-<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"/>
<!--
 -->
-<xsd:group name="grp_risk">
-<xsd:annotation>
 <xsd:documentation>The non-contextual content of a WITSML Risk object.</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="objectReference" type="witsml:refObjectString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A reference to an object that is defined within the context of a wellbore.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="type" type="witsml:RiskType" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The type of risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="category" type="witsml:RiskCategory" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The category of risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="subCategory" type="witsml:RiskSubCategory" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The sub category of risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="extendCategory" type="witsml:kindString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Custom string to further categorize the risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="affectedPersonnel" type="witsml:RiskAffectedPersonnel" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>The personnel afected by the risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dTimStart" type="witsml:timestamp" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Date and time that activities started.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dTimEnd" type="witsml:timestamp" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Date and time that activities were completed.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdHoleStart" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured Depth at start of activity.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdHoleEnd" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured Depth at end of activity.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdHoleStart" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>True Vertical Depth at start of activity.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdHoleEnd" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>True Vertical Depth at end of activity.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdBitStart" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured depth of bit at start of activity.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdBitEnd" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured depth of bit at end of activity.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="diaHole" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Hole diameter. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="severityLevel" type="witsml:levelIntegerCode" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Severity Level of the Risk. Values of 1 through 5 with 1 being the lowest.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="probabilityLevel" type="witsml:levelIntegerCode" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Probability Level of the Risk. Values of 1 through 5 with 1 being the lowest.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="summary" type="witsml:descriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>summary description of risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="details" type="witsml:descriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Complete description of Risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="identification" type="witsml:descriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Details for identifing the Risk.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="contingency" type="witsml:descriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Plan of action if the Risk materializes.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mitigation" type="witsml:descriptionString" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Plan of action to ensure the risk does not materialize.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
 </xsd:group>
 </xsd:schema>