Sonardyne UK (Head Office)
T. +44 (0) 1252 872288
F. +44 (0) 1252 876100
E. sales@sonardyne.com
www.sonardyne.com
Datasheet
Subsea Acoustic Data Logger System
Description
Sonardyne's new generation of
Subsea Acoustic Data Logger System
uses a spread spectrum, high speed
acoustic link to allow large volumes
of logged data to be rapidly and
accurately retrieved at the surface.
Key Features
•
Designed for ROV deployment and
retrieval
•
Easily moved between wells
•
High speed, spread spectrum
acoustic data link
•
Interfaces to all industry standard
gauges
•
Depth rated to over 10,000 feet
(3,000 Metres)
•
Fully adjustable data logging rate
•
Long-life seabed deployment
When combined with the feature of
ROV portability, the system is the
ideal solution for initial well
appraisal, where frequent downhole
pressure and temperature readings
need to be logged over a period of
a few weeks. However, the new
system is equally suitable for long-
term deployments where it may
remain installed on a wellhead,
logging data for several years
without intervention.
The latest system is ideal for initial
well appraisal and can easily be
moved between wells by ROV. It uses
a high speed acoustic data link for
rapid retrieval of the large volumes
of downhole data often associated
with well appraisal activities. As
such, the subsea unit can be
interfaced to all industry standard
downhole gauges whilst custom
interfaces can be supplied on
request.
Sonardyne UK (Head Office)
T. +44 (0) 1252 872288
F. +44 (0) 1252 876100
E. sales@sonardyne.com
www.sonardyne.com
Specifications
Subsea Acoustic Data Logger System
Feature
Depth Rating
Operating Frequency
Transducer Beamshape
Transmit Source Level (dB re 1µPa @ 1m)
Receiver Threshold(dB re 1µPa)
Power
Typical Battery Life (assuming 3 guages)
At a reading rate of: 1 reading every 10 minutes 230 days
1 reading every hour
2.5 years
1 reading every day
5 years
Acoustic Data Link
High Speed, Spread Spectrum
Acoustic Data Transmission Rate
600 Baud (True payload rate- raw data rate is 1200 Baud)
Data Storage Capacity
8Mb Standard (Expandable to 16Mb)
External Interfaces
Analogue or
1x Gauge
√F
Serial
1x Serial Port
External connectors
ROV Mateable
Battery Storage
14.5 V
ROV Transportable
Yes
Mechanical Construction
Super Duplex Stainless Steel
Weight in Air
70kg
Weight in Water
50kg
Note 1. The standard 8Mb capacity represents more than 3 years of data storage, at one reading (of 3 gauges) every 10 minutes.
For virtually all practical applications, there will be substantial memory capacity left unused at the end of the deployment, as the
memory usage life will typically exceed the life of the internal battery pack.
Type 8057
3,000 Metres
LF (14–19kHz)
±90º (Shallow)
±30º (Deep)
192dB (Shallow)
202dB (Deep)
<100 dB
Long Life Lithium
Specifications subject to change without notice - 10/2006
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