Results 11 to 20 of about 5,119,526 (356)
Machines, 2023 The paper is dedicated to the enhancement of Polycrystalline Diamond Bits (PDC) designed for oil and gas industry. A novel diamond-reinforced composite was applied for cutting inserts, with the addition of 4 wt% chromium diboride to the WC-Co matrix. The
Boranbay Ratov +9 more
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Applied Sciences, 2023 Hole cleaning for the majority of vertical and directional drilling wells continues to be a substantial difficulty despite improvements in drilling fluids, equipment, field techniques, and academic and industrial research.
Mohammed Murif Al-Rubaii محمد مريف الربعي +2 more
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Adaptive control method for drilling robot based on coal and rock drillability
Gong-kuang zidonghua, 2023 Due to the complex geological and mechanical environment of coal-bearing strata, the feed resistance of the drilling rig feed system and the load torque of the rotary system are complex and diverse.
LI Wangnian +4 more
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Directional drilling technologies equipment and application for hard rock in underground coal mines
Meikuang Anquan, 2021 According to the problems existing in directional drilling of hard rock in coal mines, such as low drilling efficiency, easy bearing pressure in deep hole drilling and easy damage of drilling tools in hole, based on the analysis of the causes of the ...
DOU Xuqian, WANG Li
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An experimental evaluation method of drilling fluid lost control efficiency considering loss types
Frontiers in Physics, 2023 There are serious drilling fluid loss problems in fractured reservoirs during drilling and completion. Indoor evaluation of the drilling fluid lost control effect is an important basis for on-site plugging formula design, but there are some problems in ...
Jingyi Zhang +7 more
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Energy Efficiency Improvements in Dry Drilling with Optimised Diamond-Like Carbon Coating [PDF]
, 2008 We demonstrate enhancements of performance and energy efficiency of cutting tools by deposition of diamond-like carbon (DLC) coatings on machine parts. DLC was deposited on steel drill bits, using plasma enhanced chemical vapour deposition (PECVD) with ...
A.W. Anson +16 more
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International journal of mathematical, engineering and management sciences, 2020 Rate of Penetration (ROP) is one of the important factors influencing the drilling efficiency. Since cost recovery is an important bottom line in the drilling industry, optimizing ROP is essential to minimize the drilling operational cost and capital ...
S. Chandrasekaran, Suresh Kumar
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The rotational motion simulation of AIST small spacecraft prototype based on current values and on a hardware-software stand [PDF]
E3S Web of Conferences, 2023 Improving the quality and volume of drilling is the main condition for advancing the growth of reserves of raw materials of the national economy and industry. Rock-breaking tools are the main and busiest part of drilling equipment.
Khnyryova Ekaterina
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Сomparative analysis of efficiency of use a screw drill on frozen soil
Вестник СибАДИ, 2021 Introduction. Drilling of frozen and permafrost soils is one of the complex and energy-intensive processes of earthworks. Drilling tools used on frozen soils implement the process of drilling the soil by deformation of cutting or crushing action. Current
I. G. Martiuchenko, M. I. Zenin
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INFLUENCE OF DRILLING RIG DESIGN ON WELL DRILLING EFFICIENCY
Sustainable Development of Mountain Territories, 2020 The purpose of research in the extraction of minerals is the development of technologies that will make it possible to drill wells specially designed for the extraction of ores with a length of several kilometers and a diameter of 300 mm to 2 m. The main research method is an experiment, during which drilling of wells by alternative methods under the ...
Vasily ANISCHENKO, Viktor ATRUSHKEVICH
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