-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131/addendum/combo" version="1.3.1">
<!--
                                                         
 -->
<!--
 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="MaterialGrade">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="H-40">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="J-55">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="K-55">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="C-75">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="L-80">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="N-80">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="C-90">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HC-95">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="N-80">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="P-110">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="Q-125">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="V-150">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="X-56">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="13CR">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="special">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</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>
-<xsd:simpleType name="RodGrade">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="K">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="C">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="D">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="special">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</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>
<!--
                                                     
 -->
-<xsd:simpleType name="PackerType">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="permanent">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="retrievable">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</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>
<!--
                                                     
 -->
-<xsd:simpleType name="SlidingSleevePosition">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="open">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="closed">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</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>
<!--
                                                     
 -->
-<xsd:simpleType name="CompletionComponentKind">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="blast joint">
-<xsd:annotation>
 <xsd:documentation>A joint in a tubing string that is subjected to the abrasive action of oil and gas forcibly entering the wellbore from a high pressure formation. Blast joints are made of special materials that resist the severe conditions of the situation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="crossover nipple">
-<xsd:annotation>
 <xsd:documentation>A flared pipe fitting that is used to connect tubulars of different diameters.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="downhole choke">
-<xsd:annotation>
 <xsd:documentation>A device with a restricted opening placed in the the tubing to control the rate of liquid or gas flow to the surface.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="downhole pump">
-<xsd:annotation>
 <xsd:documentation>A rotating or reciprocating device within a wellbore used to transfer fluids; e.g., sucker rod, centrifugal, rotary, jet.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="downhole sensor">
-<xsd:annotation>
 <xsd:documentation>A device that may be placed within a wellbore for measuring or testing volumes, pressures, sizes, quantities, etc.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="expansion joint">
-<xsd:annotation>
 <xsd:documentation>A device used to permit linear expansion or contraction of a tubular string as the temperature rises or falls.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="flow coupling">
-<xsd:annotation>
 <xsd:documentation>xxxxxxxxxxxxxxxxxxxxxx</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="gas lift mandrel">
-<xsd:annotation>
 <xsd:documentation>A device run in the tubing string into which a gas lift valve is installed. The two most common types of mandrels are the conventional mandrel and the sidepocket mandrel.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="gas lift valve">
-<xsd:annotation>
 <xsd:documentation>A device installed on the tubing string of a gas lift well completin that is sensitive to tubing and casing pressures, which cause the valve to open and close. The functioning of the valve is to allow gas to be injected into the fluid in the tubing in order to cause the fluid to rise to the surface.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hold down nipple">
-<xsd:annotation>
 <xsd:documentation>A very short portion of the tubing string in which the pump is seated. Commonly located above the gas anchor. Its function is to hold the stationary part of the pump in place during the upstroke.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hole in tubing string">
-<xsd:annotation>
 <xsd:documentation>An unintentional hole in a tubular that allows the movement of fluid into or out of the tubular string.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="landing nipple">
-<xsd:annotation>
 <xsd:documentation>A receptacle in a tubing string with an internal profile to provide for latching and sealing of various types of plugs or valves.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mule shoe">
-<xsd:annotation>
 <xsd:documentation>A shaped form used on the bottom of orienting tools to position the tool. The shape resembles a mule shoe or that of the end of a pipe cut both diagonally and concave. The shaped end forms a wedge to rotate the tool when lowered into a mating seat for the mule shoe.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="nipple">
-<xsd:annotation>
 <xsd:documentation>A pipe fitting that is usually threaded on both ends and is less than 12 inches in length.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="packer">
-<xsd:annotation>
 <xsd:documentation>A device, usually employing rubber, used to produce a seal between tubing, casing, or drill pipe and the borehole wall or casing.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="perforated joint">
-<xsd:annotation>
 <xsd:documentation>A special pipe or casing which has the perforations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="safety joint">
-<xsd:annotation>
 <xsd:documentation>An accessory placed above the fishing tool in a tubing string. If the fishing tool is engaged and the fish cannot be pulled, the safety joint will permit disengagement.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="sealing bore">
-<xsd:annotation>
 <xsd:documentation>The polished section of tubular that receives a packing element and provides a seal.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="sliding sleeve">
-<xsd:annotation>
 <xsd:documentation>A special device placed in a string of tubing which can be operated by a wireline tool to open or close orifices (openings) to permit circulation between the tubing and annulus. It may also be used to open or shut off production from well completions.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="subsurface safety valve">
-<xsd:annotation>
 <xsd:documentation>A safety device installed in the upper wellbore to provide emergency closure of the producing conduits in the event of an emergency.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="tubing anchor">
-<xsd:annotation>
 <xsd:documentation>A device run into the wellbore of a pumped well as an integral part of the tubing which employs friction or slips between the anchor and the casing to prevent tubing movement with respect to the casing.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="tubing">
-<xsd:annotation>
 <xsd:documentation>XXXXXXXXXXXXXXXXXXXXXXXXXX</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="tubing sub">
-<xsd:annotation>
 <xsd:documentation>XXXXXXXXXXXXXXXXXXXXXXXXXX</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
                                                     
 -->
 </xsd:schema>