Practical Well-log StandardsPhase 2Houston

15th February, 2001

NOTEPresentation modified to capture some

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d.camden@flare-consultants.com

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