Full and half-wavelength ultrasonic percussive drills [PDF]
, 2018 Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers ...
Harkness, Patrick +2 more
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Energies, 2023 The exploration and development of new hydrocarbon deposits face increasing challenges, primarily driven by the shift away from hydrocarbons towards renewable energy sources like shallow geothermal deposits, wind farms, and photovoltaics.
Przemyslaw Toczek +3 more
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Determination of the suitable drilling operating parameters in different geological formations El-Sharara Oil Field (South-Western Libya) [PDF]
, 2018 Purpose. The objective of this study is to determine the best operating conditions for the most notable drilling parameters (i.e. weight on bit (WOB), rotary drilling speed (RPM), and characteristics of drilling fluid) using field data obtained from El-
Abdellah, W, Boghdady, G, Sayed, M
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Organic-rich shale in Lianggaoshan Formation: study on macroscopic and microscopic mechanical properties and mechanism of influencing factors [PDF]
Oil ShaleThis study investigates the mechanical properties of organic-rich shale from the Lianggaoshan Formation using uniaxial and triaxial tests, nanoindentation, and atomic force microscopy. Key parameters such as elastic modulus and hardness are analyzed with
Yangbing Li +7 more
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How to recognise a kick : A cognitive task analysis of drillers’ situation awareness during well operations [PDF]
, 2016 Acknowledgements This article is based on a doctoral research project of the first author which was sponsored by an international drilling rig operator.
Cleland, J., Flin, R., Roberts, R.
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An experimental study on the CO2/sand dry-frac process
Natural Gas Industry B, 2014 The CO2/sand dry-frac process is a waterless fracturing technology in which CO2 instead of water is used as fracturing fluid. The application of the technology abroad (in the USA and Canada) shows that it works well in stimulating low-pressure, low ...
Song Zhenyun +8 more
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Improvement of hole drilling technology for ore drawing intensification [PDF]
, 2018 Purpose. The improvement of hole drilling for increasing the mineral recovery ratio by ore drawing improvement through blasting. Methods. The drilling parameters were examined for rock dumps.
Gaponenko, I +3 more
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Drilling Burr Minimization by Changing Drill Geometry [PDF]
Materials, 2020 This article presents an attempt to solve the problem of the formation of burrs and drilling caps in the process of drilling in difficult-to-cut materials, specifically in the titanium alloy Ti-6Al-4V. In order to eliminate these phenomena, a chamfer of specific length and angle was made on FANAR drill’s margin.
Emilia Franczyk +2 more
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Zuanjingye yu wanjingyeThe exploration and development of deep coalbed methane have opened up a new field of developing resources in new formations in the Ordos Basin, ensuring the steady growth of the oil and gas equivalent of the Changqing oilfield.
Mingming ZHU +6 more
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Magnetic Interference Correction Method for Dynamic Measurement of Steering Head and Its Application
Shiyou jixieDuring the operation of the rotary steering system， the magnetic interference faced by the steering head when performing dynamic measurement tasks mainly comes from two aspects： one is the magnetic influence of the internal current fluctuation of the M30
Zhu Jinsong +6 more
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