Technical Overview

1
Technical Overview

• 2002 POSC Fall Conferences
• London 16 October 2002

2
What is WITSML ?

• Standards driven
• XML Specification
• Schema based
• Web-friendly API
• HTTP, SOAP wsdl, XML
• Platform independent
• Broad coverage of wellsite related data
• Location, reports, logs

3
Workflows

• Informal
• Definitive store
• Accumulate / Propagate

4
Data Flow

• Floppy toss
• Create a file
• Exchange file
• Load file
• User provides inter-system interface
• On demand
• Client server architecture
• Store interface (GetFromStore)
• After change
• Sit and wait / Near time
• Subscribe and publish

5
Documents
lt?xml version"1.0"?gt ltwitsmlwellbores
xmlns"http//www.witsml.org/schemas/110"
http//www.witsml.org/schemas/110/obj_wellbore.
xsd"gt ltwellbore uidWell"BHE13"
uidWellbore"BHE13 Hole"gt ltshapegtVerticallt/shape
gt lt/wellboregt ltwellbore uidWell"6507/8-99z"
uidWellbore"6507/8-99z"gt ltshapegtDeviatedlt/shape
gt ltmdKickoff uomftgt1234lt/mdKickoffgt lt/wel
lboregt lt/wellboresgt

• Generic structure
• Data (not well) aggregation
• Object container root
• Object identity
• Object details
• Data scope Drilling operations
• Well, wellbore, rig
• Bha run, cement job, coring, fluids
• Tubular, wellbore geometry
• Ops report
• Formation marker, sidewall core
• Log, mud log
• Survey program, target, trajectory
• Message
• Realtime
• Schema
• Basis for conformance / versioning
• Units
• Follow POSC uom recommendations

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
6
API basics
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

• Store interface
• SOAP rpc
• Get, Add, Delete, Update
• Subscribe / publish
• SOAP subscribe
• HTTP POST publish
• http//AServer/readWitsml....
• Information
• Version, Capability
• Support functionality
• Prototype document and item interfaces

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"
value"40.51"/gt ltchannel nameChannel"rpmAv"
uom"rpm" value"105"/gt ltchannel
nameChannel"tqAv" uom"kftlb" value"13.7"/gt ltch
annel nameChannel"flowInAv" uom"gpm"
value"655"/gt lttypeTriggergtdTimlt/typeTriggergt lt/
realtimegt
7
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

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 ltindexUnits/gt ltlogCurveInfogt
ltmnemonicgtMDEPTHlt/mnemonicgt ltmnemonicgtTIMElt/m
nemonicgt ltmnemonicgtROP_AVGlt/mnemonicgt ltmne
monicgtWOB_AVGlt/mnemonicgt ltmnemonicgtWOB_MAXlt/mn
emonicgt ltmnemonicgtPUMPP_AVGlt/mnemonicgt ltmn
emonicgtPUMPP_MINlt/mnemonicgt ltmnemonicgtPUMPP_MA
Xlt/mnemonicgt lt/logCurveInfogt lt/logHeadergt lt
logData/gt lt/loggt lt/logsgt
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Where next

• http//www.witsml.org/schemas/120

10

• Last slide