SEG Technical Standards Committee Meeting EAGE Conference London 2013 Tuesday Jun 11, 2013 Jill...

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!