searay - seismic acquisition · pdf filesearay® 428 to address the growing demands of the...
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SeaRay® 428
To address the growing demands of the geophysical industry for ever larger-channel-count surveys and greater layout
flexibility, Sercel has developed the SeaRay 428 designed for competitive redeployable 4-C seabed seismic acquisition.
Designed to support most of today’s OBC operations down to 500 meters, the SeaRay 428 has also been designed with a smaller and lighter cable option capable of the same operations in water depths of less than 100 meters, where smaller and shallower-draft vessels are commonly deployed.
The omni-directional, three-component Digital Sensor Unit (DSU) that is at the heart of the SeaRay 428 provides superior sensor coupling and vector fidelity, and is insensitive to any tilt of the sensor package on the sea floor.
With a proven hardware design and a system architecture that features built-in multi-route system power, data telemetry redundancy and continuous acquisition capabilities the SeaRay 428 provides unparalleled flexibility, efficiency, and reliability in the field.
// SEABED SEISMIC ACQUISITION
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Hydrophone
3C Digital Accelerometer
High-channel-count and long-offset acquisitionThe SeaRay 428 is a high-channel-count system and supports up to 6000 4-C real time deployed in multiple lines. Its low power consumption and high data transmission rate allows for cable lengths of up to more than 35 kilometers.
Multi-component sensorThree orthogonally oriented, digital accelerometers and one hydrophone are integrated to form a single 4-C receiver. The omni-tilt MEMS (Micro Electro Mechanical System) sensor technology brings broad bandwidth, low distortion and extended dynamic range to seabed seismic acquisition.
// IMPROVED DATA QUALITY
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GPS SYNC
RAID 5 DATA STORAGE TELEMETRY
REROUTING
DOUBLEDHV POWER
HV1HV2
Battery-lessPowered directly through the line, the SeaRay 428 does not need any batteries providing unparalleled flexibility and simplicity during deployment and bringing a gain of up to 20% in deployment time.
Fault-tolerant architectureThe SeaRay 428 offers a high level of redundancy minimizing downtime and increasing system productivity.
// OPERATIONAL EFFICIENCY
// ADVANCED QUALITY CONTROL
E-MAINTENANCE REMOTETROUBLESHOOTING
DATA QC PARAMETER AUDIT
Safety assessment
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55
LCI - 428
ENT EXIT
CLR
STATUS
AXCUL - 428
GPS
ESC
OK
F2
F1
LCI-428
SeaRay® 428eSQC-Pro
AXCUL-428
NAS
SeaRay® 428
Local
AlarmOff
HV
HV
OH
Alarm
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
Local
AlarmOff
HV
HV
OH
Alarm
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
Local
AlarmOff
HV
HV
OH
Alarm
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
Local
AlarmOff
HV
HV
OH
AlarmReset
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
Local
AlarmOff
HV
HV
OH
AlarmReset
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
Local
AlarmOff
HV
HV
OH
AlarmReset
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
Local
AlarmOff
HV
HV
OH
AlarmReset
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
BCXU-428
QUALITY CONTROL CLIENT REMOTE CLIENT
Seismic Gateway
PERIPHERALSTAPE DRIVE
SERVERSeaRay® 428 SERVERPERIPHERALS
PLOTTER
ACQUISITION
LINE #1
LINE #2
LINE #3
LINE #n
NAVIGATIONGUNS
Recorder
Fibre Channel (FC-AL)
Ethernet
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BCXU-428
SeaRay® 428 SERVER
AXCUL-428
SEISMIC GATEWAY
GPS
LCI-428
NAS
LINE CONTROLLER•High-voltage power-supply•Interface between recorder and seabed electronics
SEISMIC DATA RETRIEVAL, FORMATTING, PROCESSING & EXPORT
•Red Hat Linux operating system•Up to 1.8 TB RAID-5 Disk Feature and power supply redundancy
AUXILIARY CHANNEL UNIT•Digitization of analog auxiliary channels•Eight-channel Input
SEABED SERVER NETWORK CONNECTIVITY•Unlimited remote access•Data Quality Control / Parameter Audit / e-troubleshooting
GPS RECEIVER USED FOR SYSTEM SYNCHRONIZATION
•Propagation of GPS time reference•Tolerance to loss of PPS signal
LINE CONTROL INTERFACE•Line Management
(data management and system testing)•Interface to Seabed Server
& Navigation•Auxillary Channel management
NETWORK-ATTACHED STORAGE•Up to 2TB disk capacity
(125hr of seismic data - 1000 ch@2ms)•RAID 1 (mirroning) Disk feature
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25 m
TZAC
Max 2400 m50 m
Optical Extender
Electrical Extender
SBLU
SBLU
B2B
SBLU
B2B
B2BDECK CABLE
UP TO 60 RP BETWEEN SBLU
PACAP
UP TO 60 RP BETWEEN SBLU
SBLU
B2B
UP TO 60 RP BETWEEN SBLU
UP TO 60 RP BETWEEN SBLUUP TO 60 RP BETWEEN SBLU
UP TO 60 RP BETWEEN SBLU
B2B
SBLU
OR
Max 675 m
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AQASSeaRay ACTIVE SECTION
•Data acquisition sections•10 Receiver Point per AQAS•Customizable Receiver Point spacing
(max 55m)
…
…TZAC
TRANSITION ZONEADAPTER CABLE
•Short SeaRay Adaptor cable•Length : less than 100 meters
TAIL
SW
IVEL
TBJ
24m
TBC
SEABED LINE UNIT•Data routing and power supply
of active channels (60 RP max)•Data telemetry Repeater
TAIL SWIVEL TBJ
24mTBC
SBLU
BACK TO BACK ADAPTER•Adapter between two active sections•Version including mechanical fuse available
TAIL SWIVEL TBJ
24mTBC
B2B
DECK CABLE
TAIL
SWIV
EL
TBJ
24m
TBC
FLEXIBLE RECORDER / IN-SEA LINK
•Interface between BCXU-428 and Aquisition Line
•Standard length : 50m (up to 100m)
EXTENDER
TAIL
SW
IVEL
TBJ
24m
TBC
ELECTRICAL EXTENDER•Length : up to 675m•Longer lengths achieved by connecting
several extenders together
OPTICAL EXTENDER•Length : up to 2400m
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//SEABED SOFTWAREData acquisition softwareSeabed Software is a package that totally controls the seismic instrument spread and operations. It also performs all the requested computations before recording data onto tapes or disks. Taking advantage of its client/server architecture, Seabed Software allows secured remote access through Internet connections.
//eSQC-ProQuality control softwareeSQC-Pro is a powerful integrated tool for real-time QC of seismic data acquisition without interrupting production. Its client/server architecture allows real-time QC display on a remote standard PC through a secure Internet connection.
//SGASignal graphic analyzerSGA is the latest generation of Signal Graphic Analyzer QC Tool. Featuring a new user-friendly graphical interface and being able to work in real-time or standalone mode, SGA can be installed on any computer to perform detailed signals analysis. The software supports a wide range of graphical displays (amplitude, spectrum, distortion, phase,…) and is compatible with the latest SEG-D file revisions (rev 2.1 and 3.0).
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LINE
LCI-428
SERVER
CABLEBCXU-428
CLIENT
LCI - 428
Local
AlarmOff
HV
HV
OH
AlarmReset
Power
Emergencystop
LeakageOverload
Remote HV1 HV2 HV3
Options
//UNMANNED SATELLITE RECORDERThe unmanned satellite recorder can be deployed onboard a variety of small watercrafts and can be remotely controlled and monitored by key seismic operations personnel centrally located on the master recording or source vessel and/or other locations offshore or onshore. This solution enables greater flexibility during deployment and roll-out while ensuring real-time quality control of all seismic parameters and seismic data.
//SeaRay LINE TESTERThe SeaRay line tester is a complete and autonomous package for cable vessels or workshops providing :• Line testing• Spread monitoring during cable deployment• Troubleshooting for SeaRay sections and in-sea modules
The SeaRay Line Tester can also run on a ruggedized laptop for deck monitoring, command and control.
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Sercel - France 16 rue de Bel AirB.P. 30439 - 44474 CARQUEFOU CedexTéléphone : (33) 2 40 30 11 81Fax : (33) 2 40 30 19 48E-mail : [email protected] SAS au capital de 2 000 000 €Siège Social : 16 rue de Bel Air - 44470 CARQUEFOU 378.040.497 R.C.S. Nantes Code APE 2651B
Sercel Inc. - U.S.A. 17200 Park RowHouston, Texas 77084Telephone : (1) 281 492 6688Fax : (1) 281 579 7505E-mail : [email protected]
www.sercel.com
© Sercel 10/16