Results 231 to 240 of about 19,871 (273)

Urban exploration using Distributed Acoustic Sensing (DAS)

2021
In contrast to traditional point-like seismometers, Distributed Accoustic Sensing (DAS) can probe the seismic wavefield along a one-dimensional trajectory at unprecedented spatial density over very long arc lengths and at very high temporal sampling rates.
Wollin , Christopher, Wüstefeld , Andreas, Krawczyk , Charlotte   +2 more
openaire   +1 more source

Calibration of Distributed Acoustic Sensing (DAS) VSP Data

78th EAGE Conference and Exhibition 2016, 2016
The usefulness of distributed acoustic sensing (DAS) VSP data to map reservoir structures and extract rock properties is limited only by our understanding of the fidelity and characteristics of the measurement. In order to calibrate both the kinematics and dynamics of DAS VSP products, we document the correspondence of the DAS and geophones ...
M.E. Willis, A. Ellmauthaler, X. Wu, D. Barfoot, C. Erdemir, O.A. Barrios-Lopez, D. Quinn, S. Shaw   +7 more
openaire   +1 more source

Modeling and Analysis of Distributed Acoustic Sensing (DAS) Data in Geothermal Environments

Seventh EAGE Borehole Geophysics Workshop, 2023
DAS technology is particularly suitable for microseismic monitoring application in geothermal environments. This instrumentation can resist to high temperatures (up to about 100°C or more) higher than the operational temperature of standard acquisition instruments (e.g., geophones), allowing the fiber to be located very close to the reservoir.
D. Pecci, F. Grigoli, M. De Solda, J. Porras, A. Mazzotti, E. Stucchi, R. Iannelli   +6 more
openaire   +3 more sources

Danish earthquake recorded by distributed acoustic sensing (DAS)

2020
<p>On September 16th 2018 a Danish earthquake of local magnitude 3.7 was recorded by distributed acoustic sensing (DAS) in a ~23 km long fibre-optic cable. The data are used to study how well DAS can be used as a supplement to conventional seismological data in earthquake localisation. One of the goals in this study is extracting
Camilla Rasmussen, Peter H. Voss, Trine Dahl-Jensen   +2 more
openaire   +1 more source

Distributed Acoustic Sensing (DAS): Theory and Applications

Frontiers in Optics 2015, 2015
Exploiting the effect of Rayleigh backscatter in optical fibers, Distributed Acoustic Sensing (DAS) has emerged as a powerful and rapidly adopted sensing technology with a broad range of uses across a wide assortment of industries.
openaire   +1 more source

Distributed Acoustic Sensing (DAS) for Reservoir Monitoring with VSP

Proceedings, 2013
Distributed Acoustic Sensing (DAS) is a novel technology for seismic data acquisition, particularly suitable for VSP. It is a break-through for low-cost, on-demand, seismic monitoring of reservoirs, both onshore and offshore. We will briefly explain how DAS works, and then, demonstrate its usability for typical VSP applications such as checkshots ...
A. Mateeva, J. Mestayer, B. Cox, D. Kiyashchenko, P. Wills, S. Grandi, K. Hornman, J. Lopez   +7 more
openaire   +1 more source

How to specify and measure sensitivity in Distributed Acoustic Sensing (DAS)?

SPIE Proceedings, 2017
In Rayleigh-scattering-based Distributed Acoustic Sensing (DAS) an optical fiber is transformed into an array of thousands of ‘virtual microphones’. This approach has gained tremendous popularity in recent years and is one of the most successful examples of a fiber-optic sensing method which made its way from the academia to the market.
Haniel Gabai, Avishay Eyal
openaire   +1 more source

Distributed acoustic sensing (DAS) for longwall coal mines

International Journal of Rock Mechanics and Mining Sciences
Seismic monitoring of underground longwall mines can provide valuable information for managing coal burst risks and understanding the ground response to extraction. However, the underground longwall mine environment poses major challenges for traditional in-mine microseismic sensors including the restricted use of electronics due to potentially ...
Derrrick Chambers, Alexander Ankamah, Ahmad Tourei, Eileen Martin, Tim Dean, Jeffrey Shragge, John Hole, Rafal Czarny, Gareth Goldswain, Jako du Toit, Shawn Boltz, James McGuiness   +11 more
openaire   +1 more source

Distributed Acoustic Sensing (DAS) for Intelligent In-Motion Transportation Condition Monitoring

Volume 2B: Advanced Manufacturing, 2022
Abstract Safety is the top priority for every transportation system. Although various aspects of transportation infrastructure’s safety have been studied, in-motion monitoring and detection of defect is still a big concern. Understanding the trend of anomalies, and how to monitor undesired conditions are of high interest in ...
Hossein Taheri, Michael Jones, Suyen Bueso Quan, Maria Gonzalez Bocanegra, Mohammad Taheri   +4 more
openaire   +1 more source

Denoising Distributed Acoustic Sensing (DAS) for shallow water acoustic observations

The Journal of the Acoustical Society of America
Distributed Acoustic Sensing (DAS) offers a cost-effective solution for long-term acoustic monitoring in shallow water environments. However, field data from multiple DAS experiments reveal significant noise, particularly at frequencies above 1 Hz, which challenges its use for acoustic studies.
Wenbo Wu, Xuancheng Huang, Ying-Tsong Lin   +2 more
openaire   +1 more source