Results 101 to 110 of about 164 (152)
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Development of a rotary-percussive drilling mechanism (RPDM)
2012 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2012A project named Chang'e is currently aiming to accomplish acquiring the lunar soil through automated robotic device. Therefore, many engineers are attempting to develop a kind of prototype of lunar soil coring for the mission. This paper presents a Rotary-percussive Drilling Mechanism (RPDM) which is a novel scheme for driving unit in the deep lunar ...
Qiquan Quan +6 more
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A Rotary-Percussive Ultrasonic Drill for planetary rock sampling
2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2016Conventional ultrasonic drills can drill into rocks using high frequency axial vibration, which feature lower power and lower preload force, thus they could become a very attractive solution for future deep-space exploration. However, drill cuttings cannot be removed effectively with the increase of drilling depth by conventional ultrasonic drills that
Yinchao Wang +6 more
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Exploration and determination of the principles of rotary-percussive underground slimhole drilling
International Journal of Mining Science and Technology, 2014 Abstract A possibility of the efficient use of rotary percussive drilling to provide drilling smaller diameter holes (40–70 mm) both in mining and prospecting is disclosed herein. A new construction designed for the nipple thread connection is described.
Anastasija Shadrina
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A bit–rock interaction model for rotary–percussive drilling
International Journal of Rock Mechanics and Minings Sciences, 2011Abstract Rotary–percussive drilling is considered a promising approach to improve drilling performance in hard rock formations. Different from percussive drilling, it is a hybrid form of drilling, since the weight-on-bit and the angular velocity are still acting as in conventional rotary drilling.
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Parameter Optimization and Application Evaluation of Rotary Percussion Drilling
International Petroleum Technology Conference, 2021Abstract Rotary percussion drilling has gained increasing interest in the oil and gas industries because of its high drilling efficiency and good deviation control [1, 2]. In this work, a rotary percussion-based drilling tool is successfully deployed in a test well, and demonstrates a convincing enhancement of the rate of penetration ...
Bodong Li +5 more
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Embedded Drilling System Using Rotary-Percussion Drilling
2018The drilling technology is widely used in various fields. This technology has been developed explosively by large companies. However, most of the conventional drilling systems require large equipment such as rig and mud systems. This makes it difficult for drilling in polar or space environments where large equipment is hard to enter or carry. To solve
Jongheon Kim, Jinkwang Kim, Hyun Myung
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Characterization of rotary-percussion drilling as a seismic-while-drilling source
Journal of Applied Geophysics, 2018Abstract This paper focuses on an evaluation of rotary-percussion drilling (RPD) as a seismic source . Two field experiments were conducted to characterize seismic sources from different rocks with different strengths, i.e. weak shale and hard arkose. Characterization of RPD sources consist of spectral analysis and mean power measurements, along
Yingjian Xiao +2 more
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Optimization of percussive mechanism in rotary-percussion drill for lunar exploration
2013 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2013Rotary-percussive Drill (RPD) has been widely employed in extraterrestrial exploration as a main drilling and sampling device. Percussive mechanism, as an inevitable part of RPD, is commonly utilized to exert percussion onto drill stem to improve drilling performance once hard rock is encountered.
Degang Jie +6 more
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Research on a Rotary-Percussive Coring Drill for Lunar Exploration
Applied Mechanics and Materials, 2012China is launching the Chang'e project to send automated machine for acquiring the lunar soil and returning to the earth. Thus, we are trying to develop a kind of effective mechanism for the exploration mission of lunar soil coring. This paper presents a rotary-percussive coring drill which is a novel scheme for the deep surface soil acquirement.
S. Li +5 more
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Weak zone characterization using full drilling analysis of rotary-percussive instrumented drilling
International Journal of Rock Mechanics and Minings Sciences, 2016 • We detect three kinds of weak zones of rock mass in the rotary-percussive instrumented drilling process.
Z Q Yue
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