SEG Technical SEG Technical Standards Standards CommitteeCommittee MeetingMeeting

EAGE Conference London EAGE Conference London 20132013Tuesday Jun 11, 2013Tuesday Jun 11, 2013

Jill Lewis (jill@troika-int.com)Jill Lewis (jill@troika-int.com)

TSC meeting at the EAGE TSC meeting at the EAGE 20132013

OverviewOverview

Location: Novotel London Excel, Royal Victoria Location: Novotel London Excel, Royal Victoria roomroomOpen TSC meetingOpen TSC meeting 15:00-16:0015:00-16:00SEG-Y Rev 2 discussionSEG-Y Rev 2 discussion16:00-18:0016:00-18:00

The times are approximate. The room is The times are approximate. The room is reserved from 14:00 to 18:00reserved from 14:00 to 18:00

Technical Standards Technical Standards Committee 2013Committee 2013 Chair – Rune Hagelund Chair – Rune Hagelund

(rune.hagelund@daeco.no)(rune.hagelund@daeco.no) Vice-chair – Bill Rimmer Vice-chair – Bill Rimmer

((<bill@rimmer.com)<bill@rimmer.com)

Important web Important web addressesaddresses Technical standardsTechnical standards

http://www.seg.org/tshttp://www.seg.org/ts

Technical Standards Committee Technical Standards Committee online collaboration siteonline collaboration site

http://www.seg.org/tschttp://www.seg.org/tsc

If you are interested in joining a workgroup or sub-committee, please If you are interested in joining a workgroup or sub-committee, please submit a request at submit a request at http://www.seg.org/tsc (or let us know now)http://www.seg.org/tsc (or let us know now)

AgendaAgenda

Proposals for new updatesProposals for new updates– SEG-D little-endian samplesSEG-D little-endian samples

Ongoing workOngoing work– SEG-Y 2.0SEG-Y 2.0– SPS 3.0SPS 3.0– EM standard format sub-committeeEM standard format sub-committee– ““Seismic field storage medium Seismic field storage medium

recommendations” workgrouprecommendations” workgroup– ““Storage format recommendation” workgroupStorage format recommendation” workgroup

AOBAOB

Proposed extention of Proposed extention of SEG-DSEG-D

Proposal: Add support for little-endian Proposal: Add support for little-endian samplessamples

Rationale:Rationale:– Modern acquisition system (and processing Modern acquisition system (and processing

systems) mostly uses little-endian CPUssystems) mostly uses little-endian CPUs– Converting to and from big-endian samples costs a Converting to and from big-endian samples costs a

lot of processing time and increases the cost of the lot of processing time and increases the cost of the systemssystems

– Comment: This only really applies to sample Comment: This only really applies to sample formats which maps directly to a CPU data type. formats which maps directly to a CPU data type. Formats like 8015 or 8036 will not benefit much.Formats like 8015 or 8036 will not benefit much.

Proposed extention of Proposed extention of SEG-DSEG-DTechnical proposal:Technical proposal:

Add new series of sample format codes, e.g. Add new series of sample format codes, e.g. 90xx 90xx 9058 = Little-endian 4 byte IEEE float value.9058 = Little-endian 4 byte IEEE float value.

Proposed extention of Proposed extention of SEG-DSEG-D

Questions: Questions:

Is this a good idea?Is this a good idea?

Can this be done as part of current Can this be done as part of current SEG-D rev 3.0? Or do we need a SEG-D rev 3.0? Or do we need a format update?format update?

– The latter requires a longer processThe latter requires a longer process

SEG-Y Rev 2.0SEG-Y Rev 2.0

Stewart Levin (Stewart Levin (salevin@alumni.princeton.edusalevin@alumni.princeton.edu) ) heading teamheading team

Primary current activity of TSCPrimary current activity of TSC Lots of industry interestLots of industry interest Working documentsWorking documents

www.seg.org/tsc - Documents/Format www.seg.org/tsc - Documents/Format Development/SEG-Y/SEG-Y Rev 2.0Development/SEG-Y/SEG-Y Rev 2.0

ForumForumwww.seg.org/tsc Forum/SEG-Y/SEG-Y Revision 2 www.seg.org/tsc Forum/SEG-Y/SEG-Y Revision 2 Working GroupWorking Group

SEG-Y Rev 2.0SEG-Y Rev 2.0

Quick overview from teamQuick overview from team

SPS 3.0SPS 3.0

Team headed by Peter Green Team headed by Peter Green <peter.green@aramco.com><peter.green@aramco.com>

Not much progress since SEG Not much progress since SEG 2012 Las Vegas2012 Las Vegas

Team unfortunately not here to Team unfortunately not here to present statuspresent status

Question: Anyone interested in Question: Anyone interested in joining the team?joining the team?

EM sub-committeeEM sub-committee

Headed by Friedrich Roth Headed by Friedrich Roth ((froth@emgs.com)froth@emgs.com)

Seismic field storage medium Seismic field storage medium recommendationsrecommendations

Group headed by Nils Aatland Group headed by Nils Aatland ((n.s.aatland@fugro.no)n.s.aatland@fugro.no)

Storage Format Storage Format recommendationsrecommendations

Headed by Jill Lewis (Headed by Jill Lewis (jill@troika-jill@troika-int.com)int.com)

AOB?AOB?

Thank you for attending!Thank you for attending!