Documentation for obj_object_profiled_data_schema

Complex Type: cs_wellDatum

[Table of contents]

Super-types: None
Sub-types: None
Name cs_wellDatum
Used by (from the same schema document) Complex Type cs_wellContext
Abstract no
Documentation Defines the datums associated with elevation, vertical depth and measured depth coordinates within the context of a well.
XML Instance Representation
<...
defaultMeasuredDepth=" witsml:logicalBoolean [0..1]

'True indicates that this is the default reference datum for measured depth coordinates. False or not given indicates that this is not the default reference datum. Measured depth coordinates that do not specify a datum reference should be assumed to be measured relative to this default reference datum. Only one reference datum may be designated as the default measured depth datum for each well. Values are \"true\" (or \"1\") and \"false\" ( or \"0\").'

"

defaultVerticalDepth=" witsml:logicalBoolean [0..1]

'True indicates that this is the default reference datum for vertical depth coordinates. False or not given indicates that this is not the default reference datum. Vertical depth coordinates that do not specify a datum reference should be assumed to be measured relative to the default reference datum. Only one reference datum may be designated as the default vertical depth datum for each well. Values are \"true\" (or \"1\") and \"false\" ( or \"0\").'

"

defaultElevation=" witsml:logicalBoolean [0..1]

'True indicates that this is the default reference datum for elevation coordinates. False or not given indicates that this is not the default reference datum. Elevation coordinates that do not specify a datum reference should be assumed to be measured relative to the default reference datum. Only one reference datum may be designated as the default elevation datum for each well. Values are \"true\" (or \"1\") and \"false\" ( or \"0\").'

"

uid=" witsml:uidString [0..1]

'The unique identifier of a container element. This attribute is generally required within the context of a WITSML server. There should be no assumption as to the semantic content of this attribute. This should only be used with recurring container types (i.e., maxOccurs greater than one). The value is only required to be unique within the context of the nearest recurring parent element.'

"
>
<witsml:name> witsml:nameString </witsml:name> [0..1]

'The human understandable contextual name of the reference datum.'

<witsml:code> witsml:ElevCodeEnum </witsml:code> [0..1]

'The code value that represents the type of reference datum. This may represent a point on a device (e.g., kelly bushing) or it may represent a vertical reference datum (e.g., mean sea level).'

<witsml:datumName> witsml:wellKnownNameStruct </witsml:datumName> [0..1]

'The name of the vertical reference datum in a particular naming system. This should only be specified if the above \'code\' represents some variation of sea level. An optional short name (code) can also be specified. Specifying a well known datum is highly desired if the above code is a variant of sea level because sea level varies over time and space. An example would be to specify a name of \'Caspian Sea\' with a code of \'5106\' in the \'EPSG\' naming system.'

<witsml:kind> witsml:kindString </witsml:kind> [0..*]

'Since various activities may use different points as measurement datums, it is useful to characterize the point based on its usage. A well reference datum may have more than one such characterization. For example, it may be the datum used by the driller and logger for measuring their depths. Example usage values would be \'permanent\',\'driller\', \'logger\' \'WRP\' (well reference point) and \'SRP\' (site reference point).'

<witsml:wellbore> witsml:cs_refWellWellbore </witsml:wellbore> [0..1]

'A pointer to the wellbore that contains the reference datum. This should be specified if a measured depth is given.'

<witsml:rig> witsml:cs_refWellWellboreRig </witsml:rig> [0..1]

'A pointer to the rig that contains the device used as a reference datum. The rig may be associated with a wellbore in another well (e.g., pattern drilling using a rig on a track).'

<witsml:elevation> witsml:wellElevationCoord </witsml:elevation> [0..1]

'The gravity based elevation coordinate of this reference datum as measured from another datum. Positive moving upward from the elevation datum. An elevation should be given unless this is a vertical reference datum (e.g., sea level).'

<witsml:measuredDepth> witsml:measuredDepthCoord </witsml:measuredDepth> [0..1]

'The measured depth coordinate of this reference datum as measured from another datum. The measured depth datum should either be the same as the elevation datum or it should be relatable to the elevation datum through other datums. Positive moving toward the bottomhole from the measured depth datum. This should be given when a local reference is \"downhole\", such as a kickoff point or ocean bottom template, and the borehole may not be vertical. If a Depth is given then an Elevation should also be given.'

<witsml:comment> witsml:commentString </witsml:comment> [0..1]

'A contextual description of the well reference datum.'

</...>
Diagram
h-269201247 h-2046685877 h109044400 h-399087894 h1814974341 h557385547 h-456498133 h-327397763 h-793122037 h2055323524 h2055323524 h2055323524 h-1931220815
Schema Component Representation
<xsd:complexType name="cs_wellDatum">
<xsd:sequence>
<xsd:element name="name" type=" witsml:nameString " minOccurs="0" maxOccurs="1"/>
<xsd:element name="code" type=" witsml:ElevCodeEnum " minOccurs="0" maxOccurs="1"/>
<xsd:element name="datumName" type=" witsml:wellKnownNameStruct " minOccurs="0" maxOccurs="1"/>
<xsd:element name="kind" type=" witsml:kindString " minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="wellbore" type=" witsml:cs_refWellWellbore " minOccurs="0" maxOccurs="1"/>
<xsd:element name="rig" type=" witsml:cs_refWellWellboreRig " minOccurs="0" maxOccurs="1"/>
<xsd:element name="elevation" type=" witsml:wellElevationCoord " minOccurs="0" maxOccurs="1"/>
<xsd:element name="measuredDepth" type=" witsml:measuredDepthCoord " minOccurs="0" maxOccurs="1"/>
<xsd:element name="comment" type=" witsml:commentString " minOccurs="0" maxOccurs="1"/>
</xsd:sequence>
<xsd:attribute name="defaultMeasuredDepth" type=" witsml:logicalBoolean " use="optional"/>
<xsd:attribute name="defaultVerticalDepth" type=" witsml:logicalBoolean " use="optional"/>
<xsd:attribute name="defaultElevation" type=" witsml:logicalBoolean " use="optional"/>
<xsd:attributeGroup ref=" witsml:attgrp_uid "/>
</xsd:complexType>