-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131" version="1.3.1">
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 <xsd:include schemaLocation="typ_dataTypes.xsd"/>
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-<xsd:complexType name="cs_refWellWellboreRig">
-<xsd:annotation>
 <xsd:documentation>A reference to a rig within a wellbore. The wellbore may be defined within the context of another well. This value represents a foreign key from one node to another.</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="rigReference" type="witsml:refNameString" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the rig with which there is a relationship.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellboreParent" type="witsml:refNameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the wellbore that contains the rigReference. This is not needed unless the referenced rig is outside the context of a common parent wellbore.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellParent" type="witsml:refNameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the well that contains the wellboreParent. This is not needed unless the referenced wellbore is outside the context of a common parent well.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
 </xsd:complexType>
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 </xsd:schema>