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 of commercial and technical capability.

Confidential Sigma – the sum of cablefree functionality. Sigma – worlds only Second Generation cablefree system. Sigma – the 3-in-1 recorder.

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

Confidential iSeis Sigma SAU (summary):- Not limited to 4 GB. 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 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 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: , , 0.125, 0.250, 0.500, 1.00, 2.00, 4.00, 8.00, millisecond (for passive/permanent monitoring as well as conventional recording).

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

Confidential 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 DS 3 (BP inventions). Zenseis*, HFVS etc. *Trademark of ConocoPhillips Corporation

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

Confidential 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 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 iSeis Sigma: Basic configuration KCK input downline KCK input (flag) Power #1Power #2Harvest/PC Ethernet GPS and status LEDs Synchronisation:- VCXO GPS VHF BATTERY STATUS 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 upline

Confidential iSeis Sigma: Shoot blind mode SAU

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

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

Confidential 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.

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

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

Confidential 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 iSeis Sigma: MESH-driven acquisition

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

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

iSeis Sigma: Mixed mode Confidential

iSeis Sigma: Mixed mode Confidential Traditional cable telemetry system

Confidential 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!

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

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

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

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

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.

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

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

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

Vibroseis: ISS, DS 3, Flip-flop, HFVS, Slipsweep etc Seismic channels and sources are free and independent Seismic channels and sources are free and independent.

Sigma – the summation Continuous recording with ~microsecond accuracy Receivers

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

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

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

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

iSeis Sigma: Mixed Sigma mode (cable and cableless)

Confidential iSeis Sigma: Already proven in the field.

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

Confidential iSeis Sigma: TZ/shallow water operations.

Confidential