Slide Number: 1

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Troika International
WHO? Software House Seismic Data Input and
Output, Media and Format Transfer, Quality
Control, Standardisation And Compaction
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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

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Formats

• Physical
• 7, 9, 21 Track
• Structural/Density
• 200, 356, 556, 712, 800, 1600, 3200, 6250 .......
• Data Structure
• Word, XL, Lotus
• SEG

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(No Transcript)
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9 Track Qualstar
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3480 and Exabyte
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DLT and LTO
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IBM 3590
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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

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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

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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

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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

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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

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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