Download - Presentation Outline Introduction and Background Uses and Requirements for Well Path data
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Well Path Data Transfer Standard
ISCWSA Meeting, Dubai, 22 March 2006 John Turvill (Paradigm Geophysical)
POSC Regional SIG Meeting,Houston, 22 March 2006 Paul Maton (POSC Europe)
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Presentation OutlineIntroduction and Background
Uses and Requirements for Well Path data
Coordinate reference systemsPrior Well Path data formatsWell Path data in WITSML 1.3
Proposed additions for WITSML 1.3.n
Conclusions
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Well Path Objectives
• To produce a unified way of using WITSML Standards to exchange Well Path data, which addresses known requirements throughout its full life-cycle:– Design and Planning– Drilling, Acquisition, initial and subsequent
Processing– Use in other E&P work processes, including
Regulatory reporting– Asset disposal or decommissioning– Iterations within the above work processes
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Approach
• Provide flexible capability for varying needs• Re-use existing WITSML components
– Add (<10) elements identified as needed• Define profiles (subsets) of WITSML which use
the wide optionality in WITSML to satisfy identified user group needs, e.g. for UKOOA P7– Implement profiles using XSLT
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Glossary
• WITSML – the Wellsite Information Transfer Standard Mark-up Language– XML: eXtensible Mark-up Language– XSLT: XML Stylesheet Language Transformation
• Well - A well is a unique surface location from which wellbores are drilled into the Earth for the purpose of either (1) finding or producing underground resources; or (2) providing services related to the production of underground resources.
• Wellbore - A wellbore is a unique, oriented path from the bottom of a drilled borehole to the surface of the Earth. The path must not overlap or cross itself.
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Glossary - 2
• obj_trajectory: the WITSML construct that contains contextual information about the trajectory and the trajectoryStation data items
• obj_trajectoryStation: the WITSML construct that references the containing well, wellbore and trajectory items AND the inclination/azimuth and location data plus much (optional) instrument, acquisition and processing data at each measurement point
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Deviated Well Terminology
Vertical Reference Datume.g: Mean Sea Level, Lowest Astronomical Tide
Azimuth
Inclination
Sidetrack wellbore
Well Reference Pointe.g: Ground level, Mud line
Zero Measured Depthe.g: Rotary table, kelly bushing
Zero True Vertical DepthTypically at VRD or ZMD
Parent well
Acknowledgement: UKOOA P7/2000
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Presentation Outline
IntroductionUses and Requirements for Well
Path dataCoordinate reference systemsPrior Well Path data formats
Proposed additions for WITSML 1.3.n
Conclusions
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Life-Cycle Uses of Well Path Data
• Planning – can result in many well paths, some of which may be drilled– Define intersections with geological and reservoir targets – Originate either from surface or pre-existing wellbores– Ensure safety; avoid collision with existing wells and other
subsurface hazards– Support well engineering design in- or out-of-house – Enable Regulatory permitting– Provide contingent plans in case of anticipated anomalies
• Drilling– Initial Drilling: Geosteering, MWD acquisition and near-real-
time processing– Sharing and integration with specialist wellsite services– Lateral and infill drilling: Tie-in to existing wellbore– Daily reporting
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Life-Cycle Uses of Well Path Data - 2
• E&P Operations– Provision and maintenance of Asset data resources
for users and applications– Static and dynamic reservoir modelling, analysis and
visualisation– Regulatory reporting
• Asset Disposal– Sale, relinquishment, or decommissioning
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Presentation Outline
IntroductionUses and Requirements for Well
Path dataCoordinate reference systemsPrior Well Path data formatsWell Path data in WITSML 1.3
Proposed additions for WITSML 1.3.n
Conclusions
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WITSML: Steps to EPSG (OGP)
• WITSML Version 1.3.1 additions– wellCRS: references EPSG CRS names, codes and
namespace for geographical and projected coordinate systems and geodetic parameters
– wellDatum: references EPSG vertical reference systems
• Further addition – Replicate Generic CRS of P7
• Enable capture and transfer of CRS’s not in EPSG• Draft to be submitted to WITSML SIG TT May 2006
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Presentation Outline
IntroductionUses and Requirements for Well
Path dataCoordinate reference systemsPrior Well Path specificationsWell Path data in WITSML 1.3
Proposed additions for WITSML 1.3.n
Conclusions
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Prior Well Path specifications
• WITS (1980 and subsequently)• LAS version 3 (2000)• UKOOA P7/2000 (2002)
– POSC WellPathML (2003)• Minerals Management Service NTL2004-N03
(2004)• WITSML Version 1.3 (released March 2005)
– Trajectory and Trajectory Station – updated
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Well Path Data Categories• Well, Wellbore identification and context
– Name, Field, Lease/Licence, Basin, Country etc• Survey information and context
– Operator, acquisition and processing contractor(s)– Dates, depth ranges– Survey tools, algorithms, corrections, gravity and magnetic field models,
…• Coordinate Reference System data
– Geographic and projected coordinate systems and transformations
– Vertical datums: permanent and drilling related• Well Path Trajectory and Trajectory Stations
– Measured depth, inclination and azimuth– True vertical depth, geographical, projected and engineering coordinates
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Strengths of UKOOA P7/2000
• Supports multiple contractors, roles and survey phases, including wireline and MWD/LWD
• Supports multiple Vertical Datums and relationships between them
• References EPSG geodetic and coordinate system standards
• Supports post-acquisition life-cycle usages
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Presentation OutlineIntroduction
Uses and Requirements for Well Path data
Coordinate reference systemsPrior Well Path data formatsWell Path data in WITSML 1.3
Proposed additions for WITSML 1.3.n
Conclusions
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Well Path data in WITSML
• Objectives in WITSML V1.3– Extend previous capabilities from WITSML V1.2
for reporting raw measurements to also support planned well paths and calculated well paths
– Reuse WITSML specifications and objects as far as possible
– Two phase process• Phase 1: Reference EPSG and gather full life-cycle Use
cases – done in version 1.3.1 and subsequently• Phase 2: Define and implement full life-cycle
specifications: to be completed in 2Q2006
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Well Path data in WITSML
well
trajectoryStation
trajectory
wellCRS
acqn. & proc. parameters (>45)
location
wellbore
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obj_well Example <wells><well uid=”w1”> <name>207/29-A6</name> <nameLegal>207/29-A6Z</nameLegal> <numGovt>207/29-A6Z</numGovt> <field>Saltire</field> <country>GBR</country> <block>207/29</block> <timeZone>0.00</timeZone> <operator>Highland Oil</operator> <waterDepth uom=”ft” datum=”VRD1”>118.40</waterDepth> <!-- well location: the location of the well reference point --> <wellLocation> <nameWellCRS uidRef=”proj1”>ED50 / UTM Zone 31N</nameWellCRS> <easting uom=”m”>425353.84</easting> <northing uom=”m”>6623785.69</northing> <description>location of well reference point in proj system</description> </wellLocation> …</well></wells>
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obj_trajectory Example<trajectorys> <trajectory uid=”trajacq1” uidWell=”w1” uidWellbore=”wb1”> <nameWell>207/29-A6</nameWell> <nameWellbore>207/29-A6Z</nameWellbore> <name>Acquisition trajectory #1</name> <dTimTrajStart>1972-06-28T00:00:00</dTimTrajStart> <mdMn uom=”ft”>0.</mdMn> <mdMx uom=”ft”>1824.</mdMx> <serviceCompany>Tain Drilling</serviceCompany> </trajectory> <trajectory uid=”trajacq2” uidWell=”w1” uidWellbore=”wb1”> <nameWell>207/29-A6</nameWell> <nameWellbore>207/29-A6Z</nameWellbore> <name>Acquisition trajectory #2</name> <dTimTrajStart>1972-07-09T00:00:00</dTimTrajStart> <serviceCompany>AC Surveys <mdMn uom=”ft”>1915</mdMn> <mdMx uom=”ft”>3584</mdMn> <definitive>false</definitive> <objectGrowing>true</objectGrowing> <final>true</final> </trajectory></trajectorys>
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obj_trajectoryStation Example
Note: many non-mandatory attributes have been omitted
<trajectoryStation uid=”row1”> <nameWell>207/29-A6</nameWell> <nameWellbore>207/29-A6Z</nameWellbore> <typeTrajStation>O</typeTrajStation> <md uom=”ft”>173.09</md> <tvd uom=”ft” datum=”ZTVD1”>173.00</tvd> <tvd uom=”ft” datum=”VRD1”>117.00</tvd> <incl uom=”dega”>2.190</incl> <azi uom=”dega”>292.15</azi> <location> <nameWellCRS uidref=”geog1”>ED50</nameWellCRS> <latitude uom=”dega”>59.74384167</latitude> <longitude uom="dega">1.67197806</longitude> </location> <location> <nameWellCRS uidRef=”proj1”>ED50 / UTM Zone 31N</nameWellCRS> <easting uom=”m”>425353.84</easting> <northing uom=”m”>6623785.69</northing> </location> <location> <nameWellCRS uidRef=”localWell2”> WellOneOffsetOrigin</nameWellCRS> <localX uom=”m”>-12.63</localX> <localY uom=”m”>3.74</localY> </location> </trajectoyStation>
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Presentation Outline
IntroductionUses and Requirements for Well
Path dataCoordinate reference systemsPrior Well Path data formats
Proposed additions for WITSML 1.3.n
Conclusions
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Proposed additions - 1• Coordinate Reference System
– Replicate P7 Generic CRS description• Need 3 additional parameters for Oblique Mercator
• Trajectory life-cycle information– ‘planned’, ‘contingent’, ‘definitive plan’ descriptors for
planned trajectory– ‘surveyed’, ‘interpolated’, ‘estimated’ for measured trajectory– Processing summaries: ‘initial’ and ‘latest’
• Trajectory Station life-cycle information– ‘input’ and ‘interpolated’ descriptors for planned
trajectoryStation– with required parameter sets (TVD, inclination, azimuth,
build and drop rates at and between trajectoryStations)• Rationalise vocabulary for trajectory shapes:
– thesaurus of vendors’ terminologies (longer term?)
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Proposed additions - 2
• Subsetting capability– Define templates to use in sub-setting content required
for particular workflows– Implement templates using XSLT and other (Open
Source?) tools• Error model transfer capability?
– ISCWSA are invited to propose development of a WITSML based exchange specification of published error models
– Work may be coordinated by representatives of companies who are members of both ISCWSA and of WITSML SIG
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Well Path Work Plan – 2Q2006
• Preliminary reviews with interested user parties (SIG Well Path Work Group) ongoing – conclude by end March 2006
• Draft proposal to WITSML TT – by mid-April 2006
• Agree specification in May WITSML meetings• Public review and publication with next release
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Conclusions• WITSML V 1.3 satisfies current drilling data
transfers– V1.3.0 was released in March 2005; V1.3.1 (mostly bug
fixes) released January 2006– V1.3.1 based commercial products anticipated during
2006.• WITSML’s Well Path usage will satisfy full life-cycle
data transfers– Will be a view of the overall path from surface to TD– Proposed to use existing WITSML components with a
few additions/modifications and an XSLT (tool-based) sub-setting process.
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Paul MatonDirector, POSC (Europe)
14 Chaucer AvenueWeybridgeKT13 0SS
U.K.
+44 1932 828794 phone+44 1932 831756 fax
[email protected]://www.posc.org