-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131" 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="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_trajectoryStation.xsd"/>
 <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"/>
<!--
 -->
-<xsd:group name="grp_opsReport">
-<xsd:annotation>
 <xsd:documentation>The non-contextual content of a WITSML Operations Report object.</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="rig" type="witsml:refNameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the rig utilized in this reporting period. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dTim" type="witsml:timestamp" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Date and time the information is related to. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimStart" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time from start of Operations (commonly in days). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimSpud" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time since bit broke ground (commonly in days). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimLoc" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time rig on location (commonly in days). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdReport" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Wellbore Measured Depth. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdReport" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Wellbore True Vertical Depth. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="distDrill" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Distance drilled since last report. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimDrill" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Drilling time. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdPlanned" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured depth of plan for this day number. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="ropAv" type="witsml:velocityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Average Rate of Penetration through Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="ropCurrent" type="witsml:velocityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Rate of penetration at report time. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="supervisor" type="witsml:nameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Name of operator rig supervisor. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="engineer" type="witsml:nameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Nae of Engineer. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="geologist" type="witsml:nameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Name of operator wellsite geologist. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimDrillRot" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time spent rotary drilling for report interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimDrillSlid" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time spent slide drilling from start of bit run. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimCirc" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time spent circulating from start of bit run. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimReam" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time spent reaming from start of bit run. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimHold" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time spent with no DD work (commonly in hours). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="eTimSteering" type="witsml:timeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Time spent steering bottom hole assembly (commonly in hours). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="distDrillRot" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Distance drilled - rotating. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="distDrillSlid" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Distance drilled - sliding. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="distReam" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Distance reamed. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="distHold" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Distance covered while holding angle with a steerable drilling assembly. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="distSteering" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Distance covered while actively steering with a steerable drilling assembly. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="numPob" type="witsml:nonNegativeCount" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Total number of personnel on board. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="numContract" type="witsml:nonNegativeCount" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Number of contractor personnel on board. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="numOperator" type="witsml:nonNegativeCount" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Number of Operator personnel on board. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="numService" type="witsml:nonNegativeCount" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Number of service company personnel on board. </xsd:documentation>
 </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:annotation>
 </xsd:element>
-<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="trajectoryStation" type="witsml:cs_trajectoryStation" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>Survey station recorded during the report interval. </xsd:documentation>
 </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: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:element name="numAFE" type="witsml:str32" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>AFE (authorization for expenditure) number that this cost item applies to. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="costDay" type="witsml:cost" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Daily Cost. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="costDayMud" type="witsml:cost" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Daily Mud Cost. </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="conditionHole" type="witsml:str32" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Hole condition description. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="lithology" type="witsml:str32" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Lithology for the Interval. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="nameFormation" type="witsml:str32" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Name of formation. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="diaCsgLast" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Diameter of last casing. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdCsgLast" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured depth of last casing. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdCsgLast" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>True vertical depth of last casing. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdLot" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>True vertical depth of leak off test point. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="presLotEmw" type="witsml:densityMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Leak off test equivalent mud weight. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="presKickTol" type="witsml:pressureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Kick tolerance pressure. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="volKickTol" type="witsml:volumeMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Kick tolerance volume. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="maasp" type="witsml:pressureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Maximum allowable shut-in casing pressure. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tubular" type="witsml:refNameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the tubular (assembly) used in this report period. This represents a foreign key to tubular. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="sum24Hr" type="witsml:descriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>24 hour summary description. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="forecast24Hr" type="witsml:descriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Forecast for next 24 hrs. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="statusCurrent" type="witsml:descriptionString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Current status description. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
 </xsd:group>
 </xsd:schema>