Results 11 to 20 of about 267,136 (314)

Theoretical analysis and design of hydro-hammer with a jet actuator: An engineering application to improve the penetration rate of directional well drilling in hard rock formations. [PDF]

open access: yesPLoS ONE, 2018
Rapid horizontal directional well drilling in hard or fractured formations requires efficient drilling technology. The penetration rate of conventional hard rock drilling technology in horizontal directional well excavations is relatively low, resulting ...
Jiang-Fu He   +3 more
doaj   +1 more source

Research and practice of high speed spiral compound drilling technology in complex weak coal seam

open access: yesMeikuang Anquan, 2022
In view of the difficult problems of drilling and discharging slag and low hole forming rate in complex weak coal seam of Wangpo Coal Mine, the high speed spiral compound drilling technology is studied, and the performance characteristics of ZDY6000LR ...
LI Yingxi
doaj   +1 more source

The rock breaking capability analyses of sonic drilling

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
Sonic drilling technology uses the longitudinal vibration of a drill string to realize fast and effective drilling. By setting the top and bottom boundary conditions of the drill string during drilling, a dynamic model of flexible sonic string percussive
Yonghang Qian   +4 more
doaj   +1 more source

Optimization of drilling parameters based on Copula function method for the Chepai area [PDF]

open access: yesE3S Web of Conferences, 2023
In areas with complex stratigraphic lithology, the relationship between the penetration rate and drilling parameters should be fully considered to optimize the drilling process and improve drilling efficiency.
Liu Yingbiao   +5 more
doaj   +1 more source

Analysis of drilling force characteristics and trepanning tool wear during GFRP low frequency axial vibration drilling hole

open access: yesJin'gangshi yu moliao moju gongcheng, 2023
The processing damages such as delamination and tearing were easily produced during the drilling of the sleeve holes of GFRP, which were directly related to the axial drilling force. In order to improve the quality of GFRP hole-making, a new diamond thin-
Xianglong DONG   +6 more
doaj   +1 more source

Fuzzy Logic Controller Design for Intelligent Drilling System [PDF]

open access: yes, 2016
An intelligent drilling system can be commercially very profitable in terms of reduction in crude material and labor involvement. The use of fuzzy logic based controller in the intelligent cutting and drilling operations has become a popular practice in ...
Ahamed, Nizam Uddin   +8 more
core   +1 more source

Optimization of Drilling Process Parameters on Die Steel (H13) using Carbide Coated Drill by Design of Experiment Concept [PDF]

open access: yes, 2016
This experimental work presents the optimization of process parameter of surface roughness with using coated carbide drill on H13 steel. Taguchi design of experiments was implemented for executing the process parameter of Drilling process on H13 steel ...
Ganesh, J. (J)   +3 more
core   +1 more source

THE INFLUENCE OF DRILLING FLUID ON THE CORROSION RATE OF TUBULAR MATERIAL [PDF]

open access: yesRomanian Journal of Petroleum & Gas Technology, 2020
Corrosion is a chemical, biochemical or electrochemical process of degradation on the surface of metals in contact with aggressive agents. Drill pipes are constantly in contact with the drilling fluid which has a corrosive action on its components ...
Gabriela Ioana Stan   +2 more
doaj  

A Data-Driven Approach to Predict the ROP of Deep Wells in Fukang Sag

open access: yesApplied Sciences, 2023
In the deep well drilling process in the Fukang Depression of the Eastern Junggar Basin, rock fracturing issues and low rate of penetration (ROP) have posed significant challenges to drilling efficiency.
Yingjie Wang   +5 more
doaj   +1 more source

Improving drilling performance through optimizing controllable drilling parameters

open access: yesJournal of Petroleum Exploration and Production Technology, 2021
The prediction of the drilling rate of penetration (ROP) is one of the key aspects of drilling optimization due to its significant role in reducing expensive drilling costs.
Ahmed Bani Mustafa   +3 more
doaj   +1 more source

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