<witsml:Wellbore 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:Wellbore>

<xs:element name="Wellbore" type="eml:DataObjectReference" minOccurs="1" maxOccurs="1"/>

<witsml:ChannelSet existenceKind="" objectVersion="" schemaVersion="" uuid="" xmlns:witsml="http://www.energistics.org/energyml/data/witsmlv2" xmlns:eml="http://www.energistics.org/energyml/data/commonv2">
  <eml:Aliases authority="">{0,unbounded}</eml:Aliases>
  <eml:Citation>{1,1}</eml:Citation>
  <eml:CustomData>{0,1}</eml:CustomData>
  <eml:ExtensionNameValue>{0,unbounded}</eml:ExtensionNameValue>
  <witsml:Index>{1,unbounded}</witsml:Index>
  <witsml:Channel existenceKind="" objectVersion="" schemaVersion="" uuid="">{1,unbounded}</witsml:Channel>
  <witsml:Data>{0,1}</witsml:Data>
  <witsml:ChannelState>{0,1}</witsml:ChannelState>
  <witsml:TimeDepth>{0,1}</witsml:TimeDepth>
  <witsml:ChannelClass>{0,1}</witsml:ChannelClass>
  <witsml:RunNumber>{0,1}</witsml:RunNumber>
  <witsml:PassNumber>{0,1}</witsml:PassNumber>
  <witsml:StartIndex>{0,1}</witsml:StartIndex>
  <witsml:EndIndex>{0,1}</witsml:EndIndex>
  <witsml:LoggingCompanyName>{0,1}</witsml:LoggingCompanyName>
  <witsml:LoggingCompanyCode>{0,1}</witsml:LoggingCompanyCode>
  <witsml:ToolName>{0,1}</witsml:ToolName>
  <witsml:ToolClass>{0,1}</witsml:ToolClass>
  <witsml:Derivation>{0,1}</witsml:Derivation>
  <witsml:LoggingMethod>{0,1}</witsml:LoggingMethod>
  <witsml:NominalHoleSize uom="">{0,1}</witsml:NominalHoleSize>
  <witsml:Wellbore>{0,1}</witsml:Wellbore>
  <witsml:DataContext>{0,1}</witsml:DataContext>
</witsml:ChannelSet>

<xs:element name="ChannelSet" type="witsml:ChannelSet" minOccurs="1" maxOccurs="unbounded"/>

<xs:complexType name="Log">
  <xs:annotation>
    <xs:documentation>Primarily a container for one or more channel sets (ChannelSet). In WITSML v2.+, most of the log information is now at the channel set level. The concept of multiple channel sets in a single log is significant change from WITSML v1.4.1.1, where each log represented exactly one group of curves and their data. For more information about log organization and how it works, see the WITSML Technical Usage Guide.</xs:documentation>
  </xs:annotation>
  <xs:complexContent>
    <xs:extension base="eml:AbstractObject">
      <xs:sequence>
        <xs:group ref="witsml:ChannelSetMetadata" minOccurs="1" maxOccurs="1"/>
        <xs:element name="Wellbore" type="eml:DataObjectReference" minOccurs="1" maxOccurs="1"/>
        <xs:element name="ChannelSet" type="witsml:ChannelSet" minOccurs="1" maxOccurs="unbounded"/>
      </xs:sequence>
    </xs:extension>
  </xs:complexContent>
</xs:complexType>