Results 61 to 70 of about 285,909 (143)

Key Technology for Drilling Speed Improvement of High Abrasive Formation in Aktobe

Shiyou jixie, 2018
The Zahnanor and North Tluwa oil field in the Aktobe area are rich in oil and gas resources. The main oil and gas reservoirs are located in the Carboniferous strata below the Permian.
Wang Gang, Li Wanjun, Liu Xin, Ye Dongqing, Tian Dishou, Wang Yanfeng, Fan Honghai   +6 more
doaj  

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  

Evaluation of the Efficiency of Impact Mechanisms on the Example of Hydraulic Rotary Hammer Drills

Management Systems in Production Engineering
The efficiency of energy transfer in impact mechanisms, often referred to as impact engines, is of key importance for users of these devices, including hydraulic rotary hammer drills.
Krauze Krzysztof
doaj   +1 more source

STRUCTURAL DESIGN AND MOTION SIMULATION RESEARCH ON A NEW TYPE COMPOSITE ROTARY PERCUSSION DRILLING TOOL

Jixie qiangdu, 2017
A new type composite rotary percussion drilling tool was designed by studying the conversion mechanism of rotary to reciprocating motion. High-frequency axial impact and vibration was generated by an impact and energy transfer mechanism consisting of a ...
ZHANG HaiPing, LIU XiaoDan, WANG JiaChang, SUN MingGuang   +3 more
doaj  

Improvement of generalization performance of diagnostic system for drill bit abnormality in rotary percussion drilling with grad-CAM

Discover Applied Sciences
Rotary percussion drills, specifically top hammer types, are essential in resource extraction and exploration. These drills frequently suffer damage at the drill bit, necessitating effective decision-making to address issues.
Yuna Nakazawa, Natsuo Okada, Jo Sasaki, Lesego Senjoba, Yoko Ohtomo, Youhei Kawamura   +5 more
doaj   +1 more source

Acceleration Mechanism and Efficiency of High-Speed Rotary Percussion Drilling and Grinding of Cement Plug

Shiyou jixie
At the time of rotary percussion drilling and grinding of cement plug at high speed,the combination of high-speed rotary cutting and high-frequency axial percussion can significantly improve the efficiency of drilling and grinding cement plug,but the ...
Liu Wang, Guo Zhaohui, Jiang Zixuan, Guan Feng, Tian Haifeng, Li Zirui, Xia Yusheng   +6 more
doaj  

Application, advantages and limitations of high-density gravimetric surveys compared with three-dimensional geological modelling in dolomite stability investigations

Journal of the South African Institution of Civil Engineers, 2011
The article discusses the nature of the gravimetric survey as applied and used in dolomite stability investigations on areas underlain by the Chuniespoort Group in South Africa.
I J Breytenbach, P J A Bosch
doaj  

High aspect ratio diamond nanosecond laser machining. [PDF]

Appl Phys A Mater Sci Process, 2023
Golota NC, Preiss D, Fredin ZP, Patil P, Banks DP, Bahri S, Griffin RG, Gershenfeld N.   +7 more
europepmc   +1 more source

Optimal drilling parameters during rotary percussion drilling and simultaneous casing of borehole [PDF]

, 2020
Udarno rotacijska metoda vrtanja se pogosto uporablja za vrtanje plitvejših vrtin, ki se v največji meri uporabljajo kot inklinometri, piezometri, vodnjaki ali geosonde, njihova globina pa običajno ne presega 250 m.
Bajuk, Simon
core  

Rotary - percussion drilling method - historical review and current possibilities of application

Tyt. z nagłówka.Bibliogr. s. [323].'Faster, deeper, cheaper' - it is not just a slogan, it is a motto of every oil company. The first application of rotary-percussion drilling method in drilling oil wells took place in early 60's of the XX century in the
Sapińska-Śliwa, Aneta.
core