Results 61 to 70 of about 242,341 (155)
Shiyou jixieIn response to the demand for plugging old wells of CO2 gas storage under the carbon peak and carbon neutrality goals， to address the challenges of deploying wireline logging tools to the bottomhole of highly-deviated and complex-structure wells during ...
Ren Xianke +6 more
doaj +3 more sources
Drill String Drag and Torque Test Device Design
Shiyou jixie, 2019 The existing drag and torque theoretical model has many assumptions, leading to a large difference between the calculated value and the true value, which seriously restricts the study of the mechanical behavior of the drill string and the optimization of
吴泽兵 +4 more
doaj
RESEARCH ON FLEXIBLE DRILL STRING VIBRATION INDUCED BY SONIC HARMONIC EXCITATION
, 2015 The undisturbed sampling of the overburden soil is attracting increased attention due to the rapid increases in the construction of large-scale domestic foundations and environmental protection engineering.
Bairu Xia +3 more
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Acoustical properties of drill strings [PDF]
, 1988 The recovery of petrochemical and geothermal resources requires extensive drilling of wells to increasingly greater depths. Real-time collection and telemetry of data about the drilling process while it occurs thousands of feet below the surface is an effective way of improving the efficiency of drilling operations.
openaire +2 more sources
Electric drill-string telemetry
, 2020 We design a numerical algorithm for simulation of low-frequency electric-signal transmission through a drill string. This is represented by a transmission line with varying geometrical and electromagnetic properties versus depth, depending on the ...
M Carcione, Jos E, Flavio Poletto
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Suppression of Drill-String Stick-Slip Vibration
, 2018 We investigate experimentally and numerically suppression of drill-string torsional vibration while drilling by using a sliding mode control. The experiments are conducted on the novel experimental drilling rig developed at the University of Aberdeen [1]
Wiercigroch Marian +2 more
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Fatigue estimation of drill-string and drill-pipe threaded connection subjected to random loadings [PDF]
, 2015 Drill-strings are slender structures used to drill the oil-well in searching for oil and gas. Failures of drill-strings cause the loss of time and money and therefore predicting fatigue damage induced by vibrations is of benefit.
Zheng, Jiahao
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Research on Vibration Reduction and ROP Acceleration for Drilling in KOA Oilfield,Kazakhstan
Shiyou jixie, 2023 The KOA oilfield is located in the eastern margin of the Caspian Basin,Kazakhstan.The shallower Upper Permian of the oilfield is found with severe interbeding between sandstone and mudstone as well as interlayers of mudstone/slate and conglomerate.The ...
Wang Jianning +4 more
doaj
Western String Chamber Orchestra, March 24, 1996
, 2016 Recorded during a live performance at Dalton Center Recital Hall, Western Michigan University, Kalamazoo, Michigan, March 24, 1996, 3:00 p.m., the 445th concert of the School of Music's 1995-1996 season.Western String Chamber Orchestra, Bruce J. Uchimura,
Western String Chamber Orchestra
core
Shiyou jixieDuring the drilling of ultrashort-radius radial horizontal well with flexible drill string， the vertical shift of wellbore trajectory affects the encountering rate of target points.
Liu Xin Huang Zhongwei Wu Xiaoguang Li Gensheng Shi Huaizhong Wang Jiarui Wang Minghao +6 more
doaj +3 more sources