OptaSense - Model QuantX -DAS Interrogator

The QuantX maximum range has been upgraded from 50km to an impressive 100km (on standard single-mode fiber, with no additional components either inside or outside the box) delivering 50,000 2m channels over recorded high quality quantitative data out to 100km – on cables up to 200km long.

This new capability has been well proven on a range of both buried and seabed cables delivering exceptional seismic performance and the potential for massive, seamless linear monitoring of earthquakes and many other applications.

QuantX provides high-quality data from DC to Nyquist, with increased sensitivity, out to a range of 100 km, ten times that of our older standard interrogator units. And unlike other systems in the market, the QuantX DAS Interrogator has delivered proven results on a standard single-mode fiber optic cable, eliminating the need for costly specialty cables.

Quantitative data has always been at the heart of our downhole applications. Now the benefits of a quantitative approach has been brought to our industry-leading long-range applications. As a stand-alone device, or integrated into our software suites, the QuantX interrogator allows a wealth of new information routes that require better data quality and improved signal to noise ratio at longer ranges.

Our Intensity-only applications have delivered a huge benefit to our clients over the last decade with thousands of miles of deployments. The QuantX DAS interrogator is prepared for the next revolution, opening up a wide range of extended capability and performance:

• Fundamental output from interferometer in specific, absolute units
• Reveal Strain behaviour at the same as acoustic behaviour allowing multiple applications to be delivered in parallel – e.g. Pipeline Strain at the same time as TPI
• Ability to process data as an array: beam forming / SNR via signal integration
• Linear response to signals
• True undistorted audio response
• Proven on standard single-mode fiber

For our clients, this means both a superior performance on existing algorithms (lower NAR, higher Pd, improved sensitivity) and the opportunity to open up exciting new application spaces (such as strain monitoring, seismic tensor analysis, electromagnetic monitoring, beam-forming etc.)

At long ranges, the QuantX DAS interrogator is our highest-performing device with a significant sensitivity gain over our baseline 3rd generation and 4th generation devices. The result of four years of technical development where a wholly new interrogation scheme allows us to move away from the frequency-limited dual-pulse approach. QuantX serves as a basis from which we will build upon further in the future.

• Low phase noise, specially-developed RIO laser at the heart of the device
• Wider frequency range at all ranges – delivering 50% of ping rate – full Nyquist
• Up to 100km of quantitative data

The QuantX DAS interrogator provides real-time delivery of quantitative phase and amplitude information over all distances. Other features include:

• +15dB noise floor improvement over equivalent mode 3rd generation
• Easily adjustable gauge lengths which can be optimized for deployed cable length
• 1m output channel pitch (2m in 100km mode)
• 1/2 ping rate frequency output
• GPS time synchronization
• Flat frequency response including down to DC (0 Hz)
• Up to 100km data output, delivering 50,000 channels acquired in real time – 100% of data can be written to SSD or RAID0 HDD
• Designed to maximally exploit the benefits of the latest engineered fibers and cables
• High-sensitivity and low noise floor for strain and temperature monitoring (mK/µε)
• Range of ping rates and acquisition options from 2km up to 200km-long cables with a wide range of gauge lengths