Results 91 to 100 of about 9,449 (231)

Vibration Damage Analysis of Bottom Hole Assembly Under Axial Impact Based on Dynamic Analysis

Applied Sciences
Impact Drilling Technology is one of the most effective methods for enhancing the penetration rate and efficiency in hard rock formations. Downhole axial vibration impact tools can provide a stable impact load, but they also increase the complexity of ...
Qilong Xue, Yafeng Li, Jianbo Jia, Lun Zhao   +3 more
doaj   +1 more source

Modelling of Nonlinear Torsional-Flexural Vibrations of Drill Strings

International Journal of Mathematics and Physics, 2015
Nonlinear flexural-torsional vibrations of shallow drill-strings are investigated. The drill-string is represented as an elastic rod rotating at constant angular velocity under the action of the longitudinal compressive force. The nonlinear model of flexural and torsional vibrations of drill-string is constructed on the basis of the theory of finite ...
A.S. Sergaliyev, L.A. Khajiyeva
openaire   +1 more source

Numerical analysis and Experimental Investigation of Lateral vibration on Drill String under Axial Load Constrained with Horizontal Pipe

, 2020
Baojin Wang, Zhongyang Wang, Anhe Zhu, Hong‐Da Wang, Fushen Ren   +4 more
openalex   +1 more source

Dynamic characteristics and safety analysis of drill strings in deepwater open hole drilling

Energy Exploration & Exploitation
Open hole drilling is expected to become the mainstream technology for ultra-deepwater applications. During ultra-deepwater drilling, the drill string is influenced by oceanic wind, waves, and currents, resulting in highly complex mechanical behavior ...
Fangfei Huang, Jin Yang, Shujie Liu, Yu Song, Bin Li   +4 more
doaj   +1 more source

Study on Active Control of Stick-slip Vibration of Drill String System [PDF]

, 2023
Jie Luo
openalex   +1 more source

Determination of the characteristics of drill string vibrations during the drilling process

Technology audit and production reserves
The object of research is vibration processes of a certain origin in the drill string with typical design deviations depending on the mode parameters of drilling. A drill string is an oscillating system with an infinite number of degrees of freedom of a multifactor system.
Oleksandr Titlov, Viktor Svitlytskyi, Sergii Iagodovskyi   +2 more
openaire   +1 more source

Research on Stick-slip Vibration Level Estimation of Drillstring Based on SVM

Shiyou jixie, 2019
To evaluate the severity of stick-slip vibration of drill string, a risk assessment method based on factor analysis (FA) and support vector machine (SVM) is proposed.
Chen Chong, Zhang Shimin, Peng He, Cui Can, Liu Yang   +4 more
doaj  

Feasibility of decreasing pipe sticking probability using nanoparticles [PDF]

, 2009
U članku je prikazana nova metoda za sprečavanje ili smanjivanje mogućnosti prihvata cijevi u bušotini tijekom izrade naftnih i plinskih bušotina. Ova metoda, primjenjiva na vertikalne i koso umjerene bušotine, uključuje nanočestice u sastavu isplake za ...
Abouzar Mirzaei Paiaman, Bandar Duraya Al-Anazi   +1 more
core   +1 more source

Спектр поздовжніх коливань бурильної колони [PDF]

, 2014
Запропоновано математичну модель параметричних коливань бурильної вежі з урахуванням всіх її елементів, а також залежність процесів буріння від параметрів елементів механічної системи.
Векерик, В. І., Левчук, К. Г., Мойсишин, В. М.   +2 more
core  

Wear resistance of some elements of the drill string during drilling [PDF]

, 2013
The article is concerned with questions of wearing capacity of some elements of the drill string, including the abrasive drilling of hard-alloy insert rolling cutter drilling bits.
Gogol, V. I., Ogorodnikov, P. I., Svitlitskyy, V. M.   +2 more
core