SureVIEW sDAS

Fiber optic acoustic monitoringfor subsea wells
Applications• Subsea and land wells• Permanent reservoir monitoring- Flow monitoring
The SureVIEW™ seismic distributed
acoustic sensing (sDAS) interrogatoroffers all of the benefits of fiber optic
acoustic monitoring—from flow
monitoring and optimization, sanddetection and stimulation optimization,
to seismic and microseismic
monitoring—combined in a single
interrogator unit.
Unlike other DAS interrogators, SureVIEWsDAS utilizes Baker Hughes SureVIEW
CoreBright™ optical fiber, a proprietaryfiber specifically designed for durable
oil and gas deployments. This allows
operators to monitor high value assets
through the life of the well, from wellcentric to reservoir focused scales.
The combination of SureVIEW sDAS withCoreBright™ enhanced backscatter
fiber (EBF) permits the acquisitionof data in subsea wells located long
distances from the data acquisition
unit. Testing shows that a verticalseismic profile (VSP) can be acquired
from the shore, or host facility up to50 miles (80 km) away.

The SureVIEW sDAS interrogator canoutput various formats, suitable forvarious applications, and has theability to break down the raw data, as
well as compute attributes on-the-fly(frequency-band energy, individualspectra). It can also record data
either in continuous or trigger mode,
and is equipped with an independent
global positioning system (GPS)–thuspermitting clock synchronization andclock drift control.
SureVIEW sDAS delivers high fidelity
data readily available to processing
and answer solution teams. The system
may also be remotely operated througha connection to the Baker Hughes
cloud services, and is compliant with
HDF5 data format.
From seismic processing, reservoir
characterization, data visualization andadvanced modelling and interpretation,
we deliver answers, not just data.
Contact a Baker Hughes representative
today to learn how we can help you
take energy forward.

- Sand detection- Leak detection- Stimulation optimization- Microseismic monitoring- Vertical seismic profiling (VSP)

Benefits• Delivers an integrated solution
from subsurface equipment toremote visualization and analytics
that saves time and cost
• Simplifies handling andmanagement of data reducing
IT integration time• Offers a better understanding ofthe wellbore/reservoir enablingsustained and/or incremental
production of your asset• Enables understanding of
the entire completion whencoupled with Baker Hughes
SureCONNECT™ downhole
intelligent wet-connect system• Provides a long-term well andreservoir monitoring solution
while reducing operating costsby minimizing/eliminating
unnecessary interventions

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Technical Specifications
Technology Supported

SureVIEW DAS VSP

Type

Rackmount

Number of Channels

8Rack Unit Dimensions

6U

Certifications

CE, TUV

Supply Voltage

110-240 Volts AC, 50 or 60Hz

Typical Power Consumption

Up to 400W

OperatingTemperature Range

0°C to +40°C / 32°F to +104°F

Optical Connectors

F3000/APC

Interface Connections
File Formats
Data Storage

Maximum
Distance Range

This Distributed Acoustic Sensing (DAS) Frequency Band
Energy (FBE) shows acoustic energy acquired in a multi-zone
injection well. This information was used to estimate zonal
flow allocation.

Ethernet, GPS, USB (Geophones)
DC Trigger Pulse (GPS Synced)
PRODML/HDF5/SEG-Y
960GB (Internal)

This side-by-side comparison shows a raw vertical seismic
profile (VSP) shot point acquired above the well (left) versus
VSP from 43 miles (69 km) from the wellhead (right). The “local”(left) case uses CoreBright only. The “remote” (right) case uses a
69km CoreBright lead-in, 3dB attenuation and subsea amplifier,and CoreBright EBF inside the well.

8TB (NAS)
Up to 12 miles (20 km)
with CoreBright fiber
Up to 50 miles (80 km)
with CoreBright EBF

Fiber Type

Single Mode

Spatial Resolution

1.5 meter

Minimum
Sampling Interval

0.33 meter

Gauge Length

Selectable 3, 7, 15, 31 meters

Maximum Pulse Rate10 kHz
0.24 nε (over full bandwidth)

Dynamic Range

1.5pε (narrowband)Up to 1 µε

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