Influence mechanism of the rubbing of drilling pipe for the stability of hole wall [PDF]
, 2016 The hole wall appears because of the gas drainage of the coal seam, the hole wall is divided for the elastic area and plastic area, according to the elastic mechanics and rock mechanics established borehole wall stress model, caused by gas drilling ...
Chen-xu, L. (LUO) +2 more
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New algorithm based active method to eliminate stick-slip vibrations in drill string systems [PDF]
, 2022 Fourat Zribi +3 more
openalex +1 more source
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
doaj
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
doaj +1 more source
Axial Vibration Analysis on Drillstring [PDF]
, 2015 The problem of drill string vibration occurs in drilling operations and it will affect the usage life of drill pipe and drill bits. Three types of vibration, which are axial, lateral and torsional vibrations exist in the drill string.
HOW, KEK JIA
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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
doaj +1 more source
Nanosatellite fabrication and analysis [PDF]
, 2012 The advancements in technologies used in the aerospace industry have allowed universities to experiment with and develop small-scale satellites. Universities are taking advantage of the relatively low development costs of nanosatellite programs to give ...
Harrison, Sam +2 more
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A comprehensive study on vibration control and evaluation of drill string during drilling operation [PDF]
, 2023 Siddiqui Mohammad Saadat +3 more
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Some aspects of operational reliability of the drill string and its components in well construction process [PDF]
, 2013 The paper considers operational efficiency of the well deepening procedure based on the probable drilling performance and the state of drill string components.
Hohol, V. I. +2 more
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Дослідження поздовжніх, крутильних і згинальних коливань бурильної колони [PDF]
, 2013 Розглянуто поздовжні, крутильні і згинальні коливання бурильної колони, що виникають під час поглиблення вибою. Наведено рівняння, які показують можливість застосування віброшвидкості для оцінки міцності та надійності труб колони у разі вібрацій ...
Гоголь, В. І. +2 more
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