Rapid profiling rock mass quality underneath tunnel face for Sichuan-Xizang Railway
Underground SpaceThe Sichuan-Xizang Railway is a global challenge, surpassing other known railway projects in terms of geological and topographical complexity. This paper presents an approach for rapidly profiling rock mass quality underneath tunnel face for the ongoing ...
Siyuan Wu +4 more
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An Overview on Measurement-While-Drilling Technique and its Scope in Excavation Industry
, 2015 Measurement-while-drilling (MWD) aims at collecting accurate, speedy and high resolution information from the production blast hole drills with a target of characterization of highly variable rock masses encountered in sub-surface excavations.
Rai, P., +3 more
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Study on Acoustic Wave Transmission Technology of Measurement-While-Drilling (MWD) Data [PDF]
Proceedings of the 2018 3rd International Conference on Advances in Materials, Mechatronics and Civil Engineering (ICAMMCE 2018), 2018 Quanxin Li, Long Chen, Jun Gao
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Semi-supervised method for tunnel blasting quality prediction using measurement while drilling data
Journal of Rock Mechanics and Geotechnical EngineeringPredicting blasting quality during tunnel construction holds practical significance. In this study, a new semi-supervised learning method using convolutional variational autoencoder (CVAE) and deep neural network (DNN) is proposed for the prediction of ...
Hengxiang Jin +5 more
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Environmental Measurement-While-Drilling system for real-time field screening of contaminants [PDF]
, 1995 Sampling during environmental drilling is essential to fully characterize the spatial distribution and migration of near surface contaminants. However, the analysis of these samples is not only expensive, but can take weeks or months when sent to an off ...
Bishop, L. B. +4 more
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Borehole Azimuth Correction Method Considering the Effect of Underground Magnetic Veins
Shiyou huagong gaodeng xuexiao xuebaoIn order to improve the accuracy of magnetic azimuth measurement,it is often necessary to establish a more accurate local geomagnetic model to obtain precise magnetic declination information.Compared with global geomagnetic model, local geomagnetic model
Gui HU +5 more
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Measurement While Drilling system in Aitik mine
, 2007 Both Measurement While Drilling (MWD) and image analysis systems are useful tools that today are in use in mining industry. The data interpretation for both systems has been proposed by different studies, but often requiring site specific calibration ...
Mozaffari, Shahram
core
GeosciencesThe growing global demand for critical raw materials (CRMs) essential to renewable energy, electromobility, and digital technologies has accelerated the need for advanced exploration methods capable of operating in increasingly challenging geological ...
Nikolaos Avrantinis +2 more
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Use of Gyro-MWD Technology Offshore, A Step Change in Drilling Performance in Saudi Aramco
, 2010 Over the past few years, Saudi Aramco has had major efficiency improvements while drilling and completing smaller diameter hole sections. Such improvements provided significant reductions in rig time, and consequently reduced the overall operational cost.
Abhijeet Sarkar +4 more
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FIELD RESULTS USING MEASUREMENT-WHILE-DRILLING DIRECTIONAL SYSTEMS IN LONG BEACH, CALIFORNIA
, 1981 One of the more extensive uses of directional drilling anywhere in the world has been in the development of the East Wilmington Oil Field in Long Beach, California.
M. Gearhart
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