integrated operations sig: distributed temperature survey
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Integrated Operations SIG: Distributed Temperature Survey. Data Transfer Standard: Update Houston 12 May 2006 Paul Maton and John Bobbitt (POSC). Overview. Introduction Summary of the technology Early applications, emerging requirements of DTS in E&P Business drivers for DTS in E&P - PowerPoint PPT PresentationTRANSCRIPT
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Integrated Operations SIG:Distributed Temperature Survey
Data Transfer Standard: UpdateHouston 12 May 2006
Paul Maton and John Bobbitt (POSC)
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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
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DTS proprietary data format
Well/Wellbore
Backscatter to Temperature
converter Near-real TimeData
Server /RTU / …
Vendor Datastore
Vendor Applications
Proprietary Datastore
Proprietary Applications
Partner(s)
Wellsite
Operations Centreand/or Offices
WITSML standard
data format
Overview: DTS Data Diagram
Vendor Datastore
Vendor Applications
Proprietary Datastore
Proprietary Applications
Operator
Wellhead
Optical fiber carrying transmittedand backscattered light
WITSML adaptor
Laser
DTS Box
Supplier Open Standard Client
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Backscatter spectrum
Stokescomponent
Temperature independent
Raman bands Wavelength
Intensity
Brillouin bands
Rayleigh componentequal to incident wavelength
Anti-Stokescomponent
Stronglytemperature
dependent
Temperature = f((I+/I-) +…)
I- I+
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Deliverables
• Definition of data content requirements• Standard vocabulary and thesaurus of
vendor specific terminology to standard• Analysis of the usability of the
candidate technologies (XML, WITSML, OPC)
• Was released as part of WITSML v1.3.1– includes schema, stylesheet, sample DTS
data, and documentation
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Resources
• BP / Baker initial DTS schema• Shell DTS Primer• Service company publications and data• WITSML specifications – particularly
alignment with WITSML 1.3
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Issues - 1
• XML and/or OPC?– DTS Group reviewed status of OPC migration from
COM to XML– Selected XML development leveraging BP/BHI and
WITSML assets
• Reuse of WITSML assets– Leverage data objects such as Well, Wellbore and
wellLog in addition to architecture and data types
• Flexibility and Extensibility– DTS is a young and evolving technology– Standard must not constrain innovation
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Issues - 2• Bandwidth constraints
– Between wellhead / control center / office– Any of three levels of bandwidth are common in the
oilfield:• 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– Network integrity and quality of service monitoring– Deferred, but future implementations may use WITSML
Server capabilities
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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
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Requirements – 2
• DTS data types– Stokes, anti-Stokes, OTDR, raw
Temperature, calibrated Temperature
– Routine ability to select 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
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(DTS) Fiber configuration patterns
Single straight fiber
Single straight fiber plusindependent sensor
Partially returned fiber or ‘J’
Fully returned fiber or ‘U’
Wellhead level
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DTS Data Model
dtsInstalledSystem
id, dTim, ….
instrumentBoxInformation
mfr, serial#, dTim…
dtsCalibration
(Name, value) pairs
OTDR
0..n*[Rayleigh]
fiber
mfr, serial#, …
fiberInformation
length, mD, dTim…
wellbore
nameWellbore, …
well
nameWell, field…
instrumentBox
mfr, serial#, dTim…
wellboreFiberSchematic
lAF,mD, type
wellLog
lAF, Stokes,antiStokes, tRaw, tCal
dtsIMeasurement
id, dTim, ….
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DTS Features: 1
• Flexibility – allow evolution of technology– fiber and instrumentBox are independent of
E&P application– location in wellbore in terms of
lengthAlongFiber and measuredDepth with reference points such as baseTubingHangerFlange
– WITSML:WellLog used to transfer temperature and fiber self-test (OTDR) profiles
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DTS Features: 2
• Re-using WITSML schemas and architecture – Well, wellbore objects– Log with flexible table structure– Many data types, and elements– Composite schema to enable use
independently of WITSML server
• Adding DTS specific sub-schemas and elements
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DTS Features: 3
• Documentation Package– Addresses 3 audiences:
• Petroleum Engineers and Geoscientist end-users, Data Managers, Software Engineers
– XML Schemas and Style sheets– Sample XML– Shell DTS Primer
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fiber.xml<?xml version="1.0" encoding="UTF-8"?><!-- Standalone description of a fiber Note that this is an example only, and may not actually exist --><fiber id="fiberExample1" xmlns="http://www.witsml.org/dts" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.witsml.org/dts ../obj_dts.xsd">
<name>Example Fiber One</name><type>50/125 multimode</type><coating>gold</coating><jacket>hytrel</jacket><diameter uom="um">900</diameter><refractiveIndex>1.4976</refractiveIndex><oneWayLoss uom="dB/km">.18</oneWayLoss><spoolNumberTag>12345AA4</spoolNumberTag><spoolLength uom="m">10000</spoolLength><manufacturingDate>1965-03-08</manufacturingDate><manufacturer>Corning</manufacturer>
</fiber>
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dtsMeasurement
<dtsMeasurement uidWell="D88CA733F" uidWellbore="82996A3B" uid="1FO19-120050603-1">
<nameWell>1FO19</nameWell><nameWellbore>1FO19-1</nameWellbore><name>Wellbore 1FO19-1 measurement 8Oct2005</name><runDuration uom="s">600</runDuration><installedSystemUsed uidRef="1FO19-1-1">Hole 1FO19-1
installation 1</installedSystemUsed><dataInWellLog uidRef="8CA290B22">Wellbore 1FO19-1
measurement 8Oct2005</dataInWellLog><fiberEndConnected uidRef="A6">C-1</fiberEndConnected><fiberDefinedPoint uid="I2">
<lengthAlongFiber uom="m">127</lengthAlongFiber><type>wellhead junction box</type>
</fiberDefinedPoint></dtsMeasurement>
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Calibration data
<wellLog uid="1FO19-dts1"> <name>DT001</name> <serviceCompany>DTS Company X</serviceCompany> <creationDate>2004-06-11T20:12:15</creationDate> <indexType>length</indexType> <logParam index="1" name="first parameter">YYYY</logParam> <logParam index="1" name="third parameter">true</logParam> <logParam index="1" name="fourth parameter">492.2</logParam> … <logParam index="1" name="eighth parameter" uom="db/km">0.269</logParam> <logParam index="1" name="tenth parameter" uom="degC">12.2</logParam> <logParam index="2" name="tenth parameter" uom="degC">13.3</logParam> <logParam index="1" name="calculation method">DTS Company X internal</logParam> <logParam index="1" name="calculation method version">1.1</logParam> …
Calibration data are described in self-defining structures
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Temperature curve information<logCurveInfo uid="LAF">
<mnemonic>LAF</mnemonic><classWitsml>length along fiber</classWitsml><unit>m</unit><curveDescription>length along the fiber, with zero point where the fiber
emerges from the instrument box.</curveDescription></logCurveInfo><logCurveInfo uid="TEMP">
<mnemonic>TEMP</mnemonic><classWitsml>DTS temperature</classWitsml><unit>degC</unit><curveDescription>Calculated temperature value, after
corrections.</curveDescription></logCurveInfo>
<logCurveInfo uid="ST"><mnemonic>ST</mnemonic><classWitsml>Stokes intensity</classWitsml><curveDescription>Summed value of the stokes
frequency</curveDescription></logCurveInfo><logCurveInfo uid="AST">
<mnemonic>AST</mnemonic><classWitsml>anti-Stokes intensity</classWitsml><curveDescription>Summed value of the anti-stokes
frequency</curveDescription></logCurveInfo>
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Temperature Data in wellLog format
</wellLog>…<logData>
<data id="1">8.776,27.51,2469381.354,1901640.98</data><data id="1">9.278,27.005,2320534.5,1782170.336</data><data id="1">9.78,26.505,2192484.861,1679296.566</data><data id="1">10.281,25.102,2122306.103,1613174.898</data><data id="1">10.783,24.529,2094591.895,1587087.951</data><data id="1">11.285,24.295,2085332.057,1578006.606</data><data id="1">11.787,24.322,2082312.362,1575909.093</data><data id="1">12.289,24.304,2082709.971,1576001.859</data><data id="1">12.791,24.358,2082038.717,1575914.364</data><data id="1">13.293,24.332,2077303.063,1572056.944</data><data id="1">13.795,24.307,2066563.314,1563676.817</data><data id="1">14.296,24.076,2053080.526,1551465.609</data><data id="1">14.798,23.936,2039563.062,1540018.394</data>
</logData></wellLog>
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Current Status
• Published as integrated part of WITSML v1.3.1
• First non-drilling member of WITSML family of standards
• Promote and support implementation(s) in 2005 - 2006
• Use feedback from implementations to iterate on specification as needed in 2006
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POSC DTS Standards in Shell
Martijn HooijmeijerLinda Dodge
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Why Shell Contributes
• Fits into Shell Data Architecture Standards
• Data handling and processing independent of DTS hardware vendors allows global standards, reduces interfaces
• Standard interfaces facilitate usage of best in class visualisation, interpretation and monitoring tools
POSC DTS Standards in Shell
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What Shell has contributed
• Shell DTS Primer (a foundational document for the WITSML DTS definition)
• Integration expertise • DTS Expertise• Stimulating vendors to implement and
comply with WITSML DTS
POSC DTS Standards in Shell
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Office Domain
Distributed Data DB
XML ?
XML (?)
ClientSoftware
Envisioned DTS Architecture
POSC DTS Standards in Shell
Process Control Domain
Storage requiredfor 72 hours
Data to be sent inPOSC DTS ML Exchange format.
TemporaryStorage
DTSHardware
XML / OPC
•Transfer raw data: (unscaled) Stokes / anti-Stokes data • Transfer temperature traces• Transfer other distributed data• Flexible header that may include parameters relating to Light box, Fiber, and Well details.• Transfer installation / hardware configuration (either as an “extended” header of regular message, or as separate message, with preference for the prior).
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Shell’s plans
• A DTS data handling architecture has been designed around the WITSML DTS, including Oracle DTS Database
• First application using WITSML DTS due to be up and running in Q4 this year: will probably generate change requests
• Continue working with all our DTS vendors to have their devices export WITSML DTS
POSC DTS Standards in Shell
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BP: dts summary• Initiated external collaboration amongst DTS
service providers and operator community to establish industry standard data format.
• Active participation in Integrated Operations SIG to develop data specification requirements based on experience from prototype XML schema developed by BP.
• Proven the application of DTS data transmission via XML through a BP developed schema prototype. This prototype was implemented as an interim solution prior to the release of the industry standard format.
• We are committed to the development and application of an industry standard that will be held by POSC .
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Conclusions• Business case exists for DTS data transfer
standard: with benefits to Operators, Service Companies and DTS system manufacturers
• Clear, focussed objectives and community of interest established
• Requirements, Issues and Resources collected, analysed, draft schemas and documentation reviewed by DTS Workgroup, WITSML technical team and Industry
• Published as first non-drilling extension of WITSML family of standards in Jan 2006.
• Operational implementation(s) planned and proceeding
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More information from
Paul Maton [email protected]: +44 1932 828794
John Bobbitt [email protected]: +1 713 267 5174