Troika International

1. Troika International • WHO? • Software House • Seismic Data Input and Output, • Media and Format Transfer, • Quality Control, • Standardisation • And Compaction Troika International - Email: jill@troika.demon.co.uk

2. Jill Lewis • Chair - Technical Standards Committee SEG • Vice Chair 2005 - 2006 • Chair 2006 – 200? • Chair – SEGY Rev1.0 PESGB • SEGY Rev 1.0 Sub-Committee SEG • 26 Years Data Transcription and Management • In Association IEEE Tape Deterioration Study • (9 Track) • Media Study Published 1994 Troika International - Email: jill@troika.demon.co.uk

3. Formats • Physical • 7, 9, 21 Track • Structural/Density • 200, 356, 556, 712, 800, 1600, 3200, 6250 ....... • Data Structure • Word, XL, Lotus • SEG Troika International - Email: jill@troika.demon.co.uk

4. Troika International - Email: jill@troika.demon.co.uk

5. 9 Track Qualstar Troika International - Email: jill@troika.demon.co.uk

6. 3480 and Exabyte Troika International - Email: jill@troika.demon.co.uk

7. DLT and LTO Troika International - Email: jill@troika.demon.co.uk

8. IBM 3590 Troika International - Email: jill@troika.demon.co.uk

9. Tape Problems • 9 track • Stiction (Interim Tape Cleaning) • Damage / Missing BOT (Physical Repair Kit) • Missing Burst (Viewer and Tape Drive Over-ride) • Skew Low Amplitude (Oscilloscope) • 3480/3490 • Solvent Leaching (Tape Head Aware) • Early Manufacture Chromium Dioxide Distribution • Missing Documentation • Format Identification • Knowledge re: Complete Data-sets Troika International - Email: jill@troika.demon.co.uk

10. Data Exchange Formats • 21 Track - SN 328, 338, TI9000, TI10000, TIAC • 7 Track – Freedom to develop own formats • SEG Technical Standard Committee • SEGA – 30 Channel • SEGB – SOS + 2.5 bytes per sample • SEGC – SOS + 32 bits per sample • SEGD – Addressed greater disciplines • SEGX • SEGDef • SEGY Troika International - Email: jill@troika.demon.co.uk

11. Technical Standards • 2005 Recognised that industry need update field acquisition format • ? Should the Committee try and come up with new format • ? Should a new format be all things to all people • Market Poll and companies wanted expansion of SEGD rather than SEGE • Too much invested in software readers/writers • Rev 2.1 Requested to enable use of High Capacity Media • Urgent to respond to high capacity media requirements of more than one line per physical tape • Ratified 2007 Troika International - Email: jill@troika.demon.co.uk

12. Why SEGD3.0 • Where actually is the Data • Put Nav data into the headers • Positioning Formats and UKOOA • Disciplines Addressed • Ocean Sea Bed • Wireless • Telemetric • Passive Troika International - Email: jill@troika.demon.co.uk

13. EM And CSEM • 11th June, 2008 at EAGE Rome 2008 • 16 Attendees • Questions: • Is a new format required – Yes of some sort • Do we need field and processed format – Yes • Does format need to self contained and media independant – Yes • Could SEGD 3.0 be used with different attributes - Yes • Sub-committee to advise on required attributes • Report to TSC for distribution and commenting before SEG • Process Format, current exchange methods to be sent to TSC to identify commonality and create a discussion document Troika International - Email: jill@troika.demon.co.uk

14. SEGD 3.0 - The Detail • SEGD Can be part of a true Data Management tool • Designed to handshake with Processing • Positioning Information • Multi Discipline • EPSG Compliant • Data Management Teams • First Time Commonality • Data from Field to Interpretation • Rune Hagelund – Author SEGD 3.0 Troika International - Email: jill@troika.demon.co.uk