15][16][17]. At present, a lot of research work has been done on torsional and lateral vibration in BHA drill strings dynamics.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of BTA Deep-Hole Drilling Shaft System

Ma¹,

Shen²

2018

dtetr

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Abstract. Numerical investigation was conducted into dynamics of deep-hole drilling shaft system. The rotating drilling shaft was modeled as a Rayleigh beam conveying the fluid and subjected to torque, compressive axial force and support constraints. From the viewpoint of rotor dynamics and fluid-structure interaction, the governing equation of the drilling shaft system for lateral vibration was obtained taking into account of the fluid-structure interaction, the rotational inertia, the gyroscopic effect, the effect of the motion constraints and frictional damping generated by the surrounding fluid. The influence of the cutting fluid flow velocity, rotational angular velocity, torque, compressive axial force, and the support constraints on natural frequency and stability of the drilling shaft system was examined. It has been found that the cutting fluid flow velocity, compressive axial force and torque decreases natural frequencies of the drilling shaft system, whereas rotational angular velocity and support constraints can improve the stability of the drilling shaft system.

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Chaotic Vibration Analysis of the Bottom Rotating Drill String

Cited by 13 publications

References 22 publications

Study on Dynamic Behavior of a Titanium Alloy Drill Pipe in Complex Wells

Study on Dynamic Behavior of a Titanium Alloy Drill Pipe in Complex Wells

Design of Fluxgate Sensors for Different Applications from Geology to Medicine

Dynamic Analysis of BTA Deep-Hole Drilling Shaft System

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