-<xs:schema targetNamespace="http://www.energistics.org/energyml/data/witsmlv2" elementFormDefault="qualified" version="2.0">

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-<!--

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			Use of this file constitutes agreement with the Energistics Product License Agreement.
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-<xs:annotation>

<xs:documentation>Tool Error Term Set Schema.</xs:documentation>

</xs:annotation>

-<!--

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<xs:import namespace="http://www.energistics.org/energyml/data/commonv2" schemaLocation="../../../common/v2.1/xsd_schemas/EmlAllObjects.xsd"/>

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<xs:include schemaLocation="ToolErrorModel.xsd"/>

-<xs:complexType name="AbstractIscwsaErrorCoefficient" abstract="true">

-<xs:annotation>

<xs:documentation>Describes the survey measurement or value that the error term applies to.</xs:documentation>

</xs:annotation>

<xs:sequence/>

-<xs:attribute name="uid" use="required" type="eml:String64">

-<xs:annotation>

<xs:documentation>Unique identifier for this instance of AbstractIscwsaErrorCoefficient.</xs:documentation>

</xs:annotation>

</xs:attribute>

</xs:complexType>

-<xs:complexType name="Azi">

-<xs:annotation>

<xs:documentation>Describes what survey measurement or value the error term applies to.</xs:documentation>

</xs:annotation>

-<xs:complexContent>

-<xs:extension base="witsml:AbstractIscwsaErrorCoefficient">

-<xs:sequence>

-<xs:element name="Azi" type="eml:String2000" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>Hole azimuth. Corrected to the well’s azimuth reference.</xs:documentation>

</xs:annotation>

</xs:element>

</xs:sequence>

</xs:extension>

</xs:complexContent>

</xs:complexType>

-<xs:complexType name="Inc">

-<xs:annotation>

<xs:documentation>Describes what survey measurement or value the error term applies to.</xs:documentation>

</xs:annotation>

-<xs:complexContent>

-<xs:extension base="witsml:AbstractIscwsaErrorCoefficient">

-<xs:sequence>

-<xs:element name="Inc" type="eml:String2000" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>Inclination, measured deviation from vertical.</xs:documentation>

</xs:annotation>

</xs:element>

</xs:sequence>

</xs:extension>

</xs:complexContent>

</xs:complexType>

-<xs:complexType name="Depth">

-<xs:annotation>

<xs:documentation>Describes what survey measurement or value the error term applies to.</xs:documentation>

</xs:annotation>

-<xs:complexContent>

-<xs:extension base="witsml:AbstractIscwsaErrorCoefficient">

-<xs:sequence>

-<xs:element name="Depth" type="eml:String2000" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The measured depth of the point.</xs:documentation>

</xs:annotation>

</xs:element>

</xs:sequence>

</xs:extension>

</xs:complexContent>

</xs:complexType>

-<xs:complexType name="IscwsaNomenclatureConstant">

-<xs:annotation>

<xs:documentation>A nomenclature constant.</xs:documentation>

</xs:annotation>

-<xs:sequence>

-<xs:element name="Name" type="eml:String64" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The name of the constant.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="Value" type="xs:double" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The value of the constant.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="Unit" type="eml:UomEnum" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The unit of measure of the constant. This value must match an acronym from the Energistics unit of measure dictionary.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="Description" type="eml:String2000" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>A textual description of the constant.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="ExtensionNameValue" type="eml:ExtensionNameValue" minOccurs="0" maxOccurs="unbounded">

-<xs:annotation>

<xs:documentation>Extensions to the schema based on a name-value construct.</xs:documentation>

</xs:annotation>

</xs:element>

</xs:sequence>

-<xs:attribute name="uid" use="required" type="eml:String64">

-<xs:annotation>

<xs:documentation>Unique identifier for this instance of IscwsaNomenclatureConstant.</xs:documentation>

</xs:annotation>

</xs:attribute>

</xs:complexType>

-<xs:complexType name="IscwsaErrorTerm">

-<xs:annotation>

<xs:documentation>Captures the reference error terms that are included in error models using ErrorTermValues.</xs:documentation>

</xs:annotation>

-<xs:sequence>

-<xs:element name="Name" type="eml:String64" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>This is the unique mnemonic for this term, e.g., "ABIX" or "DECR".</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="Type" type="witsml:ErrorTermSource" minOccurs="0" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The class of the error source.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="MeasureClass" type="eml:MeasureClass" minOccurs="0" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The kind of quantity that the term represents. This constrains the unit that can be used for any errorTermValues.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="Label" type="eml:String64" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>Human-readable name for the term, may be presented in application software. E.g., "MWD: X-Acceleromter Bias with Z-Axis Corr."</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="Description" type="eml:String2000" minOccurs="0" maxOccurs="1">

-<xs:annotation>

<xs:documentation>Human-readable name for the term. It may be presented in application software, e.g., "MWD: X-Acceleromter Bias with Z-Axis Corr."</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="OperatingMode" type="witsml:SurveyToolOperatingMode" minOccurs="0" maxOccurs="unbounded">

-<xs:annotation>

<xs:documentation>Operating mode that is valid for this error term. In the absence of this element assume "stationary".</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="ExtensionNameValue" type="eml:ExtensionNameValue" minOccurs="0" maxOccurs="unbounded">

-<xs:annotation>

<xs:documentation>Extensions to the schema based on a name-value construct.</xs:documentation>

</xs:annotation>

</xs:element>

<xs:element name="ErrorCoefficient" type="witsml:IscwsaErrorCoefficient" minOccurs="1" maxOccurs="unbounded"/>

</xs:sequence>

-<xs:attribute name="uid" use="required" type="eml:String64">

-<xs:annotation>

<xs:documentation>Unique identifier for this instance of IscwsaErrorTerm.</xs:documentation>

</xs:annotation>

</xs:attribute>

</xs:complexType>

-<xs:simpleType name="ErrorTermSource">

-<xs:annotation>

<xs:documentation>Specifies the codes for the various classes of error sources.</xs:documentation>

</xs:annotation>

-<xs:restriction base="eml:TypeEnum">

-<xs:enumeration value="sensor">

-<xs:annotation>

<xs:documentation>Errors arising from sensors in the survey tool.</xs:documentation>

</xs:annotation>

</xs:enumeration>

-<xs:enumeration value="azimuth reference">

-<xs:annotation>

<xs:documentation>Errors arising from the adoption of a particular reference azimuth.</xs:documentation>

</xs:annotation>

</xs:enumeration>

-<xs:enumeration value="magnetic">

-<xs:annotation>

<xs:documentation>Errors arising from external magnetic field influences.</xs:documentation>

</xs:annotation>

</xs:enumeration>

-<xs:enumeration value="alignment">

-<xs:annotation>

<xs:documentation>Errors arising from the misalignment of the tool relative to the borehole.</xs:documentation>

</xs:annotation>

</xs:enumeration>

-<xs:enumeration value="misalignment">

-<xs:annotation>

<xs:documentation>Specifies the codes for the various classes of error source.</xs:documentation>

</xs:annotation>

</xs:enumeration>

-<xs:enumeration value="depth">

-<xs:annotation>

<xs:documentation>Errors arising from the measurement of depth. </xs:documentation>

</xs:annotation>

</xs:enumeration>

-<xs:enumeration value="reference">

-<xs:annotation>

<xs:documentation>Errors arising from the measurement of depth.</xs:documentation>

</xs:annotation>

</xs:enumeration>

</xs:restriction>

</xs:simpleType>

-<xs:complexType name="IscwsaErrorCoefficient">

-<xs:annotation>

<xs:documentation>Describes what survey measurement or value the error term applies to.</xs:documentation>

</xs:annotation>

-<xs:sequence>

-<xs:element name="ExtensionNameValue" type="eml:ExtensionNameValue" minOccurs="0" maxOccurs="unbounded">

-<xs:annotation>

<xs:documentation>Extensions to the schema based on a name-value construct.</xs:documentation>

</xs:annotation>

</xs:element>

<xs:element name="AbstractIscwsaErrorCoefficient" type="witsml:AbstractIscwsaErrorCoefficient" minOccurs="1" maxOccurs="unbounded"/>

</xs:sequence>

-<xs:attribute name="uid" use="required" type="eml:String64">

-<xs:annotation>

<xs:documentation>Unique identifier for this instance of IscwsaErrorCoefficient.</xs:documentation>

</xs:annotation>

</xs:attribute>

</xs:complexType>

<xs:element name="ToolErrorTermSet" type="witsml:ToolErrorTermSet" substitutionGroup="eml:AbstractDataObject"/>

-<xs:complexType name="ToolErrorTermSet">

-<xs:annotation>

<xs:documentation>Captures a set of surveying tool error terms which may be used in a toolErrorModel. This object is globally unique.</xs:documentation>

</xs:annotation>

-<xs:complexContent>

-<xs:extension base="eml:AbstractObject">

-<xs:sequence>

<xs:element name="Authorization" type="witsml:IscwsaAuthorizationData" minOccurs="0" maxOccurs="1"/>

<xs:element name="Nomenclature" type="witsml:IscwsaNomenclature" minOccurs="0" maxOccurs="1"/>

<xs:element name="ErrorTerm" type="witsml:IscwsaErrorTerm" minOccurs="0" maxOccurs="unbounded"/>

</xs:sequence>

</xs:extension>

</xs:complexContent>

</xs:complexType>

-<xs:complexType name="IscwsaNomenclature">

-<xs:annotation>

<xs:documentation>A nomenclature for the description of error terms.</xs:documentation>

</xs:annotation>

-<xs:sequence>

<xs:element name="Parameter" type="witsml:IscwsaNameAndDescription" minOccurs="0" maxOccurs="unbounded"/>

<xs:element name="Function" type="witsml:IscwsaNameAndDescription" minOccurs="0" maxOccurs="unbounded"/>

<xs:element name="Constant" type="witsml:IscwsaNomenclatureConstant" minOccurs="0" maxOccurs="unbounded"/>

</xs:sequence>

</xs:complexType>

-<xs:complexType name="IscwsaNameAndDescription">

-<xs:annotation>

<xs:documentation>A generic type which captures a name and a description of something. The semantics of the something is defined by the parent element.</xs:documentation>

</xs:annotation>

-<xs:sequence>

-<xs:element name="Name" type="eml:String64" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The name of the item.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="Description" type="eml:String2000" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>A textual description of the item.</xs:documentation>

</xs:annotation>

</xs:element>

-<xs:element name="ExtensionNameValue" type="eml:ExtensionNameValue" minOccurs="0" maxOccurs="unbounded">

-<xs:annotation>

<xs:documentation>Extensions to the schema based on a name-value construct.</xs:documentation>

</xs:annotation>

</xs:element>

</xs:sequence>

-<xs:attribute name="uid" use="required" type="eml:String64">

-<xs:annotation>

<xs:documentation>Unique identifier for this instance of IscwsaNameAndDescription.</xs:documentation>

</xs:annotation>

</xs:attribute>

</xs:complexType>

-<xs:complexType name="Tvd">

-<xs:annotation>

<xs:documentation>Describes what survey measurement or value the error term applies to.</xs:documentation>

</xs:annotation>

-<xs:complexContent>

-<xs:extension base="witsml:AbstractIscwsaErrorCoefficient">

-<xs:sequence>

-<xs:element name="Tvd" type="eml:String2000" minOccurs="1" maxOccurs="1">

-<xs:annotation>

<xs:documentation>The true vertical depth covered by the tool error term set.</xs:documentation>

</xs:annotation>

</xs:element>

</xs:sequence>

</xs:extension>

</xs:complexContent>

</xs:complexType>

</xs:schema>