-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131/addendum/combo" version="1.3.1">
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<!--
 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.
	
 -->
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 <xsd:include schemaLocation="typ_dataTypes.xsd"/>
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-<xsd:simpleType name="PerforationType">
-<xsd:annotation>
 <xsd:documentation>Defines the type of perforation mechanisms.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="gun">
-<xsd:annotation>
 <xsd:documentation>A device that uses shaped explosive charges to perforate wells in preparation for production.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="jet">
-<xsd:annotation>
 <xsd:documentation>The use of shaped explosive charges to create perforation tunnels. The explosive charge produces an extremely high-pressure jet that penetrates the casing or liner.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
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-<xsd:simpleType name="WellboreInterval">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="acidized">
-<xsd:annotation>
 <xsd:documentation>An interval treated with acid based hydraulic fracturing.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="fractured">
-<xsd:annotation>
 <xsd:documentation>An interval treated with hydraulic fracturing.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="openHole">
-<xsd:annotation>
 <xsd:documentation>The uncased portion of a well.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="perforated">
-<xsd:annotation>
 <xsd:documentation>An interval where communication tunnels have been created from the casing or liner into the reservoir formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
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 </xsd:schema>