Methods and apparatus for sensing fluid flow within a conduit using a Distributed Acoustic Sensing (DAS) system. The DAS system may lower production costs and may offer some technical advantages over fiber Bragg grating (FBG)-based flowmeters such as auxiliary measurement of strain from the ...
If you deliver Distributed Acoustic Sensing (DAS) systems for pipeline monitoring, perimeter security, or border control (to name a few), then it is likely that your systems will be installed in harsh environments in remote places. Wouldn’t it be nice if you could install the system and fo...
Distributed acoustic sensing systems are fiber optic based optoelectronic instruments measuring acoustic interactions along the fiber optic sensing cable.
Global experts in distributed acoustic sensing DAS and distributed fiber sensing. Sintela supply the next generation of DAS.
AP Sensing offers distributed optical sensing technology (DTS, distributed temperature sensing, DAS, distributed acoustic sensing, DVS, distributed vibration sensing) for a wide range of applications. Based on our HP/Agilent heritage, with over 35 years of optical measurement expertise, we stand for ...
Various disclosed distributed acoustic sensing (DAS) based systems and methods include embodiments that process the DAS measurements to detect one or more contrasts in acoustic signatures associated with one or more fluids flowing along ... RAVI KRIS,SAMSON ETIENNE M.,MAIDA JOHN L.,... 被引量:...
Field Trials of Distributed Acoustic Sensing for Geophysical Monitoring Distributed Acoustic Sensing DAS, a rapidly evolving fiber-optic based technology for permanent in-well and geophysical monitoring, was used to record VSP data in two field trials in Shell assets onshore Canada and USA. Useful in...
AcoustiSens Wideband Single-Mode Optical Fibers, are vibration sensing fibers and cables with optimal performance for Distributed Acoustic Sensing (DAS) systems. Using a waveguide design based on the ITU-T G.657.A1 telecom-grade single-mode standard, AcoustiSens Wideband Optical Fibers significantly...
A novel fiber-optic distributed acoustic sensing (DAS) system with wide frequency response of 0.1 Hz ~ 30 kHz is proposed and experimentally demonstrated. The DAS, which is induced by adjacent ultra-weak fiber Bragg gratings (UWFBGs) using dual-pulse and 3 × 3 fiber coupler in direct detect...
First Downhole Application of Distributed Acoustic Sensing (DAS) for Hydraulic Fracturing Monitoring and Diagnostics M. Molenaar, "Field cases of hydraulic fracture stimulation diagnostics using fiber optic distributed acoustic sensing (DAS) measurements and Analyses", In: SPE Middle East Unconventional Gas...