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Integrated Operations SIG: Distributed Temperature Survey

Integrated Operations SIG: Distributed Temperature Survey. Data Transfer Standard Paul Maton (POSC) POSC SIG Seminar, Delhi, India. Overview. Introduction Summary of the technology Early applications, emerging requirements of DTS in E&P Business drivers for DTS in E&P

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Integrated Operations SIG: Distributed Temperature Survey

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  1. Integrated Operations SIG:Distributed Temperature Survey Data Transfer StandardPaul Maton (POSC) POSC SIG Seminar, Delhi, India

  2. Overview • Introduction • Summary of the technology • Early applications, emerging requirements of DTS in E&P • Business drivers for DTS in E&P • SIG formation and activities • Current status and plans

  3. DTS ‘Box’ DTS ‘Box’ DTS ‘Box’ DTS ‘Box’ Wellhead level Single straight fiber Single straight fiber plusindependent sensor Partially returned fiber or ‘J’ Fully returned fiber or ‘U’ (DTS) Fiber installation patterns in Wellbores

  4. Backscatter spectrum Temperature = f((I+/I-) +…) Rayleigh componentequal to incident wavelength Intensity Anti-Stokescomponent Stronglytemperature dependent Stokescomponent Temperature independent Brillouin bands I- I+ Wavelength Raman bands

  5. Near-real TimeData Server /RTU / … Overview: DTS Data Diagram Supplier Open Standard Client Wellhead Operations Centreand/or Offices DTSML standarddata format DTS proprietary data format Vendor Applications Proprietary Applications Laser Vendor Datastore Proprietary Datastore Backscatter to Temperature converter Partner(s) DTSML Server Proprietary Applications Vendor Applications DTS Box Wellsite Vendor Datastore Proprietary Datastore Optical fiber carrying transmittedand backscattered light Well/Wellbore Operator

  6. Some DTS roles in Production Operations • Routine prduction monitoring • Track normal temperature profile in steady flows. • Measure fow rates with introduced temperature anomaly • Construction and Maintenance • Detect inflows to wellbore thru’ faulty casing • Detect water- or steam-flood break-thoughs • Test wellbore integrity before and after interventions • New applications of a young technology • Pressure sensing • Novel interpretations of temperature anomalies • And more…

  7. Why establish a standard? Manufacturers • Enabler for greater industry use of DTS • Possible applicability in other industries Service companies • Avoids the requirement for customization for each client • Enabler for greater industry use of DTS Operators • Access to data from different service companies • Earlier availability of DTS data for engineering purposes

  8. June ‘04 Proposal • Collaborative design and development of DTS data transmission and exchange standard between DTS system manufacturers, service suppliers and operators • Leverage WITSML architecture, infrastructure (API) and process (SIG) • Evolution and maintenance of public domain standard through POSC Applications and storage of information are out of scope

  9. Deliverables • Definition of data content requirements • Standard vocabulary – map vendor specific terminology to standard. • Analysis of the usability of the candidate technologies (XML, WITSML, OPC). • Revision of the draft XML implementation proposed by BP • based on WITSML, will include schema, stylesheet, sample DTS data, and documentation

  10. DTS Group formation • BP sponsor Richmond meeting (March ’04) • Attendees: BP, Shell, Baker Hughes, Halliburton, POSC, Polarmetrix, Schlumberger, Sensornet, Wood Group • POSC publish project proposal (June ‘04) • Participation established (Sept ’04) • Active: BP, Shell, Halliburton, Schlumberger, Sensornet • Funding (17) and monitoring (3): POSC members of IntOPS SIG

  11. DTS Group Activities • Kick-off Teleconference 21 Sept • Reviewed scope, raised issues (IP, data content, flexibility, XML or OPC?, etc.) • Workgroup at Shell, London, 12 Oct • Reviewed and refined requirements, scope, issues from 21 Sept, received submissions from Halliburton and Shell. • On-going work by SIG Members and POSC staff • Documenting and analysing requirements • Revising XML schemas

  12. Issues - 1 • XML and/or OPC? • DTS Group reviewing status of OPC move from DCOM to XML • Proceeding with DTSML development leveraging BP/BHI and WITSML assets • Reuse of WITSML assets • Leverage data objects such as Well, Wellbore and many components • Flexibility and Extensibility • DTS is a young and evolving technology • Allow some Company specific but identifiable variations

  13. Issues - 2 • Bandwidth constraints • Between wellhead / control center / office • Any of three levels of bandwidth are common: • Low: 9600 baud RTU connection • Low to medium: 64kB to 100MB • High: in the order of GBytes/sec • Need to design for minimal verbosity of XML messages • Data transmission functionalities • Batch and near real-time data access • DTS system and network quality components • Deferred, but future implementations may use WITSML Server capabilities

  14. Requirements - 1 • System installation data • Well and wellbore contextual data • Fiber and ‘DTS box’ contextual data • Permanent and temporary installations • Various fiber installation patterns • Interchange of equipment • Calibration of DTS system and data to wellbore • Determining position of DTS measurements along fiber and in wellbore • Calibrations used to convert Stokes/Anti-Stokes intensity ratio to temperature and apply other corrections • OTDR (Optical Time Domain Reflectometry): self-checking fiber and system functionality

  15. Requirements – 2 • DTS data types • Stokes, anti-Stokes, OTDR, raw Temperature, calibrated Temperature • Routine selection of all or some of the above • Flexible DTS Message Content • Enable selection of calibration, context and temperature types for particular purposes • Need to satisfy transfers between wellsite to office, office to wellsite, and office to office

  16. dtsMessage uidMessage, dTim, …. fiber OTDR wellbore dtsBox 0..n*[Irayleigh] nameWellbore, … mfr, serial#, … mfr, serial#, dTim… temperatures dTim, Stokes,antiStokes, tRaw, tCal Outline DTS Message Data Model Work in Progress well nameWell, field… fiberInWellbore length, mD, dTim… dtsCalibration(s) Attributes

  17. Current Plan • Completed capture and review of first iteration on requirements by end-December • Complete first iteration on specifications by end-January • Complete second iteration on specifications and SIG review by end-February • Industry comment period through March • Publish standard by end-March ‘05

  18. Conclusions • Business case exists for DTS data transfer standard: to benefit of Operators, Service Companies and DTS system manufacturers • Clear, focussed objectives and community of interest established • Requirements, Issues and Resources collected and being analysed • Publication of standard anticipated in March ’05, within 6-months from Kick-off. • Further participation is invited, in active, reviewer and subsequent implementation roles

  19. Thank you for your attention Questions, Please?

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