WITSML Project Wellsite Information Transfer Standard ML

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WITSML ProjectWellsite Information Transfer
Standard ML
POSC Update, 10 May 2002 Melissa Symmonds,
Schlumberger / WITSML Program Manager
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Current Trends and Factors

• Wells are being drilled faster
• Well targets are becoming more complex
• Need for integration between drillers, geologists
  and reservoir engineers
• Shortage of experts in oil companies and
  service companies
• Geographical factors

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Previous Systems

• WITS Wellsite Information Transfer
  Specification 1980s
• Logs in LIS/LAS/DLIS
• Statoil sponsored Sperry-OpenWorks connection
• Statoil DART also used by BP

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Project Organization

• Sponsors
• BP Statoil
• Participants
• Baker Hughes
• Halliburton/Landmark
• Schlumberger/SIS

• Software Vendor
• NPSi

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WITSML Project Goal

• The right time seamless flow of well site data
  between operators and service companies to speed
  and enhance decision-making.
• DomainDrilling, Completion, Well Services

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Data Transfer
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Project Timeline

• Initiation of Project Oct 2000
• Data Objects defined May 2001
• Working prototype Jul 2001
• Roll-out to Industry Aug 2001
• Data object design finalized Oct 2001

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Project Status

• Current Status
• Statoil testing WITSML API with Landmark Baker
  Hughes in North Sea
• Schlumberger can receive WITSML format and
  testing communication with Landmark
• 3rd parties also developing WITSML based products

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Project Meetings Calgary May 2001
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Project Meetings Austin, Aug 2001
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Major Requirements

• Transfer oilfield data between different vendors
  software systems
• Standard definition of oilfield data objects
• Extensible and self-defining format
• Real-time and batch mode
• Ease of implementation

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Software Design Decisions

• Web Based W3C Standards
• Wide area networking
• cross platform
• XML data formats
• Platform and language independent

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Software Design Decisions

• SOAP for Programming Interface
• Web server based
• Platform and language independent
• API Prototype in MS Visual BASIC
• Aimed at encouraging smaller companies to adopt
  the standard

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Open Sourced Deliverables

• Definition of Data Objects Catalogs
• Example WITSML data files
• Validation tool for WITSML files
• API Implementation
• Documentation

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Data Transfer Sets Defined

• Well
• Units
• Wellbore
• Location Cartographic
• Log
• Real Time Target
• Survey Program
• Trajectory
• Bottom Hole Assembly Run
• Tubulars

• Wellbore Geometry
• Casing Scheme
• Open Hole
• Operations Report
• Fluids Report
• Rig Rig Equipment
• Mud Logging
• Cement Job
• Formation Marker
• Core

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Well Data Object

• ltwitsmlwells xmlnswitsml"http//www.witsml.org/
  schemas/110" xmlnsxsi"http//www.w3.org/2001/XML
  Schema-instance" xsischemaLocation"http//www.wi
  tsml.org/schemas/110 http//www.witsml.org/schemas
  /110/obj_Well.xsd" witsmlversion"1.1.0"gt
• ltwitsmlwell witsmluidWell"W-12"gt
• ltwitsmlnameLegalgtCompany Legal
  Namelt/witsmlnameLegalgt
•   ltwitsmlnumLicensegtCompany License
  Numberlt/witsmlnumLicensegt
•   ltwitsmlnumGovtgtGovt-Numberlt/witsmlnumGo
  vtgt
•   ltwitsmldTimLicensegt2001-05-15T132000.0
  00lt/witsmldTimLicensegt
•   ltwitsmlfieldgtBig Fieldlt/witsmlfieldgt
•   ltwitsmlcountrygtUSlt/witsmlcountrygt
•   ltwitsmlstategtTXlt/witsmlstategt

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API Modules Store Interface

• Store Interface remote access via SOAP
• Defined in WSDL
• GetCap Get server capabilities
• AddToStore Add new objects
• GetFromStore Retrieve objects
• DeleteFromStore Remove objects
• UpdateInStore Update objects
• GetVersion Get API version

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API Modules - Other Interfaces

• Realtime Interface
• Publisher/Subscriber model
• Subscriber can query publisher capabilities
• Data delivered via HTTP POST
• Utility Interfaces internal use on Server
• Document Interface
• Item Interface

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API GetFromStore

• API GetFromStore Query Template
• ltwitsmlwellsgt
• ltwitsmlwell uidWellgt
• ltwitsmlnameLegal /gt
• ltwitsmlnumLicense /gt
• lt/witsmlwellgt
• lt/witsmlwellsgt

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API DeleteFromStore

• API DeleteFromStore Query Template
• ltwellsgt
• ltwell uidWell123/gt
• ltwell uidWell456/gt
• lt/wellsgt

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Web Site

• Web Site www.witsml.org
• Details of object schemas
• Documentation
• Downloadable API implementation
• Feedback discussion

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Future

• Data standard maintained by POSC
• Discussions ongoing
• Integration with PWLS and WellLogML
• New Domains
• Completions and Production
• Initial meeting 18 Oct 2001 in Houston
• More Sponsors
• Other major oil companies have been approached to
  sponsor future development of WITSML

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Problems

• Application Domain Understanding
• Generic API not as intuitive as a more domain
  specific API
• Terminology issues
• SOAP technology tools still developing
• Different SOAP implementations not compatible.
  Microsoft/Sun/Apache APIS
• XML Schema still evolving
• Validation APIs still immature or not available