Results 131 to 140 of about 643,401 (321)
Дослідження динаміки роботи бурильної колони при буріння свердловини із плавучої установки [PDF]
, 2015 Розглянуто побудову математичної моделі повздовжніх коливань системи «Плавуча бурова установка – компенсатор вертикальних переміщень бурильної колони – бурильна колона – долото» в процесі поглиблення вертикальної свердловини тришарошковим долотом при ...
Слабий, О. О.
core
IceCube: The Cubic Kilometer Neutrino Telescope at the South Pole
, 2004 Search for ultra high-energy neutrino induced reactions, as part of a comprehensive probe of the neutrino sky and also investigation of the particle nature of the dark matter, with unique sensitivity to cold dark matter particles are described.
Fazely, A. R.
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Fluid Mechanics of the Drilling String [PDF]
Journal of Petroleum Technology, 1953 To help field men select the proper nozzle and pump liner size, a pocket calculator has been designed which will predict the performance of the hydraulic system. Although the use of the drilling fluid to control and condition the hole is well known, the present use of high jet velocities has brought purely hydraulic problems to much ...
openaire +1 more source
Journal for Eighteenth-Century Studies, EarlyView.Abstract The final Stuart monarch, Queen Anne, has often been overlooked in studies of visual and material culture, particularly of fashion and dress. This article is the first to undertake a qualitative and quantitative analysis of the wardrobe accounts of Queen Anne, situating her consumption within the context of the eighteenth‐century fashion ...
Sarah A. Bendall
wiley +1 more source
Artificial Organs, EarlyView.Percutaneous femoro‐femoral V‐A ECMO cannulation was associated with more than a two‐fold lower risk of site bleeding and nearly a six‐fold lower risk of infection compared with surgical cut‐down, with no difference in limb ischemia. Absence of distal perfusion catheterization and larger arterial cannula size were additional modifiable ischemia risk ...
Axel Dimberg +3 more
wiley +1 more source
Analysis on the dynamics of flexible drillstring under different drilling parameters
Frontiers in Earth ScienceDuring the operation of the drill string, it displays a degree of flexibility. Simultaneously, its dynamic properties, influenced by complex stress conditions, manifest nonlinearity and uncertainty.
Jifei Cao +8 more
doaj +1 more source
Archaeometry, EarlyView.Abstract Trade between Mesopotamia and the Indus Civilization is studied through the analysis of Early Dynastic III Period (2600–2350 BCE) carnelian beads from the site of Kish, Iraq. Morphological and technological features of the beads are compared with beads from the Indus region.
J. Mark Kenoyer +2 more
wiley +1 more source
Study on Drill String Fatigue Life in Deepwater Drilling
Shiyou jixie, 2016 Dynamic response of the deepwater drilling platform increases alternating loads of the drilling string.As a consequence,the calculation of drill string fatigue life becomes more complicated.By using the numerical simulation method,a method for studying ...
Wang Jiajia, Chen Jianmin
doaj
Енергозатрати у процесі буріння свердловин долотами різних конструкцій [PDF]
, 2009 Проведено теоретичні дослідження пропускної здатності різьбових з’єднань бурильних замків та втрат гідравлічної енергії бурового насоса під час промивання свердловини.
Процюк, В. Р. +2 more
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Application evaluation of TORSION DRILLING string
Journal of Physics: Conference SeriesAbstract The drill string torsion system, represented by Slider and Rocket, has been widely used around the world. It provides a solution with a high performance-price ratio to solve the problem of supporting pressure in sliding drilling.
Zengbao Zhang +3 more
openaire +1 more source