Guoxing Huijin

Distributed Optical Fiber Temper Distributed Optical Fiber Vibrat Data acquisition software Data interpretation software

Distributed Optical Fiber Vibrat

Distributed Optical Fiber Vibration Monitoring System (gDAS-S300)
The distributed optical fiber vibration monitoring system sends pulse light to the optical fiber installed in the well and detects the Rayleigh backscattering signal at the same time. When

产品特点

Technical superiority and highlights

Heterodyne phase principle based on Rayleigh scattering
Through phase demodulation and Fourier transform, the noise data in time domain is transformed into acoustic field data in frequency domain to realize the real-time dynamic monitoring of sand and liquid penetration of different downhole perforation clusters.
Provides continuous detection and event location with a minimum spatial resolution of 1 meter
Gauge length options available
Detection of acoustic frequencies ranging from 1 Hz to 20,000 Hz
Single-port single-mode fiber configuration, up to 10 km well depth
Can be used in combination with distributed temperature sensing systems and other downhole tools

gDAS-S300 Performance Specifications
Measurement data	Whole wellbore seismic waveform or vibration profile
Laser source	Laser Class 1 Certification IEC/EN 60825-1:2014
	EMC Directive 2004/108/EC
	Low Voltage Directive 2006/95/EC
Measurement parameters	Original measurement type: vibration strain
	Working principle: coupling phase measurement
	Operating wavelength: 1550 nm
	Measured length: 10 km
	Output space interval: 2,5,10 m
	Gauge length: 5,10,20,30,40m
	Output time interval: 0.1, 0.25, 0.5, 1, 2 ms
	Low frequency limit: 1 Hz
	High frequency limit: 20 K Hz