Technical Overview

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Technical Overview

• 2002 POSC Fall Conferences
• November 20, Houston, TX

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What is WITSML ?

• Set of data objects
• Defined in XML (schemas driven)
• Broad coverage of wellsite related data
• Location, reports, logs, trajectory
• Web-friendly API
• Programmatic interface for data exchange

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What is WITSML ?

• Standards driven (W3C)
• XML xsd, HTTP, SOAP wsdl
• Platform and language independent
• Built from existing and emerging work
• Designed to support drilling workflows

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Workflows

• Informal
• Definitive store
• Accumulate / Propagate

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Data Flow

• Floppy toss
• Create, exchange, load file
• User provides inter-system interface
• On demand (pull model)
• Client / server architecture
• Store interface (GetFromStore)
• Sit and wait (push model)
• Subscribe publish interfaces

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WITSML Objects

• Well / Wellbore
• Trajectory
• Logs
• Real Time
• Wellbore Geometry
• Tubulars
• Operations Report
• Target
• BHA Run

• Survey Program
• Fluids Report
• Rig / Rig Equipment
• Mud Logging
• Cement Job
• Formation Marker
• Core
• Message
• Etc.

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WITSML Documents

• Generic structure
• Data (not well) aggregation
• Object container root
• Object identity
• Object details
• Schema
• Basis for conformance / versioning
• Units
• Follow POSC uom recommendations
• witsmlDict.xml for v1.2

lt?xml version"1.0"?gt ltwellbores
xmlns"http//www.witsml.org/schemas/110"gt ltwel
lbore uidWellW-13" uidWellboreB-39"gt ltshapegt
Verticallt/shapegt lt/wellboregt ltwellbore
uidWell"6507/8-99z" uidWellbore"6507/8-99z"gt lt
shapegtDeviatedlt/shapegt ltmdKickoff
uomftgt1234lt/mdKickoffgt lt/wellboregt lt/well
boresgt
ltxsdcomplexType name"obj_wellbore"gt ltxsdseque
ncegt ltxsdelement name"parentWellbore"
type"str64" minOccurs"0" /gt ltxsdelement
name"shape" type"WellboreShape" minOccurs"0"
/gt ltxsdelement name"mdKickoff"
type"standardDepthIndex" minOccurs"0" /gt
  ltxsdelement name"commonData"
type"cs_commonData" minOccurs"0" /gt
ltxsdelement name"customData"
type"cs_customData" minOccurs"0" /gt  
lt/xsdsequencegt   ltxsdattribute name"uidWell"
type"str64" use"required" /gt   ltxsdattribute
name"uidWellbore" type"str64" use"required" /gt
  lt/xsdcomplexTypegt   lt/xsdschemagt
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API Basics

• Store Interface
• SOAP rpc
• Get, Add, Delete, Update
• Subscribe / Publish
• SOAP subscribe
• HTTP POST publish
• Information
• Version, Capability

ltoperation name"WMLS_GetFromStore"
parameterOrder"strWMLtypeIn strSelectionsIn
strOptionsIn strCapabilitiesIn strXMLout
strSuppMsgOut"gt ltinput message"wsdlnsStore.WMLS
_GetFromStore"/gt ltoutput message"wsdlnsStore.WM
LS_GetFromStoreResponse"/gt lt/operationgt
ltmessage name"Publish.WMLP_Subscribe"gt ltpart
name"strSubscriptionIn" type"xsdstring"/gt ltpar
t name"strOptionsIn" type"xsdstring"/gt ltpart
name"strSubscriptionOut" type"xsdstring"/gt ltpa
rt name"strSuppMsgOut" type"xsdstring"/gt lt/mess
agegt
ltrealtime uidWell"W-12" uidWellbore"B-01"gt ltdTi
mgt2001-07-15T153000.000lt/dTimgt ltmd
uom"ft"gt10000lt/mdgt lttvd witsmluom"ft"gt9000lt/tv
dgt ltactivityCodegtDRILLINGlt/activityCodegt ltinterv
algt1lt/intervalgt ltuomIntervalgtminlt/uomIntervalgt lt
typeIntervalgtSpotSamplelt/typeIntervalgt ltchannel
nameChannel"ropAv" uom"ftPhr"
value5.1"/gt ltchannel nameChannel"rpmAv"
uom"rpm" value"105"/gt ltchannel
nameChannel"tqAv" uom"kftlb" value"13.7"/gt ltty
peTriggergtdTimlt/typeTriggergt lt/realtimegt
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Query templates

• WITSML documents
• Define content
• Specify constraints (AND)
• Request units

lt?xml version"1.0" encoding"UTF-8"?gt ltwellbores
xmlns"http//www.witsml.org/schemas/110"gt
ltwellbore uidWell"W-1" uidWellbore"B-1"gt
ltparentWellbore/gt ltnumber/gt
ltsuffixAPI/gt ltpurposeWellbore/gt
lttypeWellbore/gt ltshape/gt
ltdTimKickoff/gt ltmdCurrent
uomft/gt lt/wellboregt lt/wellboresgt
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Query templates (log)

• Controlling data volume for log, mudlog,
  trajectory

lt?xml version"1.0" encoding"UTF-8"?gt ltlogs
xmlns"http//www.witsml.org/schemas/110"gt ltlog
uidWell"6507/7-A-31" uidWellbore""
uidLog"DRILLDEPTHBIT-1-0"gt ltlogHeadergt ltserv
iceCompany/gt ltrunNumber/gt ltcreationDate/gt
ltindexType/gt ltstartIndexgt1200lt/startIndexgt
ltendIndex/gt ltindexUnitsgtftlt/indexUnitsgt ltlog
CurveInfogt ltmnemonicgtMDEPTHlt/mnemonicgt lt/lo
gCurveInfogt ltlogCurveInfogt ltmnemonicgtROP_AV
Glt/mnemonicgt ltunitgtft/hlt/unitgt lt/logCurveIn
fogt ltlogCurveInfogt ltmnemonicgtHKLD_AVGlt/mnem
onicgt ltunitgtklbflt/unitgt lt/logCurveInfogt lt
/logHeadergt ltlogData/gt lt/loggt lt/logsgt
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Where next

• http//www.witsml.org/schemas/120

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• Last slide