Well Path Data Transfer Standard ISCWSA Meeting, Dubai, 22 March 2006 John Turvill (Paradigm Geophysical) POSC Regional SIG Meeting,Houston, 22 March 2006.

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Presentation transcript:

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)

Presentation Outline Introduction and Background Uses and Requirements for Well Path data Coordinate reference systems Prior Well Path data formats Well Path data in WITSML 1.3 Proposed additions for WITSML 1.3.n Conclusions

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

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

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.

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

Deviated Well Terminology Vertical Reference Datum e.g: Mean Sea Level, Lowest Astronomical Tide Azimuth Inclination Sidetrack wellbore Well Reference Point e.g: Ground level, Mud line Zero Measured Depth e.g: Rotary table, kelly bushing Zero True Vertical Depth Typically at VRD or ZMD Parent well Acknowledgement: UKOOA P7/2000

Presentation Outline Introduction Uses and Requirements for Well Path data Coordinate reference systems Prior Well Path data formats Proposed additions for WITSML 1.3.n Conclusions

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

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

Presentation Outline Introduction Uses and Requirements for Well Path data Coordinate reference systems Prior Well Path data formats Well Path data in WITSML 1.3 Proposed additions for WITSML 1.3.n Conclusions

Coordinate Reference Systems “Having spent the greater part of the last three months trying to spatially coordinate several disparate data sets, I have no doubt whatever that adoption of an Industry standard for Coordinate Reference Systems is a thoroughly sound proposal” - Matthew Kirkman, Portfolio Manager, Drilling and Well Services Applications, BP and Chairman, WITSML SIG following a presentation to the WITSML SIG recommending adoption of the European Petroleum Survey Group (EPSG) geodetic parameter set

WITSML: Steps to EPSG (OGP) WITSML Version 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

XML Example: wellCRS (Geog) ED50 ED INT

XML Example: wellCRS (Projected and Vertical) ED50 / UTM Zone 31N ED50 / UTM Zone 31N Newlyn Newlyn

XML Example: wellDatum Kelly Bushing KB 78.5 Sea Level SL

Presentation Outline Introduction Uses and Requirements for Well Path data Coordinate reference systems Prior Well Path specifications Well Path data in WITSML 1.3 Proposed additions for WITSML 1.3.n Conclusions

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

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

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

Presentation Outline Introduction Uses and Requirements for Well Path data Coordinate reference systems Prior Well Path data formats Well Path data in WITSML 1.3 Proposed additions for WITSML 1.3.n Conclusions

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 and subsequently Phase 2: Define and implement full life-cycle specifications: to be completed in 2Q2006

Well Path data in WITSML well trajectoryStation trajectory wellCRS acqn. & proc. parameters (>45) location wellbore

obj_well Example 207/29-A6 207/29-A6Z Saltire GBR 207/ Highland Oil ED50 / UTM Zone 31N location of well reference point in proj system …

wellCRS Example (geographic) ED50 ED International 1924 INT

wellCRS Examples (projected, local) UTM31N UTM Zone 31N ED50 / UTM Zone 31N UniversalTransverseMercator 31N WellOneWSP true Grid north 0 true

obj_trajectory Example 207/29-A6 207/29-A6Z Acquisition trajectory # T00:00: Tain Drilling 207/29-A6 207/29-A6Z Acquisition trajectory # T00:00:00 AC Surveys false true

obj_trajectoryStation Example Note: many non-mandatory attributes have been omitted 207/29-A6 207/29-A6Z O ED ED50 / UTM Zone 31N WellOneOffsetOrigin

Presentation Outline Introduction Uses and Requirements for Well Path data Coordinate reference systems Prior Well Path data formats Proposed additions for WITSML 1.3.n Conclusions

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?)

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

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

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 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.

Paul Maton Director, POSC (Europe) 14 Chaucer Avenue Weybridge KT13 0SS U.K phone fax