-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131" version="1.3.1(NPD)">
<!--
                                                         
 -->
<!--
 POSC License Agreement
	This file is distributed under the POSC License Agreement at
	http://www.posc.org/about/license.shtml.
	Use of this file constitutes agreement with the POSC License Agreement.
	
 -->
<!--
                                                         
 -->
 <xsd:include schemaLocation="typ_dataTypes.xsd"/>
<!--
                                                         
 -->
-<xsd:simpleType name="abstractDescriptionString">
-<xsd:annotation>
 <xsd:documentation>A textual description of something.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractString">
 <xsd:maxLength value="256"/>
 </xsd:restriction>
 </xsd:simpleType>
<!--
                                                         
 -->
-<xsd:complexType name="timestampedDescriptionString" final="#all">
-<xsd:annotation>
 <xsd:documentation>A timestamped textual description.</xsd:documentation>
 </xsd:annotation>
-<xsd:simpleContent>
-<xsd:extension base="witsml:abstractDescriptionString">
 <xsd:attribute name="dTim" type="witsml:timestamp" use="required"/>
 </xsd:extension>
 </xsd:simpleContent>
 </xsd:complexType>
<!--
                                                         
 -->
-<xsd:complexType name="volumePerVolumeMeasurePercent">
-<xsd:simpleContent>
-<xsd:extension base="witsml:abstractMeasure">
 <xsd:attribute name="uom" type="witsml:percentUom" use="required"/>
 </xsd:extension>
 </xsd:simpleContent>
 </xsd:complexType>
<!--
                                                         
 -->
-<xsd:simpleType name="percentUom">
-<xsd:restriction base="witsml:abstractUomEnum">
 <xsd:enumeration value="%"/>
 </xsd:restriction>
 </xsd:simpleType>
<!--
                                                         
 -->
 </xsd:schema>