<xs:simpleType name="LoggingMethod">
  <xs:annotation>
    <xs:documentation>Specifies the method of logging used to record or produce the data in the log.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="eml:TypeEnum">
    <xs:enumeration value="computed">
      <xs:annotation>
        <xs:documentation>The log is a result of computed analyses from various sources.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="distributed">
      <xs:annotation>
        <xs:documentation>The log is derived from various different systems.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="LWD">
      <xs:annotation>
        <xs:documentation>The data of the log is a result of logging-while-drilling.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mixed">
      <xs:annotation>
        <xs:documentation>The data is derived from multiple logging methods.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="MWD">
      <xs:annotation>
        <xs:documentation>The data of the log is a result of measurement-while-drilling.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="surface">
      <xs:annotation>
        <xs:documentation>The data is recorded on the surface or in real time.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="wireline">
      <xs:annotation>
        <xs:documentation>The data is derived as a function of wellbore depth.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>