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Practical Well-log StandardsPhase 2Houston
15th February, 2001
NOTEPresentation modified to capture some
issues raised at the meetingUse Screenshow Mode. Screen Hyperlinks are red-outline boxes.
Othe navigators appear at screen bottom right
Agenda
09:30 Introduction 09:45 Phase 1 Summary and Analysis 10:45 UK Meeting Report 11:30 Lessons Learned 12:00 Lunch 13:00 Phase 2 Definition/Planning 14:00 Going Forward 15:00 Wrap-up – next meeting
Introduction
David Archer
AgendaEnd
Well-Log Management Business Issues
Data overload Too many curves - users can’t find the important
data
Complex naming Both curve and ‘LOG’ (collection of curves) names
are complex and changing at an ever increasing rate No consistency over time Confusing for experts and generalists alike
No recognized central source for well-log naming standards
End
Data Overload Business Value
Real “Business Value” is concentrated in a relatively small number of data curves - filtered views focus on high value data
Data Volume Business Value
50,000+'Visible'
AcquisitionCurves
1000+?‘Useful’Curves
Category 1
Category 3
Category 2
mapping
Data Overload!Data Overload!
End
Confusing Names
LOG*/Tool Names GRAND SLAM DSI Vs DSST Vs SDT? PEX (HALS) HALS, HDLL, HDIL,
HGNS, HNGS, HRDD, HRGD
PROC1 DAVE21 22MAY97 COMP GEOL
* LOG refers to a collection of curves: for example from a logging acquisition or interpretation process
CURVE Names Sonics: DT1R, DT4P,
DT4S, DT5, DTCR, DTMN, DTRP, DTSD, DTSM, DTHC, DTHU
Densities: RHOZ, NRHB, RHOM, HNRH, HRHO, RHOB, HDEB, HROM
712, 7121, 7122 All Sonics: DT, Densities:
RHOB GR_ED_001_AJB
End
Generalist Specialist
Clear NamesTool
Tool Names: for acquisition data Keep full ‘technical/marketing’ name (information) Generic Tool String Name from component Tool Types (this
is main LOG-level NAME that is understandable to all and will be time-invariant
Specific Tool String Name created by concatenating component tool names (information and searchable)
(Other process stages) standard names for key ‘composite’ and ‘CPI’ data
sets
Purpose: to ‘de-mystify’ proprietary and esoteric naming systems
End
Generic Tool Type AttributeExamples
Tool Type Description
ARES Array ResistivityARIN Array InductionARLL Array LaterologASON Array SonicCAL CaliperCCL Collar LocatorCEM Cement EvaluationDEN DensityDEN.NEU Density/NeutronDIP DipmeterELEM ElementGR GammaIMG Imaging ToolIMGA Imaging Tool - AcousticNEU Neutron Porosity (dual spaced)NEU.NEUP Neutron Porosity/Pulsed NeutronNEUP Pulsed NeutronNMR Nuclear Magnetic ResonancePERF PerforatingPRES PressurePRES.FLOW Pressure/FlowmeterRIN InductionRLL LaterologRLL.RMIC Laterolog/Microresistivity
End
Clear NamesCURVE
CURVES Keep original Mnemonic as CURVE NAME Curve Property Type– Curve Type: generic classifications
which helps user understand purpose and can be used to drive processing
Property Type – based on extending Schlumberger’s original classifications
Curve Type – a ‘short-form’ version of the above based on mnemonic tokens
Property Type and Curve Type map one-to-one DESCRIPTION: a text description of the curve
Curve Types provide an additional context for reducing visual clutter and ordering/structuring enquiries
End
Curve and Property Type AttributeExamples
Curve Type Property Type
Note on Curve Type Structure• Separator improves readability• Hierarchical structure - can set to level of detail required• Structure facilitates searching/listing• Can be treated as a single value (easy to use in existing systems)
AC.AMP. Acoustic_AmplitudeAC.ATT. Acoustic_Attenuation_RateAC.CBL.AMP. CBL_AmplitudeAC.CBL.QUAL. CBL_Quality_IndicatorAC.DTD. Sonic_Data_DensityAC.POR.APP.LIM. Sonic_Porosity_LimestoneAC.POR.APP.SND. Sonic_Porosity_SandstoneAC.SLO.STN. Stoneley_SlownessACCEL. AccelerationACCEL.X. X_AccelerationCAL.AC. Acoustic_CaliperCAL.DIF. Differential_CaliperCON.ARR.IND. Induction_Array_ConductivityCON.ARR.LAT. Laterolog_Array_ConductivityCON.DEP. Deep_Conductivity
End
Phase 1 Deliverables
Standard CURVE level attributes and reference values Business Value
Property and Curve Type
Classification hierarchy
Standard TOOL level attributes and reference values Generic, Technical and Marketing Tool Names
Web-based delivery mechanism
End
Phase 1 Project Management
POSC Multi-company sponsored Project POSC Management Flare Consultants as Technical Contractor
Project Management Steering Group Technical Committee
End
Project Management
Phase 1 consists of:Definition
Phase
Delivery Stage 1
Delivery Stage 2
Delivery Stage 3
End of Phase 1
Dec-2000
3 delivery stages
1 definition phase tool lists and grouping attribute definitions and usages
tools grouped by stage and service company
service companies make initial classifications
service company classifications 'normalised'
TechCom, Steering Group approval and publication
EndAgenda
Lessons Learned
Things always take longerthan expected
Build on existing work – but need to balance ‘legacy’ effects
Main classification issuesare understood and solved
Difficult to get oil companyinvolvement/feedback
Is TechCom – Steering Groupsplit effective?
The project is deemed a success butuptake will be the real test
End
Success Factors
Need enthusiasm to keepProjects moving forward
AgendaEnd
Business Framework and Maintenance are very
important
Communicate results – but ittakes resources
Phase 2 DefinitionParticipation
Acquisition companies: their support is critical Undertake the bulk of the technical work Key to implementation in delivery systems Focus on technical details of acquisition process Baker and Schlumberger have already expressed an
interest Halliburton? Others?
Oil Companies Needed to provide a ‘reality-check’ on deliverables Focus on use of well-log data
End
Phase 2 DefinitionParticipation
Software Vendors Applications that make use of the standards
Data Vendors Standard presentation of products will help
customers Government Agencies
Use of standards in regional/national repositories will facilitate data sharing
End
Phase 2 Definition
Define target customers: Generalist
Tool-level standards Curve definitions for KEY products (Composites, CPIs)
only Specialist
Curve-level standards
End
Phase 2 Definition
Website and Communications
Define user groups/functionality
Define information content
Develop Web interface
Communicate Phase 1 results
Communicate Phase 1 ‘issues’ (non-consistency of
application of standards)
End
Phase 2 Definition
Implementation
Involve application vendors
A database demonstrator (also communication)
DLIS and WellLogML
End
Phase 2 Definition
Additional Classifications Composited (joined) curves
Generalist sets
Interpreted curves Genaralist sets Commercial Packages
Historical acquisition tools Dipmeter/Image tools Formation Pressure tools Core Data Deviation Data (survey and interpolated) Mud Log data VSP
End
Phase 2 Definition
Business and Project Management Sponsorship
Develop business case
Project Management structures
Timelines for deliverables
Open Spirit
End
Maintenance of Phase 1
Current maintenance is ‘self-policing’ Website can be updated by authorised service
company users Current standards are held as (an extendable) look-
up list Question:
Is this sufficient to prevent ‘standards creep’ due to Misapplication of existing standards Arbitrary addition of further classifications
If not, what is the alternative and is it cost-effective?
End
Phase 2 Definition
Maintenance Release ‘moderator’
Release Schedules
Long-term funding
End
Phase 2 Definition
Phase 2 Timing Phase 1 Stages were highly coupled Could deliver Stages more easily if coupling was
minimal: Older technology tools are unlikely to require much
additional technical input Processed and Interpreted products are not strongly
linked to tools Phase 2 is behind Phase 1 in terms of annual cycle.
Should optimise early deliverables before summer holiday season
AgendaENDEnd
London Meeting Participants UK Department of Trade and Industry UK Offshore Operators Association (CDA) Norwegian Petroleum Directorate Baker Hughes British Gas Enterprise Oil Ilex Limited Paradigm PetroData as PGS Phillips Petroleum Shell (UK and Holland) Statoil
London Meeting Outcome
Created a list of potential work items
Discussion and clarification of work items
Feedback after meeting on prioritisation
London Feedback Spreadsheet (ordered)
Agenda
Phase 2 Management
David Archer
Agenda