Results 41 to 50 of about 532 (178)

Theoretical Channel Model and Characteristics Analysis of EM-MWD in the Underground Coal Mine

IEEE Access, 2021
The measurement while drilling (MWD) system in underground coal mine currently uses wire for signal transmission. However, it has shortcomings such as strict technical requirements for cable drill pipe processing and high cost of use.
Cheng Zhang, Haobin Dong, Jian Ge, Huan Liu   +3 more
doaj   +1 more source

A Machine Learning Approach for Material Type Logging and Chemical Assaying from Autonomous Measure-While-Drilling (MWD) Data [PDF]

Mathematical Geosciences, 2021
Understanding the structure and mineralogical composition of a region is an essential step in mining, both during exploration (before mining) and in the mining process. During exploration, sparse but high-quality data are gathered to assess the overall orebody.
Rami N. Khushaba, Arman Melkumyan, Andrew J. Hill   +2 more
openaire   +2 more sources

BILSTM-Based Deep Neural Network for Rock-Mass Classification Prediction Using Depth-Sequence MWD Data: A Case Study of a Tunnel in Yunnan, China

Applied Sciences, 2023
Measurement while drilling (MWD) data reflect the drilling rig–rock mass interaction; they are crucial for accurately classifying the rock mass ahead of the tunnel face.
Xu Cheng, Hua Tang, Zhenjun Wu, Dongcai Liang, Yachen Xie   +4 more
doaj   +1 more source

Evaluasi Inklinasi dan Azimuth Target Reservoir Dengan Menggunakan Measurement While Drilling (MWD) pada Sumur H Lapangan R [PDF]

, 2022
Data yang didapatkan dari Measurement While Drilling (MWD) yaitu Survey Trayektori Lubang Sumur berupa Inklinasi dan Azimuth. Dalam hal ini untuk mencari inklinasi dan azimuth penulis dengan menggunakan Measurement While Drilling (MWD) yang pada dasarnya
Hidayanti, Rani
core  

Preliminary Investigation into Measurement While Drilling as a Means to Characterize the Coalmine Roof

Resources, 2020
The variable nature of the coalmine roof poses a challenge to roadway stability during underground coal mining. There have been fatalities and financial losses in the coal mining industry due to roadway failures and roof falls.
Manoj Khanal, Johnny Qin, Baotang Shen, Bongani Dlamini   +3 more
doaj   +1 more source

Surface Drilling Parameters and Drilling Optimization Techniques: Are They Useful Tools in Gas Hydrate Detection?

Energies, 2022
This paper examines the application of surface drilling parameters and drilling optimization techniques, such as mechanical specific energy (MSE) and equivalent strength (EST), in detecting hydrate gas-bearing sediments during drilling operations.
Adam Wspanialy, Moe Kyaw
doaj   +1 more source

Numerical Simulation Study on the Flow Properties of Materials for Plugging While Drilling in MWD

, 2022
The method of plugging while drilling has been one of the commonly used methods to control formation loss during drilling. The damage to materials for plugging while drilling to MWD has become a complex problem.
Mingbiao Xu, Qinglin Liu, Jun Zhou, Peng Xu, Lei Pu, Jianjian Song   +5 more
core   +1 more source

Rock mass structural recognition from drill monitoring technology in underground mining using discontinuity index and machine learning techniques

International Journal of Mining Science and Technology, 2023
A procedure to recognize individual discontinuities in rock mass from measurement while drilling (MWD) technology is developed, using the binary pattern of structural rock characteristics obtained from in-hole images for calibration.
Alberto Fernández, José A. Sanchidrián, Pablo Segarra, Santiago Gómez, Enming Li, Rafael Navarro   +5 more
doaj   +1 more source

Rock support prediction based on measurement while drilling technology

, 2021
In tunnelling, rock mass support is designed based on the observed rock mass conditions. These conditions are determined by rock mass characterization.
Funehag, Johan, Schunnesson, Håkan,, Saiang, David, Saiang, David,, van Eldert, Jeroen,, Schunnesson, Håkan, Funehag, Johan,, van Eldert, Jeroen   +7 more
core   +1 more source

Development and application of MWD system for DTH drilling rig

Yantu gongcheng xuebao
The researches on the measurement while drilling (MWD) technology in the field of open-pit mining are still in the early stage, and the development of MWD systems is the primary task to realize the application of MWD technology in the mining engineering ...
HOU Shijun 1, DING Weijie 1, TIAN Shuaikang 1, LIANG Shufeng 1, LIU Dianshu 1, GUO Dachao 2
doaj   +1 more source