Results 41 to 50 of about 425 (156)
Development of Similarity Theory-based Horizontal Well Drill String Test Apparatus
Shiyou jixie, 2016 In order to conduct research on dynamic properties of drill string in the horizontal well,a horizontal well drill string test apparatus is developed based on parameter correspondence between test model and site prototype.The parameter correspondence is ...
Ren Fushen +3 more
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Chaotic Vibration Analysis of the Bottom Rotating Drill String
Shock and Vibration, 2014 Drill string vibration is a widely studied topic. This paper developed a real-time measurement system near the drilling bit and extracted the lateral vibration, longitudinal vibration time series of bottom rotating drill string.
Qilong Xue +3 more
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Modeling Friction Performance of Drill String Torsional Oscillation Using Dynamic Friction Model
Shock and Vibration, 2017 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 ...
Xingming Wang +3 more
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Study of Radial Vibration Impact on Friction and Torque of Rotary Drill String
Shock and Vibration, 2020 During extended-reach well drilling, the torque of a rotary drill string is too large in the horizontal section, which results in the failure of the drill string.
Zifeng Li +3 more
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Advances in Mechanical Engineering, 2019 Stick–slip vibration is common in the oil well drilling process and is detrimental to down-hole equipment and drilling efficiency. In recent years, a new type of drilling technology, torsional impact drilling, has been developed to mitigate the stick ...
Liping Tang, Wei He, Xiaohua Zhu
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Xibei Gongye Daxue Xuebao, 2019 Exploration of oil or gas wells is usually carried out by using drilling system. When the kilometers of drilling system is externally disturbed, the drilling system is prone to undesired stick-slip vibration of the drill-string.
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Study on lateral vibration characteristics of BHA with double-span drill collar
Advances in Mechanical EngineeringThe severe vibration of BHA directly affect the drilling efficiency, borehole trajectory, and wellbore quality. Therefore, it is crucial for developing dynamic mechanics of drill string system by studying the mechanical behavior of BHA.
Zuwen Tao +7 more
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Vibration Damage Analysis of Bottom Hole Assembly Under Axial Impact Based on Dynamic Analysis
Applied SciencesImpact 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 +3 more
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EnergiesDrilling oil and gas wells is a complex process that requires a combination of several parameters to dig into the ground. Inappropriate drilling parameter settings and reaction forces can lead to unwanted vibrations, which can negatively impact the drill
Mohamed Zinelabidine Doghmane
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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 +4 more
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