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Sigma TM cableless seismic system

Sigma TM cableless seismic system. Confidential. One-stop shop for seismic instrumentation. Confidential. The industry now accepts the idea of cablefree, but: Waiting for one system to emerge. WAITING FOR UNIVERSAL (NON-NICHE SYSTEM). Successful company/system also requires right mix

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Sigma TM cableless seismic system

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  1. SigmaTM cableless seismic system Confidential

  2. One-stop shop for seismic instrumentation. Confidential

  3. The industry now accepts the idea of cablefree, but: • Waiting for one system to emerge. • WAITING FOR UNIVERSAL (NON-NICHE SYSTEM). • Successful company/system also requires right mix • of commercial and technical capability. Confidential

  4. Sigma – the sum of cablefree functionality. Sigma – world’s only Second Generation cablefree system. Sigma – the 3-in-1 recorder. Confidential

  5. Sigma – new SAU. • now under production. Confidential

  6. iSeis Sigma SAU (summary):- • Ruggedized 3 channel unit (4 GB min memory, expandable – 64 GB). Not limited to 4 GB. • GPS PPS signal - used to condition accurate internal clock. • Source trigger accuracy to +/- one microsecond. • Mesh Radio Network (MRN) used during deployment to assign channel number and during recording to check status of SAU, geophones, battery (QC functions). • Cable-less no longer means QC-less. Confidential

  7. iSeis Sigma: • SAU Specifications: • 3 channels per SAU • 24 bit sigma-delta converters • Dynamic range: 144 dB (system) • Greater than 118 dB (measured at 2 mS) • Bandwidth: DC to 15 KHz • Analog filter flat response to 8,000 Hz • Digital Filter Bandwidth = 0.85 of sample rate • Common Mode Rejection: Greater than 100 dB • Crosstalk: Better than -125 dB • Noise Floor: 0.2 microVolt RMS noise (2 mS sample rate). Confidential

  8. iSeis Sigma: • SAU Specifications: • Trigger Accuracy: +/- 1 microsecond at all sample rates • Max. Input Signal: Standard (x4 gain): 1.72 Volts peak to peak • Preamplifier Gains: x4 & x32 standard; remotely selectable • Anti-alias Filters: 85 % of Nyquist frequency • Digital Filters: Low Cut – User selectable frequency • Sample interval: 0.0208, 0.0625, 0.125, 0.250, 0.500, 1.00, 2.00, 4.00, 8.00, 16.00 millisecond (for passive/permanent monitoring as well as conventional recording). Confidential

  9. iSeis Sigma – sources (summary): • Supports advanced seismic techniques: • Source-driven acquisition. • (SSC., is world’s largest independent development center for vibroseis control R&D). • Multiple Sources: • Dynamite • Vibroseis • Weight Drop (AWD's) • Air Gun. Confidential

  10. iSeis Sigma: • Supports every advanced seismic technique: • Dynamite, AWB, Airgun • Manual • Source driven • Vibroseis (single and flip-flop) • Manual • Source driven • Slip Sweep • Manual • Source driven • Support for multiple sweeps/VP • Full support for ISS and DS3 (BP inventions). • Zenseis*, HFVS etc. • *Trademark of ConocoPhillips Corporation Confidential

  11. iSeis Sigma: • Full integration with all Seismic Source Co. hardware and software products for complete turnkey system. Sigma graphical observer screen Source info SAU deployment status Confidential

  12. iSeis Sigma: • Sigma integrated Source and Recording Software: • Stakeless survey - automated operation. • Final GPS positions for all source locations. • Complete control of sources and SAUs. • Daily production reports. Confidential

  13. iSeis Sigma: • Full system development and test facilities, incl: • Source and system integration/field testing area. • Environmental testing. • International field support. • International training on • cablefree operations. Confidential

  14. Synchronisation:- • VCXO • GPS • VHF iSeis Sigma: Basic configuration GPS and status LEDs Battery LED Green – Battery Good Orange – Battery Low Red – Battery needs to be charged Status LED Green Flashing – Geophone Test and Instrument Test passed all three channels RED flashing slowly – Geophone Test failed RED Flashing FAST – internal error must send in for repair. Operation Solid GREEN – Passed all initial tests and system is recording Flashing RED then GREEN – Recording but failed Geophone test Flashing Green – PASSED test but not recording Flashing RED – FAILED test and not recording LED OFF _ GPS acquired waiting for time synchronization KCK input (flag) KCK input downline STATUS BATTERY Harvest/PC Ethernet Power #1 Power #2 KCK input upline Confidential

  15. iSeis Sigma: Shoot blind mode SAU Confidential

  16. iSeis Sigma: MRN configuration today SAU Sigma TZ/SM float Confidential

  17. iSeis Sigma: MRN configuration today SAU Sigma TZ/SM float Confidential

  18. iSeis Sigma MRN:- • MRN wake-up SAUs, start/stop recording, optimize memory & battery life. • MRN can change globally or box-by-box: preamp and sample rate settings. • Status messages transmitted via MRN includes: • Recording status • Battery status • RMS noise • Geophone status • (leakage, Fn, damping, impedance) • Memory test • GPS status. • SAU files keep track of • location. Confidential

  19. iSeis Sigma: MRN configuration and deployment. “So easy, a child could do it.” SAU Sigma TZ/SM float Confidential

  20. Mesh-Check Deployment PC (“Jake-box”) or software, can be used:- SAU Observer / CRU Layout crew Trouble shooter Pick-up crew Mesh-Check Deployment PC (“Jake-box”)

  21. iSeis Sigma MRN deployment:- • During deployment, “Sigma Observer” can be used by layout crew to check mesh connectivity. • Assists in repeater location (if nec). • Reports three strongest MRN neighbours for each location. Confidential

  22. iSeis Sigma: • MESH-driven acquisition Confidential

  23. iSeis Sigma: Cablefree WiFi mode for data return. Relay SAU Confidential

  24. iSeis Sigma: Cablefree WiFi mode for data return. Relay SAU Confidential

  25. iSeis Sigma: Mixed mode Confidential

  26. iSeis Sigma: Mixed mode Traditional cable telemetry system Confidential

  27. iSeis Sigma: • Sigma™ Multiple Download/Harvesting Options: • No internal battery to worry about! • * Wi-Fi (direct to CCU or “pass-by download”) • Combined Harvester (office-based) • Portable Mass Harvester (truck-based) • * PC-based Mobile Harvester (man-portable) • * Data Mini-Transporter (man-portable). * Download DURING acquisition! Confidential

  28. iSeis Sigma: Sigma master mode • Impulsive mode: allows max. flexibility with SSC Universal Encoder hook-up, energy saving through MRN remote control. • Vibroseis mode: Can use all new • vib techniques with “Sigma Observer” software (TDMA option). TDMA radio upgrade option

  29. iSeis Sigma: Sigma master mode Shows active receivers required and available for each source point.

  30. iSeis Sigma: Sigma master mode Combines with Force2 TDMA radio option to provide widest range of source and recording system control/integration.

  31. Fleet n+1 Fleet n<256 TDMA Radio Option GPS TDMA Radio Option (includes built-in Signature Recorder) Vib- WiFi Vib- WiFi Vib- WiFi Vib- WiFi • TDMA option for existing • vib radios, provides:- • Vib QC, positions & CoG • Vib radio sims • uSec timing accuracy • SPS/XPS operations • Source-driven acqn. Vib QC & status Fleet 1 Fleet n

  32. Sigma – the sum. Putting the pieces together. • Cable systems restrict flexibility by: • Forcing sources and receivers to operate as one system. • One may have to wait for the other. • Sigma allows sub-systems to be independent: • Failure or delay of one part, does not halt the rest. • Improved source-driven acquisition. • Mesh Radio Network permits control over spread if required. • “Harmonisation” of subsystems is only made where necessary.

  33. Sigma – the sum. Typical cable system philosophy Fleet n Source controller All sources ready? Fleet 1 CRU Master clock All channels ready?

  34. Sigma – the sum. Sigma philosophy (no dead time for sources or receivers). Recording accuracy of a few microseconds for sources and receivers. GPS TDMA Radio Option (includes built-in Signature Recorder) Vibs with TBR and/or VSR Mobile or multiple CRU(s)

  35. Sigma – the sum. Sigma philosophy Mesh Radio and/or WiFi for receiver deployment overview. GPS TDMA Radio Option (includes built-in Signature Recorder) Vibs with TBR and/or VSR Mobile or multiple CRU(s) MESH Bridge

  36. Vibroseis: ISS, DS3, Flip-flop, HFVS, Slipsweep etc Seismic channels and sources are free and independent.

  37. Sigma – the summation Receivers Continuous recording with ~microsecond accuracy t

  38. Sigma – the summation Sources Continuous time-break/sweep recording with ~microsecond accuracy t

  39. Sigma – the summation Smart harvesting – putting it all together File generation: Vibroseis, Correlation, Stack etc Time Break Recorders, Signature Recorders, survey, etc

  40. iSeis Sigma: Mixed Sigma mode (cable and cableless) Slave mode (Sercel.)

  41. iSeis Sigma: Mixed Sigma mode (cable and cableless) Slave mode (Aries.)

  42. iSeis Sigma: Mixed Sigma mode (cable and cableless)

  43. iSeis Sigma: • Already proven in the field. Confidential

  44. iSeis Sigma: • Already proven in the field (passive monitoring) Confidential

  45. iSeis Sigma: • TZ/shallow water operations. Confidential

  46. Range of seismic equipment solutions, for source control, QC and acquisition.Sigma – 2nd Generation cablefree, for:Stand alone (three modes available). Slaved to other systems. Land, TZ and shallow water. All latest source techniques. Fully integrated.Cablefree is now a universal approach. Confidential

  47. SigmaTM cablefree land seismic system How can we help you? Confidential

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