August, 2005Troika International - Slide Number: 1 Troika International WHO? Software House Seismic Data Input and Output, Media and Format Transfer, Quality Control, Standardisation And Compaction

August, 2005Troika International - Slide Number: 2 Jill Lewis Chair - Technical Standards Committee SEG Vice Chair 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

Formats Physical –7, 9, 21 Track Structural/Density –200, 356, 556, 712, 800, 1600, 3200, Data Structure –Word, XL, Lotus –SEG August, 2005Troika International - Slide Number: 3

August, 2005Troika International - Slide Number: 4

August, 2005Troika International - Slide Number: 5 9 Track Qualstar

August, 2005Troika International - Slide Number: and Exabyte

August, 2005Troika International - Slide Number: 7 DLT and LTO

August, 2005Troika International - Slide Number: 8 IBM 3590

August, 2005Troika International - Slide Number: 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

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 bytes per sample –SEGC – SOS + 32 bits per sample –SEGD – Addressed greater disciplines –SEGX –SEGDef –SEGY August, 2005Troika International - Slide Number: 10

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 August, 2005Troika International - Slide Number: 11 Technical Standards

Where actually is the Data –Put Nav data into the headers –Positioning Formats and UKOOA Disciplines Addressed –Ocean Sea Bed –Wireless –Telemetric –Passive August, 2005Troika International - Slide Number: 12 Why SEGD3.0

11 th June, 2008 at EAGE Rome 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 August, 2005Troika International - Slide Number: 13 EM And CSEM

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 August, 2005Troika International - Slide Number: 14 SEGD The Detail