Results 41 to 50 of about 133,825 (302)

Application of Gamma Logging While Drilling System in Drilling Along Coal Seam

open access: yesMeikuang Anquan, 2020
This paper introduces the application of gamma logging system while drilling based on wireless electromagnetic wave transmission in controlled drilling of gas pre-drainage borehole along coal seam, and the analytic process includes the composition ...
TIAN Xiaochao, JIANG Bici, JI Fanglin, CHEN Long
doaj   +1 more source

Research on the measurement system of drilling while engineering parameters for intelligent drilling in coal mine [PDF]

open access: yesE3S Web of Conferences, 2020
In order to ensure safe and efficient mining and improve the efficiency of drilling construction, intelligent drilling technology has been studied in China. This technology is another development on the basis of automation.
Jie Lian
doaj   +1 more source

Automated Stratum Interface Detection Using the Optimized Drilling Specific Energy through Self-Adaptive Logistic Function

open access: yesSensors, 2023
The precise detection of stratum interfaces holds significant importance in geological discontinuity recognition and roadway support optimization. In this study, the model for locating rock interfaces through change point detection was proposed, and a ...
Kechen Liu   +6 more
doaj   +1 more source

Novel cable measurement while drilling device used for directional drilling in coal mine

open access: yesGong-kuang zidonghua, 2015
In order to solve problems of short usage time, poor signal stability, high fault ratio and high maintenance cost of existing cable measurement while drilling device for coal mine drilling which was powered by battery in hole, a technology scheme was ...
FANG Jun   +3 more
doaj   +1 more source

Gyroscopes for measurement while drilling [PDF]

open access: yes, 2018
Ввиду сложных условий эксплуатации скважинных приборов до настоящего времени наибольшее применение получили магнитометрические забойные телеметрические системы (ЗТС). Они имеют невысокую стоимость и высокую надежность. Однако, направление и напряженность
Брантов, А. А.
core  

Reactive scheduling using a multi-agent model: the SCEP framework [PDF]

open access: yes, 2001
Multi-agent systems have been successfully applied to the scheduling problem for some time. However, their use often leads to poorly unsatisfactory disappointing results. A new multi-agent model, called supervisor, customers, environment, producers (SCEP)
Archimède, Bernard, Coudert, Thierry
core   +3 more sources

Comparing the Effect of Semi‐Immersive Virtual Reality, Computerized Cognitive Training, and Traditional Rehabilitation on Cognitive Function in Multiple Sclerosis: A Randomized Clinical Trial

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Cognitive impairment is a common non‐motor symptom in Multiple Sclerosis (MS), negatively affecting autonomy and Quality of Life (QoL). Innovative rehabilitation strategies, such as semi‐immersive virtual reality (VR) and computerized cognitive training (CCT), may offer advantages over traditional cognitive rehabilitation (TCR ...
Maria Grazia Maggio   +8 more
wiley   +1 more source

Improving Data Quality with Advanced Pre-Processing of MWD Data

open access: yesGeotechnics
In geotechnical engineering, an accurate prediction is essential for the safety and effectiveness of construction projects. One example is the prediction of over/under-excavation volumes during drill and blast tunneling.
Alla Sapronova, Thomas Marcher
doaj   +1 more source

Estimating Impact and Frequency of Risks to Safety and Mission Critical Systems Using CVSS [PDF]

open access: yes, 2008
Many safety and mission critical systems depend on the correct and secure operation of both supportive and core software systems. E.g., both the safety of personnel and the effective execution of core missions on an oil platform depend on the correct ...
Engum, Erlend A.   +2 more
core   +2 more sources

Space weather effects on drilling accuracy in the North Sea [PDF]

open access: yes, 2005
The oil industry uses geomagnetic field information to aid directional drilling operations when drilling for oil and gas offshore. These operations involve continuous monitoring of the azimuth and inclination of the well path to ensure the target is ...
Allen, W.   +6 more
core   +5 more sources

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