-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131" version="1.3.1">
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 <xsd:include schemaLocation="cs_stnTrajRawData.xsd"/>
 <xsd:include schemaLocation="cs_stnTrajCorUsed.xsd"/>
 <xsd:include schemaLocation="cs_stnTrajValid.xsd"/>
 <xsd:include schemaLocation="cs_stnTrajMatrixCov.xsd"/>
 <xsd:include schemaLocation="cs_location.xsd"/>
 <xsd:include schemaLocation="cs_refWellboreTrajectoryStation.xsd"/>
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-<xsd:group name="grp_trajectoryStation">
-<xsd:annotation>
 <xsd:documentation>The non-contextual content of a WITSML Trajectory Station object.</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="target" type="witsml:refNameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the intended target of this station. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dTimStn" type="witsml:timestamp" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Date and time the station was measured or created. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="typeTrajStation" type="witsml:TrajStationType" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Type of survey station. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="typeSurveyTool" type="witsml:TypeSurveyTool" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The type of tool used for the measurements.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="md" type="witsml:measuredDepthCoord" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Measured depth of measurement from the drill datum. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvd" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Vertical depth of the measurements. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="incl" type="witsml:planeAngleMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Hole inclination, measured from vertical. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="azi" type="witsml:planeAngleMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Hole azimuth. Corrected to wells azimuth reference. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mtf" type="witsml:planeAngleMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Toolface angle (magnetic). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gtf" type="witsml:planeAngleMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Toolface angle (gravity). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dispNs" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>North-south offset, positive to the North. This is relative to wellLocation with a North axis orientation of aziRef. If a displacement with respect to a different point is desired then define a localCRS and specify local coordinates in location.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dispEw" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>East-west offset, positive to the East. This is relative to wellLocation with a North axis orientation of aziRef. If a displacement with respect to a different point is desired then define a localCRS and specify local coordinates in location. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="vertSect" type="witsml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Distance along vertical section azimuth plane. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dls" type="witsml:anglePerLengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Dogleg severity. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="rateTurn" type="witsml:anglePerLengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Turn rate, radius of curvature computation. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="rateBuild" type="witsml:anglePerLengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Build Rate, radius of curvature computation. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="mdDelta" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Delta measured depth from previous station. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="tvdDelta" type="witsml:wellVerticalDepthCoord" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Delta true vertical depth from previous station. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="modelToolError" type="witsml:commentString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Tool error model used to compute covariance matrix. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gravTotalUncert" type="witsml:accelerationLinearMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Survey tool gravity uncertainty. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dipAngleUncert" type="witsml:planeAngleMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Survey tool dip uncertainty. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="magTotalUncert" type="witsml:magneticInductionMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Survey tool magnetic uncertainty. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gravAccelCorUsed" type="witsml:logicalBoolean" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Was an accelerometer alignment correction applied to survey computation? Values are "true" (or "1") and "false" (or "0"). </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="magXAxialCorUsed" type="witsml:logicalBoolean" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Was a magnetometer alignment correction applied to survey computation? Values are "true" (or "1") and "false" (or "0").</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="sagCorUsed" type="witsml:logicalBoolean" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Was a bottom hole assembly sag correction applied to the survey computation? Values are "true" (or "1") and "false" (or "0").</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="magDrlstrCorUsed" type="witsml:logicalBoolean" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Was a drillstring magnetism correction applied to survey computation? Values are "true" (or "1") and "false" (or "0").</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gravTotalFieldReference" type="witsml:accelerationLinearMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Gravitational field theoretical/reference value. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="magTotalFieldReference" type="witsml:magneticInductionMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Geomagnetic field theoretical/reference value. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="magDipAngleReference" type="witsml:planeAngleMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Magnetic dip angle theoretical/reference value. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="magModelUsed" type="witsml:nameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Geomagnetic model used. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="magModelValid" type="witsml:nameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Current valid interval for the geomagnetic model used. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="geoModelUsed" type="witsml:nameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Gravitational model used. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="statusTrajStation" type="witsml:TrajStationStatus" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Status of the station. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="rawData" type="witsml:cs_stnTrajRawData" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Applies only to measured magnetic stations. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="corUsed" type="witsml:cs_stnTrajCorUsed" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Applies only to measured magnetic stations. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="valid" type="witsml:cs_stnTrajValid" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Applies only to measured magnetic stations. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="matrixCov" type="witsml:cs_stnTrajMatrixCov" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Covariance matrix for error model. </xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="location" type="witsml:cs_location" minOccurs="0" maxOccurs="unbounded">
-<xsd:annotation>
 <xsd:documentation>The 2D coordinates of the item. Note that within the context of trajectory, the "original" coordinates are inherently local coordinates as defined above.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="sourceStation" type="witsml:cs_refWellboreTrajectoryStation" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the trajectoryStation from which this station was derived. The trajectoryStation may be in another wellbore.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
 </xsd:group>
 </xsd:schema>