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Used by
Element witsml:ChannelMetadata / witsml:ChannelState
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
Defines where the channel gets its data from, e.g., calculated from another source, or from archive, or raw real-time, etc.
Diagram
DiagramLog_xsd_Simple_Type_witsml_ChannelState.tmp#ChannelState
Type witsml:ChannelState
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
enumeration calculated 
Calculated from measurements
enumeration final 
Considered final and not subject to change
enumeration memory 
Sensor data is recorded into downhole memory of a tool, rather than transmitting in "real time" to surface.
enumeration processed 
Results of calculations based on measurements
enumeration real time 
Measurements at the actual time.
Source
 
<xs:element name="ChannelState" type="witsml:ChannelState" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>Defines where the channel gets its data from, e.g., calculated from another source, or from archive, or raw real-time, etc.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:TimeDepth
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
Is this a time or depth log?
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_String64.tmp#String64
Type eml:String64
Type hierarchy
Properties
content simple
minOccurs 1
maxOccurs 1
Facets
maxLength 64
Source
 
<xs:element name="TimeDepth" type="eml:String64" minOccurs="1" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>Is this a time or depth log?</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:ChannelClass
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
A mandatory value categorizing a log channel. The classification system used in WITSML is the one from the PWLS group.

NOTE: This should turn into an extensible enumeration before WITSML is released.
Diagram
DiagramObjectReference_xsd_Complex_Type_eml_DataObjectReference.tmp#DataObjectReference_ContentTypeObjectReference_xsd_Complex_Type_eml_DataObjectReference.tmp#DataObjectReference_TitleObjectReference_xsd_Complex_Type_eml_DataObjectReference.tmp#DataObjectReference_UuidObjectReference_xsd_Complex_Type_eml_DataObjectReference.tmp#DataObjectReference_UuidAuthorityObjectReference_xsd_Complex_Type_eml_DataObjectReference.tmp#DataObjectReference_UriObjectReference_xsd_Complex_Type_eml_DataObjectReference.tmp#DataObjectReference_VersionStringObjectReference_xsd_Complex_Type_eml_DataObjectReference.tmp#DataObjectReference
Type eml:DataObjectReference
Properties
content complex
minOccurs 1
maxOccurs 1
Model
Children eml:ContentType, eml:Title, eml:Uri, eml:Uuid, eml:UuidAuthority, eml:VersionString
Instance
 
<witsml:ChannelClass xmlns:witsml="http://www.energistics.org/energyml/data/witsmlv2" xmlns:eml="http://www.energistics.org/energyml/data/commonv2">
  <eml:ContentType>{1,1}</eml:ContentType>
  <eml:Title>{1,1}</eml:Title>
  <eml:Uuid>{1,1}</eml:Uuid>
  <eml:UuidAuthority>{0,1}</eml:UuidAuthority>
  <eml:Uri>{0,1}</eml:Uri>
  <eml:VersionString>{0,1}</eml:VersionString>
</witsml:ChannelClass>
Source
 
<xs:element name="ChannelClass" type="eml:DataObjectReference" minOccurs="1" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>A mandatory value categorizing a log channel. The classification system used in WITSML is the one from the PWLS group. NOTE: This should turn into an extensible enumeration before WITSML is released.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:RunNumber
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
The nominal run number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included. 

The value here should match a bit run number for LWD data and a wireline run number for logging data.
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_String64.tmp#String64
Type eml:String64
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
Source
 
<xs:element name="RunNumber" type="eml:String64" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>The nominal run number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included. The value here should match a bit run number for LWD data and a wireline run number for logging data.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:PassNumber
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
The nominal pass number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included. 

The value here should match a wireline pass number for logging data.
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_String64.tmp#String64
Type eml:String64
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
Source
 
<xs:element name="PassNumber" type="eml:String64" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>The nominal pass number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included. The value here should match a wireline pass number for logging data.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:StartIndex
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
When the log header defines the direction as "Increasing", the startIndex is the starting (minimum) index value at which the first non-null data point is located. When the log header defines the direction as "Decreasing", the startIndex is the starting (maximum) index value at which the first non-null data point is located.
Diagram
DiagramLog_xsd_Complex_Type_witsml_AbstractIndexValue.tmp#AbstractIndexValue
Type witsml:AbstractIndexValue
Properties
content complex
minOccurs 0
maxOccurs 1
Model
Source
 
<xs:element name="StartIndex" type="witsml:AbstractIndexValue" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>When the log header defines the direction as "Increasing", the startIndex is the starting (minimum) index value at which the first non-null data point is located. When the log header defines the direction as "Decreasing", the startIndex is the starting (maximum) index value at which the first non-null data point is located.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:EndIndex
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
When the log header defines the direction as "Increasing", the endIndex is the ending (maximum) index value at which the last non-null data point is located. When the log header defines the direction as Decreasing, the endIndex is the ending (minimum) index value at which the last non-null data point is located.
Diagram
DiagramLog_xsd_Complex_Type_witsml_AbstractIndexValue.tmp#AbstractIndexValue
Type witsml:AbstractIndexValue
Properties
content complex
minOccurs 0
maxOccurs 1
Model
Source
 
<xs:element name="EndIndex" type="witsml:AbstractIndexValue" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>When the log header defines the direction as "Increasing", the endIndex is the ending (maximum) index value at which the last non-null data point is located. When the log header defines the direction as Decreasing, the endIndex is the ending (minimum) index value at which the last non-null data point is located.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:LoggingCompanyName
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
Name of the logging company.
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_String64.tmp#String64
Type eml:String64
Type hierarchy
Properties
content simple
minOccurs 1
maxOccurs 1
Facets
maxLength 64
Source
 
<xs:element name="LoggingCompanyName" type="eml:String64" minOccurs="1" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>Name of the logging company.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:LoggingCompanyCode
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
The RP66 organization code assigned to a logging company. The list is available at http://www.energistics.org/geosciences/geology-standards/rp66-organization-codes
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_String64.tmp#String64
Type eml:String64
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
Source
 
<xs:element name="LoggingCompanyCode" type="eml:String64" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>The RP66 organization code assigned to a logging company. The list is available at http://www.energistics.org/geosciences/geology-standards/rp66-organization-codes</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:ToolName
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
Name of the logging tool as given by the logging contractor.
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_String64.tmp#String64
Type eml:String64
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
Source
 
<xs:element name="ToolName" type="eml:String64" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>Name of the logging tool as given by the logging contractor.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:ToolClass
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
A value categorizing a logging tool. The classification system used in WITSML is the one from the PWLS group.

NOTE: This should turn into an extensible enumeration before WITSML is released
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_String64.tmp#String64
Type eml:String64
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
Source
 
<xs:element name="ToolClass" type="eml:String64" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>A value categorizing a logging tool. The classification system used in WITSML is the one from the PWLS group. NOTE: This should turn into an extensible enumeration before WITSML is released</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:Derivation
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
Indicates that the channel is derived from one or more other channels
Diagram
DiagramLog_xsd_Simple_Type_witsml_ChannelDerivation.tmp#ChannelDerivation
Type witsml:ChannelDerivation
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
enumeration raw 
Raw measured data, directly from sensors.
enumeration simulated 
Simulated.
enumeration spliced 
Derived by splicing values from two or more other channels.
enumeration sampled 
Derived by sampling values from one or more other channels.
enumeration model 
Based on some modeled results of values in another one or more channels.
Source
 
<xs:element name="Derivation" type="witsml:ChannelDerivation" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>Indicates that the channel is derived from one or more other channels</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:LoggingMethod
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
Defines where the log channel gets its data from: LWD, MWD, wireline; or whether it is computed, etc.
Diagram
DiagramLog_xsd_Simple_Type_witsml_LoggingMethod.tmp#LoggingMethod
Type witsml:LoggingMethod
Type hierarchy
Properties
content simple
minOccurs 0
maxOccurs 1
Facets
maxLength 64
enumeration computed 
The log is a result of computed analyses from various sources.
enumeration distributed 
The log is derived from various different systems.
enumeration LWD 
The data of the log is a result of logging-while-drilling.
enumeration mixed 
The data is derived from multiple logging methods.
enumeration MWD 
The data of the log is a result of measurement-while-drilling.
enumeration surface 
The data is recorded on the surface or in real time.
enumeration wireline 
The data is derived as a function of wellbore depth.
Source
 
<xs:element name="LoggingMethod" type="witsml:LoggingMethod" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>Defines where the log channel gets its data from: LWD, MWD, wireline; or whether it is computed, etc.</xs:documentation>
  </xs:annotation>
</xs:element>
Element witsml:ChannelMetadata / witsml:NominalHoleSize
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
The nominal hole size at the time the measurement tool was in the hole. The size is "nominal" to indicate that this is not the result of a caliper reading or other direct measurement of the hoe size, but is just a name used to refer to the diameter. This is normally the bit size.

In a case where there are more than one diameter hole being drilled at the same time (like where a reamer is behind the bit) this diameter is the one which was seen by the sensor which produced a particular log channel.
Diagram
DiagramBaseTypes_xsd_Simple_Type_eml_AbstractMeasure.tmp#AbstractMeasureMeasureType_xsd_Complex_Type_eml_LengthMeasureExt.tmp#LengthMeasureExt_uomMeasureType_xsd_Complex_Type_eml_LengthMeasureExt.tmp#LengthMeasureExt
Type eml:LengthMeasureExt
Type hierarchy
Properties
content complex
minOccurs 0
maxOccurs 1
Attributes
QName Type Use
uom eml:LengthUomExt required
Source
 
<xs:element name="NominalHoleSize" type="eml:LengthMeasureExt" minOccurs="0" maxOccurs="1">
  <xs:annotation>
    <xs:documentation>The nominal hole size at the time the measurement tool was in the hole. The size is "nominal" to indicate that this is not the result of a caliper reading or other direct measurement of the hoe size, but is just a name used to refer to the diameter. This is normally the bit size. In a case where there are more than one diameter hole being drilled at the same time (like where a reamer is behind the bit) this diameter is the one which was seen by the sensor which produced a particular log channel.</xs:documentation>
  </xs:annotation>
</xs:element>
Element Group witsml:ChannelMetadata
Namespace http://www.energistics.org/energyml/data/witsmlv2
Annotations
 
Common metadata across all channel objects
Diagram
DiagramLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_ChannelStateLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_TimeDepthLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_ChannelClassLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_RunNumberLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_PassNumberLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_StartIndexLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_EndIndexLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_LoggingCompanyNameLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_LoggingCompanyCodeLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_ToolNameLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_ToolClassLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_DerivationLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_LoggingMethodLog_xsd_Element_Group_witsml_ChannelMetadata.tmp#ChannelMetadata_NominalHoleSize
Used by
Complex Type witsml:Channel
Model
Children witsml:ChannelClass, witsml:ChannelState, witsml:Derivation, witsml:EndIndex, witsml:LoggingCompanyCode, witsml:LoggingCompanyName, witsml:LoggingMethod, witsml:NominalHoleSize, witsml:PassNumber, witsml:RunNumber, witsml:StartIndex, witsml:TimeDepth, witsml:ToolClass, witsml:ToolName
Source
 
<xs:group name="ChannelMetadata">
  <xs:annotation>
    <xs:documentation>Common metadata across all channel objects</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="ChannelState" type="witsml:ChannelState" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>Defines where the channel gets its data from, e.g., calculated from another source, or from archive, or raw real-time, etc.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="TimeDepth" type="eml:String64" minOccurs="1" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>Is this a time or depth log?</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="ChannelClass" type="eml:DataObjectReference" minOccurs="1" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>A mandatory value categorizing a log channel. The classification system used in WITSML is the one from the PWLS group. NOTE: This should turn into an extensible enumeration before WITSML is released.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="RunNumber" type="eml:String64" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>The nominal run number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included. The value here should match a bit run number for LWD data and a wireline run number for logging data.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="PassNumber" type="eml:String64" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>The nominal pass number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included. The value here should match a wireline pass number for logging data.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="StartIndex" type="witsml:AbstractIndexValue" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>When the log header defines the direction as "Increasing", the startIndex is the starting (minimum) index value at which the first non-null data point is located. When the log header defines the direction as "Decreasing", the startIndex is the starting (maximum) index value at which the first non-null data point is located.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="EndIndex" type="witsml:AbstractIndexValue" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>When the log header defines the direction as "Increasing", the endIndex is the ending (maximum) index value at which the last non-null data point is located. When the log header defines the direction as Decreasing, the endIndex is the ending (minimum) index value at which the last non-null data point is located.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="LoggingCompanyName" type="eml:String64" minOccurs="1" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>Name of the logging company.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="LoggingCompanyCode" type="eml:String64" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>The RP66 organization code assigned to a logging company. The list is available at http://www.energistics.org/geosciences/geology-standards/rp66-organization-codes</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="ToolName" type="eml:String64" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>Name of the logging tool as given by the logging contractor.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="ToolClass" type="eml:String64" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>A value categorizing a logging tool. The classification system used in WITSML is the one from the PWLS group. NOTE: This should turn into an extensible enumeration before WITSML is released</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="Derivation" type="witsml:ChannelDerivation" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>Indicates that the channel is derived from one or more other channels</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="LoggingMethod" type="witsml:LoggingMethod" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>Defines where the log channel gets its data from: LWD, MWD, wireline; or whether it is computed, etc.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="NominalHoleSize" type="eml:LengthMeasureExt" minOccurs="0" maxOccurs="1">
      <xs:annotation>
        <xs:documentation>The nominal hole size at the time the measurement tool was in the hole. The size is "nominal" to indicate that this is not the result of a caliper reading or other direct measurement of the hoe size, but is just a name used to refer to the diameter. This is normally the bit size. In a case where there are more than one diameter hole being drilled at the same time (like where a reamer is behind the bit) this diameter is the one which was seen by the sensor which produced a particular log channel.</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:group>
XML Schema documentation generated by ® XML Editor.