-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131" version="1.3.1(NPD)">
<!--
                                                         
 -->
<!--
 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="cs_activity.xsd"/>
 <xsd:include schemaLocation="cs_drillingParams.xsd"/>
 <xsd:include schemaLocation="cs_wbGeometry.xsd"/>
 <xsd:include schemaLocation="cs_dayCost.xsd"/>
 <xsd:include schemaLocation="cs_drillReportSurveyStation.xsd"/>
<!--
 Replaces cs_trajectoryStation. 
 -->
 <xsd:include schemaLocation="cs_fluid.xsd"/>
 <xsd:include schemaLocation="cs_scr.xsd"/>
 <xsd:include schemaLocation="cs_pitVolume.xsd"/>
 <xsd:include schemaLocation="cs_mudVolume.xsd"/>
 <xsd:include schemaLocation="cs_hse.xsd"/>
 <xsd:include schemaLocation="cs_personnel.xsd"/>
 <xsd:include schemaLocation="cs_supportCraft.xsd"/>
 <xsd:include schemaLocation="cs_weather.xsd"/>
 <xsd:include schemaLocation="cs_inventory.xsd"/>
 <xsd:include schemaLocation="cs_rigResponse.xsd"/>
 <xsd:include schemaLocation="cs_pumpOp.xsd"/>
 <xsd:include schemaLocation="cs_shakerOp.xsd"/>
<!--
 New items. 
 -->
 <xsd:include schemaLocation="cs_wellAlias.xsd"/>
 <xsd:include schemaLocation="cs_wellDatum.xsd"/>
 <xsd:include schemaLocation="cs_wellCRS.xsd"/>
 <xsd:include schemaLocation="cs_bitRecord.xsd"/>
 <xsd:include schemaLocation="typ_dataTypes_NEW.xsd"/>
 <xsd:include schemaLocation="cs_drillReportWellboreInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportStatusInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportPorePressure.xsd"/>
 <xsd:include schemaLocation="cs_drillReportLogInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportCoreInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportWellTestInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportFormTestInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportLithShowInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportEquipFailureInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportControlIncidentInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportStratInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportPerfInfo.xsd"/>
 <xsd:include schemaLocation="cs_drillReportGasReadingInf.xsd"/>
<!--
                                                         
 -->
-<xsd:group name="grp_drillReport">
-<xsd:annotation>
 <xsd:documentation>The non-contextual content of a WITSML Drilling Report object.</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="dTimStart" type="witsml:timestamp" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Date and time of the start of the reporting period. </xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=TODO"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dTimEnd" type="witsml:timestamp" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Date and time end of the reporting period. Report periods are commonly 24 hour periods. </xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=TODO"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="versionKind" type="witsml:OpsReportVersion" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The kind of report version. For example, a preliminary version.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT VERSION NUMBER"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="createDate" type="witsml:timestamp" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The date and time of the report creation. A later timestamp indicates a newer version. In order to update values in a report a full updated copy of the original report should be submitted.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=TODO"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellAlias" type="witsml:cs_wellAlias" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>An alternative name of the well (in a naming system). The above well name should be included in the list of aliases so that its origin can be known.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellboreAlias" type="witsml:cs_wellAlias" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>An alternative name of the wellbore (in a naming system). The above well name should be included in the list of aliases so that its origin can be known.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellDatum" type="witsml:cs_wellDatum" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Defines a vertical datum used for measured depths, vertical depths or elevations. This must be specified if one of the aforementioned coordinate values are included in the report. This only applies to this report and is generally a copy of the same information from the well object.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellCRS" type="witsml:cs_wellCRS" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Defines a coordinate reference system used by coordinates within this report. This must be specified if coordinate values are included in the report (i.e., in a survey station location). This only applies to this report and is generally a copy of the same information from the well object.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellboreInfo" type="witsml:cs_drillReportWellboreInfo" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>General information about a wellbore. The well is represented by the original wellbore.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT STATUS SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="statusInfo" type="witsml:cs_drillReportStatusInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General status information.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT STATUS SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="bitRecord" type="witsml:cs_bitRecord" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Information about a bit.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT BIT DATA SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="fluid" type="witsml:cs_fluid" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>One fluid record. </xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT MUD WEIGHT SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="porePressure" type="witsml:cs_drillReportPorePressure" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Information about the bit.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT PORE PRESSURE SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="extendedReport" type="witsml:timestampedDescriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A description of what happened from the end of report to an alternative time before the end of the next report. This is intended to allow a preliminary description of what happened from the end of the report (commonly midnight) until the time of submission of a preliminary report (commonly 6:00 in the morning).</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=PRESENT DRILLING OPERATION DESCRIPTION"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="surveyStation" type="witsml:cs_drillReportSurveyStation" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>A survey station recorded during the report interval. </xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT SURVEY SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="activity" type="witsml:cs_activity" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Activity breakdown, multiple for many activities. </xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT OPERATION MODE SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="logInfo" type="witsml:cs_drillReportLogInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a log.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT LOG SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="coreInfo" type="witsml:cs_drillReportCoreInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a core.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT CORE SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wellTestInfo" type="witsml:cs_drillReportWellTestInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a production well test.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT WELL PRODUCTION TEST SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="formTestInfo" type="witsml:cs_drillReportFormTestInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a wireline formation test.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT WELL FORMATION TEST SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="lithShowInfo" type="witsml:cs_drillReportLithShowInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about the lithology and shows in an interval.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT LITHOLOGY AND SHOWS SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="equipFailureInfo" type="witsml:cs_drillReportEquipFailureInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about equipment failure.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT EQUIPMENT FAIL SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="controlIncidentInfo" type="witsml:cs_drillReportControlIncidentInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a well control incident.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT WELL CONTROL INCIDENT SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="stratInfo" type="witsml:cs_drillReportStratInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a well control incident.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT PRELIMINARY STRATIGRAPHY SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="perfInfo" type="witsml:cs_drillReportPerfInfo" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a well control incident.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT PERFORATION INTERVALS SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gasReadingInfo" type="witsml:cs_drillReportGasReadingInf" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>General information about a gas reading.</xsd:documentation>
 <xsd:appinfo source="http://rds.posccaesar.com/owl/iso15926?class=DAILY DRILLING REPORT GAS READINGS SECTION CLASS"/>
 </xsd:annotation>
 </xsd:element>
<!--
 =============== Beginning of old elements not used above. =============== 
 -->
-<xsd:element name="drillingParams" type="witsml:cs_drillingParams" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Average bottom hole assembly parameters for report duration or actual instances of bottom hole assembly operations. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="wbGeometry" type="witsml:cs_wbGeometry" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Record of actual hole geometry at report time. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dayCost" type="witsml:cs_dayCost" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Cost item for the report interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="scr" type="witsml:cs_scr" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Slow circulation rate pressure test for well control operations. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="pitVolume" type="witsml:cs_pitVolume" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Pit volume record for the report interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mudVolume" type="witsml:cs_mudVolume" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Description of mud built, received, etc. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mudInventory" type="witsml:cs_inventory" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Mud inventory item and cost for the report interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="bulk" type="witsml:cs_inventory" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Bulk item usage and cost. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="rigResponse" type="witsml:cs_rigResponse" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average rig response readings for the day. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="pumpOp" type="witsml:cs_pumpOp" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Pump rate/pressure reading. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="shakerOp" type="witsml:cs_shakerOp" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Container element for shaker operation elements. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="hse" type="witsml:cs_hse" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Health, safety and environmental information. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="personnel" type="witsml:cs_personnel" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Personnel records. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="supportCraft" type="witsml:cs_supportCraft" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Support craft object container element. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="weather" type="witsml:cs_weather" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Metrological readings for the day. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
 </xsd:group>
 </xsd:schema>