Geophysics SIG

Work MeetingsHouston, 12 March 2009

Web Conference, 26 March 2009

Energistics Meeting Policies

• Intellectual Property– Participation indicates

agreement to abide– Do not disclose

confidential• Disclosures are

deemed public

– Contributions are made with grant of rights to use, modify, etc.

• Competitive Information– Do not disclose

pricing, costs, sales, plans, schedules, etc.

• Or your participation may be terminated

– If you are uncomfortable regarding such legal matters, leave the meeting and report your concerns.

Meeting Agenda

• Welcome and Introductions • Meeting Objectives• Highlights of the 2008 Study• ONGC Presentation• Topics for Discussion:

– Best practice elaborations– Input to or promotional activities for SEG TSC– Specifications definition– RESQML coordination activities– OGP (Positioning and Survey) Initiative

• Refinement of practical suggestions; discussion of next steps

• Adjourn

Welcome and Introductions

• Welcome and Logistics• Introductions

– Please state• Your name and company• Your current role and responsibilities• Your reasons and expectations for participating

today

Meeting Objectives

• To begin to identify: – work practice improvement opportunities that

can be promoted by the SIG – collaboration opportunities that can be taken

forward by the SIG

• To agree on several high value collaborative activities for the SIG

Energistics

Board of Directors Management & Staff

Advisory CouncilMembership

Other SIGs

Membership and SIGs

RESQML SIG

WITSML SIG

PRODML SIG

Participants

Energistics Standards:WITSML, PRODML, etc.

SIGs are standardsuser communities

Industry Services SIG

Energistics Subject Areas

ReservoirEngineering

ExplGeology

Petrophysics PetroleumEngineering

Drilling

Engineering

ProductionGeology

Production

Engineering

Facilities

Engineering

ProductionOperationsGeophysics

DrillingOperations

Completion &Workover

AssetManagement

ReservoirEngineering

ExplGeology

Petrophysics PetroleumEngineering

Drilling

Engineering

ProductionGeology

Production

Engineering

Facilities

Engineering

ProductionOperationsGeophysics

DrillingOperations

Completion &Workover

SIG

Geophysics SIG SIG SIG

Geology SIG

Asset/DataManagement

SIG

eRegulatory SIG

<<RESQML/RESQML/>>

<<WITSMLWITSML//>>

<<PRODMLPRODML//>>

<<energyMLenergyML//>>

7

Geophysics SIG

• Headlines– Formal assessment study of work

practice improvement opportunities published

– A member review meeting (October)

• Plans– SEG relationship strengthening– RESQML relationship

• Interpretation models

– Presence in India– Identify viable activities for the SIG

• Member meetings (March 12, …)• Recruiting participation

– Collaboration site

GeophSIG

Geophysics

Best Practice Recommendations

• Principles– Life cycle data procedures– Data ownership responsibilities– Sufficient resources to manage data– Use industry standards

• Work Practice Improvement Opportunities– Geodetics and CRS– Service and data acquisition agreements– Data compression– Survey and line names– SEG-Y rev1, SEG-D rev 3, SEG-Y/SEG-D alignment– Integrate position and trace data– Improve logs and reports– Improve trade data evaluations

Highlights of the 2008 Study

• Identifies typical delays in Acquisition, Processing, Interpretation (API) and Data Management life cycle

• Identifies opportunities for improved use of existing and rapid uptake of imminent SEG standards– Recognizes need for greater standardization to enable

geophysics role in Integrated Operations• Recognizes need for collaboration with

SEG and OGP• Outlines guidelines for improved work

practices

Geophysical Activity Number of Opportunities

Cumulative average delays (days)

Acquisition 26 32

Positioning 14 19

Processing 11 6

Interpretation 4 8

Data Management 12 18

Total – all activities 67 83

Energistics Study on Delays

ONGC Presentation – Dr J.V.S.S.N. Murthy

Topics for Discussion

• Geophysical Best practices elaborated• Input to or promotional

activities for SEG TSC• Specifications definition

• RESQML coordination activities

Geophysical Best practices elaborated

• Guiding Principles• Enabling Work Practice Improvements• Routine Work Practice Improvements

Guiding Principles

• Define Life Cycle Data Procedures• Define Ownership Responsibilities • Assign Sufficient Data Resources• Use Available Data Standards

Enabling Work Practice Improvements

• Geodetic and Projected Coordinate Reference Systems

• Service and Acquisition Agreement Templates

• Data Compression Techniques

• Survey and Line Names

• SEG-D revision 3, SEG-Y revision 1

• SEG-Y / SEG-D Alignment

• SEG SPS / SEG-D Alignment Data Management

• Data Management – General Metadata for

data management and auditing

Note: Underlined subjects were high priority on March 12th.

Routine Work Practice Improvements

• Position and Trace Data Integration

• EPSG Geodetic and Projected Coordinate Reference System List Use

• Observer’s Log Use • Position Data and

Survey Report Use

• Processor’s Log Use • Acquisition

Agreement Template Use

• Trade Data Evaluation

• SPS Land 3-D Survey QC

Collaboration with SEG

• Possible inputs or promotional activities – Units of Measure in SEG-D Rev 3– Usage guidelines for SEG-D Rev 3 ?– Promotion of SEG-Y Rev 1, SEG-D Rev

3 ?– Requirements for SEG-Y / SEG-D

alignment ?– Other??

Specifications definition

• Content standard for Observer’s Log• Content standard for Survey Report

(ref OGP)• Content standard for Processing Log• Exchange standard for Velocity Data

– Proposal in hand– Will re-use Energistics XML assets (content and

architecture)

Velocity Function Outline Schema

velocityFunctionSetdocumentInformation seismicSurvey surveyKind (e.g. 2D or 3D) seismicWaveKind indexKind indexUnit coordinateReferenceSystem velocityFunction velocityFunctionID (Choice of (2-D seismic, 3-D seismic, well)) positionTuple seismicDatum (to be clarified) listOf(velocityKind, velocityUnit) VelocityTupleSet indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName indexValue, listOf(velocityValue), reflectorID, horizonName ... ... velocityFunction ... ...

Velocity Function - Issues

• Is there value in using the same XML schema for velocities from wells as from seismic?

• Who will add to the list of velocity types (average, rms, interval, etc.?

• Is there ever a need to mingle velocities for different wave types in one data set?

• What is the meaning of seismicDatum, or Datum Time? Is the seismicDatum always a time, never a depth? (What about in well data?)

• Do we need to handle anisotropy? Now or later? What are the detailed requirements for this?

• The method (algorithm, interpolation technique, manual) by which the velocity function was created should be captured. (Doug Gregory, Chevron, raised at SIG meeting Houston 12 March 2009)

• Others?

Velocity Function – Enumerated Lists

• indexKind: – one-way-time, two-way-time, depth, measured

depth

• surveyKind: – well check-shot, VSP, uphole, 2-D seismic, 3-D

seismic ...

• velocityKind: – average, rms, interval, stacking, migration ...

• seismicWaveKind: – P, S, SH, SV ...

 RESQML coordination activities

• RESQML is the successor to the RESCUE C++ libraries for exchange between Geological (static) and Reservoir Simulation (dynamic) models– RESQML will be compliant with other Energistics ML’s

• Geophysical Interpretations produce structural and property models which provide horizon, fault and other data into Geological and Reservoir models– There is a requirement that the data and meta-data of

the geological objects should be consistently represented at both levels

– Process history and audit data are also needed

OGP (Survey & Positioning) Initiative

• Oil and Gas Producers Association– Have custodianship of former UKOOA and SEG

seismic position data formats and of EPSG Geodetic Dataset

– New Initiative proposes to modernise • P1 (post-processing) position data exchange formats• P2 (pre-processing) position data exchange formats• P6 seismic binning standard • P7 (post-processing, archive) deviated well path data

– Requirements Questionnaire gathering user requirements: results to be presented in April

– Plan to complete revisions by end 2009– SEG D revision 3 will reference ‘current’ PN formats

Practicalities

• Refine suggestions• Recommendations from March 12 Meeting

– General metadata for data management and auditing– Agreement templates by work practice profile– Standard dataset names and identifiers– Processor Log work practice improvements– Velocity function specifications– Coordination with RESQML SIG

• Next steps– Web conference on March 26 at 09:00 Houston, 14:00 UK,

15:00 Europe, 19:30 India– Refinement of proposed collaborative activities into timelines

and calls for participation.

Adjourn

Questions?

Thank You!

More Information from:

Alan Doniger <Alan.Doniger@energistics.org>

Paul Maton <Paul.Maton@ energistics.org>