12.18.1 Wellbore

Topic Version	1	Published	11/11/2016	Topic Change History
For Standard	WITSML v2.0
Type:	Class		Stereotype:	«XSDcomplexType»

Used to capture the general information about a wellbore. This information is sometimes called a "wellbore header". A wellbore represents the path from surface to a unique bottomhole location. The wellbore object is uniquely identified within the context of one well object.

Table 12.18.1-1 Attributes
Name	Type	Notes
AchievedTD	boolean	True ("true" of "1") indicates that the wellbore has acheieved total depth. That is, drilling has completed. False ("false" or "0") indicates otherwise. Not given indicates that it is not known whether total depth has been reached.
DayTarget	TimeMeasure	Target days for drilling wellbore.
DTimKickoff	TimeStamp	Date and time of wellbore kickoff.
IsActive	boolean	`True (="1" or "true") indicates that the wellbore is active. False (="0" or "false") indicates otherwise. It is the servers responsibility to` set this value based on its available internal data (e.g., what objects are changing).
Md	MeasuredDepthCoord	The measured depth of the borehole. If status is plugged, indicates the maximum depth reached before plugging. It is recommended that this value be updated about every 10 minutes by an assigned raw data provider at a site.
MdBit	MeasuredDepthCoord	The measured depth of the bit. If isActive=false then this value is not relevant. It is recommended that this value be updated about every 10 minutes by an assigned raw data provider at a site.
MdKickoff	MeasuredDepthCoord	Kickoff measured depth of the wellbore.
MdPlanned	MeasuredDepthCoord	Planned measured depth for the wellbore total depth.
MdSubSeaPlanned	MeasuredDepthCoord	Planned measured for the wellbore total depth - with respect to seabed.
Number	String64	Operator borehole number.
NumGovt	String64	Government assigned number.
PurposeWellbore	WellPurpose	POSC wellbore purpose.
Shape	WellboreShape	POSC wellbore trajectory shape.
StatusWellbore	WellStatus	POSC wellbore status.
SuffixAPI	String64	API suffix.
Tvd	WellVerticalDepthCoord	The true vertical depth of the borehole. If status is plugged, indicates the maximum depth reached before plugging. It is recommended that this value be updated about every 10 minutes by an assigned raw data provider at a site.
TvdBit	WellVerticalDepthCoord	The true vertical depth of the bit. If isActive=false then this value is not relevant. It is recommended that this value be updated about every 10 minutes by an assigned raw data provider at a site.
TvdKickoff	WellVerticalDepthCoord	Kickoff true vertical depth of the wellbore.
TvdPlanned	WellVerticalDepthCoord	Planned true vertical depth for the wellbore total depth.
TvdSubSeaPlanned	WellVerticalDepthCoord	Planned true vertical depth for the wellbore total depth - with respect to seabed.
TypeWellbore	WellboreType	Type of wellbore.

Table 12.18.1-2 Associations
Association	Notes
From: Wellbore. To: AbstractObject Generalization
From: Wellbore. To: WellPurpose Dependency
From: Wellbore.Well 1..1To: Well Association
From: Wellbore. To: WellboreType Dependency
From: Wellbore. To: WellStatus Dependency
From: Wellbore. To: WellboreShape Dependency
From: Wellbore.ParentWellbore 0..1To: Wellbore Association	This is a pointer to the parent wellbore. No parent = starts from top.
From: Attachment.Wellbore 1..1To: Wellbore Association
From: OpsReport.Wellbore 1..1To: Wellbore Association
From: StimJob.ReferenceWellbore 1..1To: Wellbore Association
From: WellboreCompletion.ReferenceWellbore 1..1To: Wellbore Association
From: FluidsReport.Wellbore 1..1To: Wellbore Association
From: RigUtilization.Wellbore 1To: Wellbore Association
From: ShowEvaluation. To: Wellbore Association
From: StimJob.Wellbore 1To: Wellbore Association
From: Channel. 0..1To: Wellbore Association
From: WellboreMarker.Wellbore 0..1To: Wellbore Association
From: ConvCore.ReferenceWellbore 1..1To: Wellbore Association
From: InterpretedGeology. To: Wellbore Association
From: SidewallCore.ReferenceWellbore 1..1To: Wellbore Association
From: Log.Wellbore 1To: Wellbore Association	Reference to the the wellbore of the log this depth registration image section belongs.
From: Tubular.Wellbore 1..1To: Wellbore Association
From: DepthRegImage.Wellbore 1To: Wellbore Association	Reference to the the wellbore this depth registration image belongs.
From: WellCMLedger.Wellbore 1..1To: Wellbore Association
From: ChannelSet.Wellbore 0..1To: Wellbore Association
From: Trajectory.Wellbore 1..1To: Wellbore Association
From: RigUtilizationTest. 1To: Wellbore Association
From: DownholeString.ReferenceWellbore 1..1To: Wellbore Association
From: Wellbore.ParentWellbore 0..1To: Wellbore Association	This is a pointer to the parent wellbore. No parent = starts from top.
From: WellboreGeology.Wellbore 1To: Wellbore Association
From: BhaRun.Wellbore 1..1To: Wellbore Association
From: CementJob.Wellbore 1..1To: Wellbore Association
From: WellboreMarkerSet.Wellbore 0..1To: Wellbore Association
From: SurveyProgram.Wellbore 1..1To: Wellbore Association
From: WellboreGeometry.Wellbore 1..1To: Wellbore Association
From: DrillReport.Wellbore 1..1To: Wellbore Association
From: MudLogReport.Wellbore 1To: Wellbore Association
From: CuttingsGeology. To: Wellbore Association
From: BoreholeString.ReferenceWellbore 1..1To: Wellbore Association
From: Risk.Wellbore 1..1To: Wellbore Association
From: Target.Wellbore 1..1To: Wellbore Association