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Built as joint venture between SubSea, Inc., and Geometrics, Inc.

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Presentation on theme: "Built as joint venture between SubSea, Inc., and Geometrics, Inc."— Presentation transcript:

1 Built as joint venture between SubSea, Inc., and Geometrics, Inc.
Digital Marine Seismic Streamer System Built as joint venture between SubSea, Inc., and Geometrics, Inc.

2 Suitable for wide range of surveys
Digital Marine Seismic Streamer System Suitable for wide range of surveys Oil and Gas, Gas Hydrates High-resolution engineering surveys Large channels, up to 240 Small channels, hand deployed Sub-Bottom profiling Uses any impulsive source

3 Digital Marine Seismic Streamer System
Less noise, better quality data: Digital Streamer Means Better Quality Data, Less Time Deploying System Comparable In Price To Analog Systems 8 kHz bandwidth 4 ms to 1/16 ms Sampling Means Suitability For More Kinds of Surveys 24-Bit, 110 dB Dynamic Range

4 Digital Marine Seismic Streamer System
Environmentally Friendly and Easy to Deploy: Light Weight, Easy To Deploy On Small Boats Small Diameter (38 mm, 1.5") Means Easy Deployment by Hand or With Small Winches Easily Shippable, No Special Environmental Requirements, Filled with Inert Silicon Oil Rugged, 1/8" Wall Thickness, Can Be Used As Bay Cable, Transition Zones

5 Over 40 installations in operation
Digital Marine Seismic Streamer System Works with Standard Birds Uses Geometrics CNT-1 PC Controller Separate Windows Display Shots, Gathers, Trigger Timing, Noise, Gun Energy, Tape Status, Alarms Real-Time Brute Stack Multiple Storage Devices Integrates Data from Guns, Nav, Birds Drives Multiple Printers Over 40 installations in operation

6 Component parts A/D Modules: 8 channels per can, up to 240 channels Expands easily to multiple streamers Communicate by Ethernet, no custom interface Easily expand to more channels

7 Component parts Active sections: 8 channels/section
25, 12.5, 6.25, 3.125, custom groups 12.5m group: 100m section, 16 hydrophones per group 6.25m group: 50m section, 8 hydrophones per group 3.125m group: 25m section, 4 hydrophones per group

8 power/interface box: Component parts Trigger Ethernet to computer
Aux channels Interface to birds Capacitance, leakage testing Interface to streamer

9 Laptop or Desktop Computer
Component parts Laptop or Desktop Computer Anything with industry-standard Ethernet Consider storage solutions DVD or RAID’s appropriate

10 On-Deck Configuration:
Digital Marine Seismic Streamer System On-Deck Configuration: Personal Computer Printer Data storage Monitor Ethernet card(s) Ethernet cable to PS Streamer Power Supply On-Deck Aux Channels Rugged Deck cable to winch Optional Repeaters

11 Digital Marine Seismic Streamer System

12 Active Section Construction
Active Sections are constructed from Polyurathane tubing Hydrophones Two Vectran strain members Polypropylene spacers Polypropylene clamp spacers Polypropylene spherical floatation Silicone oil Power, signal and digital connections Bird Coils

13 Active Section Construction
Built to facilitate easy handling Narrow diameter weighs 1.2 kg/m Interior floatation counteracts relatively heavy silicone oil

14 Active Section Construction
Spacers used to stop the streamer from collapsing and are positioned every 1.25m The spacers are pinned to the Vectran to ensure no slippage

15 Active Section Construction
Each hydrophone group has a special handling spacer and clamp to ease hand retrieval and limit skin stretch

16 Active Section Construction
Floatation is added to the interior of the streamer to maintain neutral buoyancy in such a narrow diameter filled with relatively heavy silicone oil

17 Active Section Construction
Floatation is captured in tubular netting to restrict movement and eliminate noise Nylon tie wraps are used to connect the floatation to the Vectran to ensure they ‘move’ under load

18 Active Section Construction
Bird spacers are affixed with epoxy and pins so they won’t slip

19 Active Section Construction
Service loops are left in both the wiring and the floatation netting to ensure that the internal elements flex without damage under load.

20 Active Section Construction
Thicker bird collars are available so you can use Digicourse and other standard birds

21 Software Example Display

22 Maintains Data Ordering for Processing Optimized for Speed
Software Features Fault Tolerant No Data Loss Even If All Tape Drives Fail Maintains Data Ordering for Processing Optimized for Speed Data can be collected on multiple inputs Communicates with other devices navigation birds, compasses downhole encoders

23 Separate, Sizeable Windows
Software Features Separate, Sizeable Windows Shot Multiple Simultaneous Gathers Source Energy, Shot Timing Noise Window User definable alarms with adjustable thresholds Drives multiple plotters for various displays

24 Typical initial screen showing shot, gather, spectra, observers log, noise and trigger windows

25 Visual and audiable alarms can be operator selected

26 Streamer noise, calibrated in micro bars

27 Digital Marine Seismic Streamer System
Detailed Specifications: A-D Converter Module (ADCM): Number of channels per active section: 8 (plus 1 optional depth sensor channel) Sample Rates: 1/16 ms, 1/8 ms, 1/4 ms, 1/2 ms, 1 ms, 2 ms, 4 ms Bandwidth: 1Hz to 8kHz Programmable Gain: 0 dB, 12dB, 24 dB, 36 dB, 42 dB Maximum Input Range: ±2.25V Resolution: 24 Bits including sign Dynamic Range: 120db 1ms QC Tests: Leakage and capacitance of hydrophone elements, pulse, oscillator, timing. Power Consumption: Approximately 100 mA at 48 VDC Calibration Oscillator: 10 Hz to 2 kHz, 1 µvolt to 100 mv AC RMS Dimensions: 38 mm diameter x 22cm long (1.75" diameter by 8.5") Weight: 900 grams (2.0 lbs) Packaging Material: Titanium Connectors: Waterproof high density stainless steel, 41 pin

28 Detailed Specifications:
Digital Marine Seismic Streamer System Detailed Specifications: Hydrophone Array: Active Section: Number of Channels: 8 maximum per section Number of Sections: Dependent on array, 12 sections for 96 channel Hydrophones per group: User option, 16 typical at 12.5m Hydrophone Type: Benthos RDA Geopoint Depth sensor (optional): ± 2.5 percent accuracy, 0-50 meters Jacket Material: Clear polyurethane, 70 Duro, 3.18mm (1/8") wall thickness Outer Diameter: 38 mm (1.5 inches) Ballast Fluid: Inert, non-polluting silicon oil, 100 cSt Weight: ~1.2 kg/m Break Strength: 1250 kg (2750 lbs) Maximum Tow Speed: ~8 knots recording, ~10 knots steaming, depending on sea state Winch Drum Minimum Diameter: 1.5m

29 Detailed Specifications:
Digital Marine Seismic Streamer System Detailed Specifications: Stretch Section: Length: 10, 25 or 50 meters standard Outer Diameter: 38mm, 1.5”. Compass/Bird Coil: IO Model 587, mounted at center of section Jacket Material: Clear polyurethane, 70 Duro, 3.18mm (1/8") wall Outer Diameter: 35 mm (1.375 inches) Ballast Fluid: Inert, non-polluting silicon oil, 100 cSt Weight: ~ 45 Kg for 50 meter section Break strength: 1250 kg (2750 lbs) Tow Cable: Electrical conductors: 10 twisted pair shielded, 22 awg Weight: Dependent on length, ~ 25 kg (55 lbs) for 50 meters Strain member: Kevlar Break strength 1250 kg (2750 lbs)

30 Detailed Specifications:
Digital Marine Seismic Streamer System Detailed Specifications: Deck Interface and Power Supply (DIPS): Power Requirements: 115/230 VAC, 3/1.5 Amp max, 50/60 Hz Voltage to Streamer: 36 – 72 VDC I/O Communications: 100Base TX Fast Ethernet, IEEE compliant Trigger Requirements: Isolated Input, Positive or Negative TTL, software selectable Testing: Continuous monitoring of cable condition for leakage Continuous monitoring of Ethernet for faults and collisions Displays: LCD Display with touch screen LED's for trigger and Ethernet status Optional Auxiliary Inputs: 8, Analog channels with 24 bit resolution Ethernet Connection: RJ-45 Trigger Connection: BNC

31 Detailed Specifications:
Digital Marine Seismic Streamer System Detailed Specifications: Controller: PC based running Geometrics CNT-1 software. Multiple shot and gather windows waterfall and bar graph noise displays windows for shot timing gun energy brute stack tape status spectral analysis Sure-save software protects data loss even with total storage device failure Files automatically kept in sequential order. Auto-switching between storage device dual tape writing Supports multiple printers Full log kept of all parameter changes. Integrates navigation, gun, bird parameters into SEG-D, SEG-Y or SEG-2 header. PC speed and storage must be adequate for the number of channels and recording parameters

32 Only digital seismic streamer with 8 kHz bandwidth
Digital Marine Seismic Streamer System Summary: Only digital seismic streamer with 8 kHz bandwidth Only digital streamer with <40mm OD Only digital streamer that uses inexpensive and reliable Ethernet in the streamer Only digital streamer filled with environmentally-friendly fluid

33 California State University Long Beach
Customer Surveys California State University Long Beach White Squall Survey – San Francisco Bay Gulf of Mexico, Entrepid Survey Geological Survey of Japan, Season 1 Geological Survey of Japan, Season 2 Fugro California Survey

34 CSULB Sea Trials

35 CSULB Sea Trials Deploying cable

36 CSULB Sea Trials Instrument room

37 Handling system on deck
CSULB Sea Trials Handling system on deck

38 CSULB Sea Trials

39 CSULB Sea Trials

40 White Squall Survey

41 White Squall Survey

42 White Squall Survey

43 White Squall Survey

44 White Squall Survey

45 White Squall Survey

46 Gulf of Mexico Entrepid Survey

47 Gulf of Mexico Entrepid Survey

48 Gulf of Mexico Entrepid Survey

49 Gulf of Mexico Entrepid Survey

50 Gulf of Mexico Entrepid Survey

51 Gulf of Mexico Entrepid Survey

52 Geological Survey of Japan

53 Geological Survey of Japan

54 Geological Survey of Japan

55 Geological Survey of Japan

56 Geological Survey of Japan

57 Goals Image the Japan trench Test new Kendon ethernet switches
GSJ SECOND SEASON Goals Image the Japan trench Test new Kendon ethernet switches Test new OYO Geospace bird design Evaluate overall system performance

58 Gun and trolley

59 Winch going into place

60 Geometrics and Sercel Winches

61 Geometrics winch installed

62 GSJ Second Season

63 GSJ Second Season

64 GSJ Second Season

65 GSJ Second Season

66 GSJ Second Season

67 Brute Stack of Japan Trench

68 Brute Stack of Basin Near Japan Trench

69 Fugro Southern California
48 channels 6.25 m interval 80 m offset Fault detection for LNG terminal Contractor: Fugro

70 Fugro Southern California

71 Fugro Southern California

72 Pull Tests

73 Bend Radius Tests

74 Oblique angle pull Tests

75 Vectran Stretch and Relaxation Tests

76 Wing angle tests

77 Noise Tests

78 Noise Tests

79 Noise Tests

80 Noise Tests

81 Noise Tests

82 Noise Tests

83 Noise Tests

84 Noise Tests

85 Noise Tests

86 Noise Tests

87 Noise Tests

88 NX/RX/R Marine Customers
Geophysics Gpr. Int., Canada Kawasaki Geological Engineering, Japan National Institute of Water and Atmospheric Research, NZ Northwest Geophysical Services Ocean Research Institute of Tokyo University SOGO Geophysical Exploration U.S. Geological Survey University of Aarhus, Denmark Gardline Surveys, UK Gulf Ocean Services, Inc. Northern Geophysical of America Alfred Wegener Inst. for Polar and Marine Research Bedford Institute of Oceanography China Offshore Geophysical Company (Bohai) ENEA ‑ Ente per le Nuove Technologie, Italy Geological Survey of Canada University of Kiel, Germany Pukyong University NSA, University of Tokyo NDRIP Japan Geological Survey of Japan California State University Long Beach Fugro, California Mission Exploration


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