Results 71 to 80 of about 177 (131)

REDUCTION OF COST AND TIME CONSUMPTION IN WELL-CONSTRUCTION

Rudarsko-geološko-naftni Zbornik, 1998
A Contractor usually utilizes the available drilling equipment when constructing just one single well. Drilling cost and time consumption in constructing the well MB-1, using the percussion method, and the well MB-2, using the conventional rotary ...
Mladen Zelenika , Božo Soldo
doaj  

Pump‐Probe Imaging of Ultrafast Laser Percussion Drilling of Glass in Single Pulse, MHz‐ and GHz‐Burst Regimes

Advanced Materials Interfaces
A pump‐probe shadowgraphy study of femtosecond laser percussion drilling on glass samples is reported applying three different operating regimes, which are the standard repetitive single pulse, the MHz‐ and the GHz‐burst modes.
Pierre Balage, Théo Guilberteau, Manon Lafargue, Guillaume Bonamis, Clemens Hönninger, John Lopez, Inka Manek‐Hönninger   +6 more
doaj   +1 more source

TRIDENT Ice Mining Drill for Lunar Volatile Prospecting for PRIME-1 and VIPER Missions

The Planetary Science Journal
The Regolith and Ice Drill for Exploration of New Terrains (TRIDENT) is a 1 m class drill developed for capturing regolith and ice during the Volatiles Investigating Polar Exploration Rover (VIPER) and the Polar Resources Ice Mining Experiment (PRIME-1 ...
Kris Zacny, Philip Chu, Vincent Vendiola, Gale Paulsen, Paul Creekmore, Samuel Goldman, Jameil Bailey, Philip Ng, Carter Fortuin, Jaqueline Stamboltsian, Alex Wang, Anchal Jain, Paul Chow, Emily Seto, Nicholas Bottomley, Robert Huddleston, Ezra Bailey-Kelly, Raymond Zheng, Aaron Norlinger, Isabel King, Zach Mank, Jack Wilson, Jake Fishman, Helen Xu, Dean Bergman, Erik Mumm, Kiel Davis, Jason Beck, Stella Dearing, Mark Hill, Jackie Quinn, Amy Eichenbaum, Janine Captain, Julie Kleinhenz, Anthony Colaprete, Rick Elphic, Kimberly Ennico-Smith, Darlene S. S. Lim, Zara Mirmalek, David Lees, Valentin T. Bickel, Ariel N. Deutsch, Nicholas C. Schmerr, Kevin Lewis, Benjamin Fernando, Kathryn Gansler   +45 more
doaj   +1 more source

Development and test evaluation of PDC impact resistance testing device

Jin'gangshi yu moliao moju gongcheng, 2016
According to the theory of percussion drilling fluctuation,the actual stress of polycrystalline diamond compact(PDC) working under the well was simulated. A new PDC impact resistant device is designed with new method.
ZHANG Tao, LU Canhua, BAO Yuhe, DOU Ming, LIU Juntao   +4 more
doaj  

Composite Percussive Rock Breaking Mechanism in Deep Strata of Xihu Block,East China Sea Basin

Shiyou jixie
The improvement of rate of penetration(ROP)in deep,high confining pressure formations is closely related to the rock breaking method.In the Xihu block of the East China Sea Basin,the percussive rock breaking method is mainly used to improve ROP.In this ...
Li Jiwei
doaj  

Modelling laser percussion drilling

, 2004
openaire   +1 more source

Models for Solidification and Splashing in Laser Percussion Drilling

SIAM Journal on Applied Mathematics, 2002
Summary: This paper studies systems of partial differential equations modelling laser percussion drilling. The particular phenomenon considered in detail is the ejection of the thin layer of molten material. This thin layer is modelled as an inviscid flow between the fluid surface and fluid/solid interface, both of which are unknown moving boundaries ...
Warren Smith
exaly   +4 more sources

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Oilfield Percussion Drilling

SPE California Regional Meeting, 1961
Abstract Advancements in tools and technology for air drilling have been quite numerous. One of the more publicized tools in recent years has been the air-rotary-percussion drill. This paper is prepared to evaluate the tool performance and to indicate problem areas where the tool may be used to the greatest ...
F.W. Smith, Wink Kopczynski
openaire   +1 more source

Experimental investigation on drilling efficiency of a percussive ultrasonic drill

2017 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2017
Drilling is an important method to obtain samples on a minor planet for deep-space exploration. Conventional drilling devices driven by electromagnetic motors usually need large weight on bit to fracture hard rocks. It is a great challenge for conventional drilling devices to drill on a minor planet which has a weak gravitational field.
Deen Bai, Zhijun Zhao, Yubao Cao, Qiquan Quan, He Li 0005, Zongquan Deng   +5 more
openaire   +1 more source

Optimization of percussive mechanism in rotary-percussion drill for lunar exploration

2013 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2013
Rotary-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, Peng Li, Qiquan Quan, Shengyuan Jiang, Xuyan Hou, Dewei Tang, Zongquan Deng   +6 more
openaire   +1 more source