[16] | 1 | <?xml version="1.0" encoding="UTF-8"?> |
---|
| 2 | <xsd:schema |
---|
| 3 | elementFormDefault="qualified" |
---|
| 4 | attributeFormDefault="unqualified" |
---|
| 5 | targetNamespace="http://www.witsml.org/schemas/131" |
---|
| 6 | xmlns:witsml="http://www.witsml.org/schemas/131" |
---|
| 7 | xmlns:xsd="http://www.w3.org/2001/XMLSchema" |
---|
| 8 | version="1.3.1"> |
---|
| 9 | <!-- --> |
---|
| 10 | <!--POSC License Agreement |
---|
| 11 | This file is distributed under the POSC License Agreement at |
---|
| 12 | http://www.posc.org/about/license.shtml. |
---|
| 13 | Use of this file constitutes agreement with the POSC License Agreement. |
---|
| 14 | --> |
---|
| 15 | <!-- --> |
---|
| 16 | <xsd:include schemaLocation="typ_dataTypes.xsd"/> |
---|
| 17 | <xsd:include schemaLocation="cs_refWellWellbore.xsd"/> |
---|
| 18 | <xsd:include schemaLocation="cs_refWellWellboreRig.xsd"/> |
---|
| 19 | <xsd:include schemaLocation="attgrp_uid.xsd"/> |
---|
| 20 | <!-- --> |
---|
| 21 | <xsd:complexType name="cs_wellDatum"> |
---|
| 22 | <xsd:annotation> |
---|
| 23 | <xsd:documentation>Defines the datums associated with elevation, vertical depth |
---|
| 24 | and measured depth coordinates within the context of a well. </xsd:documentation> |
---|
| 25 | </xsd:annotation> |
---|
| 26 | <xsd:sequence> |
---|
| 27 | <xsd:element name="name" type="witsml:nameString" minOccurs="0" maxOccurs="1"> |
---|
| 28 | <xsd:annotation> |
---|
| 29 | <xsd:documentation>The human understandable contextual name of the reference datum.</xsd:documentation> |
---|
| 30 | </xsd:annotation> |
---|
| 31 | </xsd:element> |
---|
| 32 | <xsd:element name="code" type="witsml:ElevCodeEnum" minOccurs="0" maxOccurs="1"> |
---|
| 33 | <xsd:annotation> |
---|
| 34 | <xsd:documentation>The code value that represents the type of reference datum. |
---|
| 35 | This may represent a point on a device (e.g., kelly bushing) or it may represent |
---|
| 36 | a vertical reference datum (e.g., mean sea level).</xsd:documentation> |
---|
| 37 | </xsd:annotation> |
---|
| 38 | </xsd:element> |
---|
| 39 | <xsd:element name="datumName" type="witsml:wellKnownNameStruct" minOccurs="0" maxOccurs="1"> |
---|
| 40 | <xsd:annotation> |
---|
| 41 | <xsd:documentation>The name of the vertical reference datum in a particular naming system. |
---|
| 42 | This should only be specified if the above 'code' represents some variation of sea level. |
---|
| 43 | An optional short name (code) can also be specified. Specifying a well known datum is highly desired |
---|
| 44 | if the above code is a variant of sea level because sea level varies over time and space. |
---|
| 45 | An example would be to specify a name of 'Caspian Sea' with a code of '5106' in |
---|
| 46 | the 'EPSG' naming system.</xsd:documentation> |
---|
| 47 | </xsd:annotation> |
---|
| 48 | </xsd:element> |
---|
| 49 | <xsd:element name="kind" type="witsml:kindString" minOccurs="0" maxOccurs="unbounded"> |
---|
| 50 | <xsd:annotation> |
---|
| 51 | <xsd:documentation>Since various activities may use different points as |
---|
| 52 | measurement datums, it is useful to characterize the point based on its usage. |
---|
| 53 | A well reference datum may have more than one such characterization. |
---|
| 54 | For example, it may be the datum used by the driller and logger for measuring |
---|
| 55 | their depths. Example usage values would be 'permanent','driller', 'logger' |
---|
| 56 | 'WRP' (well reference point) and 'SRP' (site reference point).</xsd:documentation> |
---|
| 57 | </xsd:annotation> |
---|
| 58 | </xsd:element> |
---|
| 59 | <xsd:element name="wellbore" type="witsml:cs_refWellWellbore" minOccurs="0" maxOccurs="1"> |
---|
| 60 | <xsd:annotation> |
---|
| 61 | <xsd:documentation>A pointer to the wellbore that contains the reference datum. |
---|
| 62 | This should be specified if a measured depth is given.</xsd:documentation> |
---|
| 63 | </xsd:annotation> |
---|
| 64 | </xsd:element> |
---|
| 65 | <xsd:element name="rig" type="witsml:cs_refWellWellboreRig" minOccurs="0" maxOccurs="1"> |
---|
| 66 | <xsd:annotation> |
---|
| 67 | <xsd:documentation>A pointer to the rig that contains the device used |
---|
| 68 | as a reference datum. The rig may be associated with a wellbore in another well |
---|
| 69 | (e.g., pattern drilling using a rig on a track).</xsd:documentation> |
---|
| 70 | </xsd:annotation> |
---|
| 71 | </xsd:element> |
---|
| 72 | <xsd:element name="elevation" type="witsml:wellElevationCoord" minOccurs="0" maxOccurs="1"> |
---|
| 73 | <xsd:annotation> |
---|
| 74 | <xsd:documentation>The gravity based elevation coordinate of this reference datum |
---|
| 75 | as measured from another datum. Positive moving upward from the elevation datum. |
---|
| 76 | An elevation should be given unless this is a vertical reference datum (e.g., sea level). </xsd:documentation> |
---|
| 77 | </xsd:annotation> |
---|
| 78 | </xsd:element> |
---|
| 79 | <xsd:element name="measuredDepth" type="witsml:measuredDepthCoord" minOccurs="0" maxOccurs="1"> |
---|
| 80 | <xsd:annotation> |
---|
| 81 | <xsd:documentation>The measured depth coordinate of this reference datum |
---|
| 82 | as measured from another datum. The measured depth datum should either be the same as |
---|
| 83 | the elevation datum or it should be relatable to the elevation datum through other datums. |
---|
| 84 | Positive moving toward the bottomhole from the measured depth datum. |
---|
| 85 | This should be given when a local reference is "downhole", |
---|
| 86 | such as a kickoff point or ocean bottom template, and the borehole may not be vertical. |
---|
| 87 | If a Depth is given then an Elevation should also be given.</xsd:documentation> |
---|
| 88 | </xsd:annotation> |
---|
| 89 | </xsd:element> |
---|
| 90 | <xsd:element name="comment" type="witsml:commentString" minOccurs="0" maxOccurs="1"> |
---|
| 91 | <xsd:annotation> |
---|
| 92 | <xsd:documentation>A contextual description of the well reference datum.</xsd:documentation> |
---|
| 93 | </xsd:annotation> |
---|
| 94 | </xsd:element> |
---|
| 95 | </xsd:sequence> |
---|
| 96 | <xsd:attribute name="defaultMeasuredDepth" type="witsml:logicalBoolean" use="optional"> |
---|
| 97 | <xsd:annotation> |
---|
| 98 | <xsd:documentation>True indicates that this is the default reference datum |
---|
| 99 | for measured depth coordinates. |
---|
| 100 | False or not given indicates that this is not the default reference datum. |
---|
| 101 | Measured depth coordinates that do not specify a datum reference should be |
---|
| 102 | assumed to be measured relative to this default reference datum. |
---|
| 103 | Only one reference datum may be designated as the default measured depth datum for each well. |
---|
| 104 | Values are "true" (or "1") and "false" ( or "0").</xsd:documentation> |
---|
| 105 | </xsd:annotation> |
---|
| 106 | </xsd:attribute> |
---|
| 107 | <xsd:attribute name="defaultVerticalDepth" type="witsml:logicalBoolean" use="optional"> |
---|
| 108 | <xsd:annotation> |
---|
| 109 | <xsd:documentation>True indicates that this is the default reference datum |
---|
| 110 | for vertical depth coordinates. |
---|
| 111 | False or not given indicates that this is not the default reference datum. |
---|
| 112 | Vertical depth coordinates that do not specify a datum reference should be |
---|
| 113 | assumed to be measured relative to the default reference datum. |
---|
| 114 | Only one reference datum may be designated as the default vertical depth datum for each well. |
---|
| 115 | Values are "true" (or "1") and "false" ( or "0").</xsd:documentation> |
---|
| 116 | </xsd:annotation> |
---|
| 117 | </xsd:attribute> |
---|
| 118 | <xsd:attribute name="defaultElevation" type="witsml:logicalBoolean" use="optional"> |
---|
| 119 | <xsd:annotation> |
---|
| 120 | <xsd:documentation>True indicates that this is the default reference datum |
---|
| 121 | for elevation coordinates. |
---|
| 122 | False or not given indicates that this is not the default reference datum. |
---|
| 123 | Elevation coordinates that do not specify a datum reference should be assumed to be |
---|
| 124 | measured relative to the default reference datum. |
---|
| 125 | Only one reference datum may be designated as the default elevation datum for each well. |
---|
| 126 | Values are "true" (or "1") and "false" ( or "0").</xsd:documentation> |
---|
| 127 | </xsd:annotation> |
---|
| 128 | </xsd:attribute> |
---|
| 129 | <xsd:attributeGroup ref="witsml:attgrp_uid"> |
---|
| 130 | <xsd:annotation> |
---|
| 131 | <xsd:documentation>The unique identifier of the reference datum.</xsd:documentation> |
---|
| 132 | </xsd:annotation> |
---|
| 133 | </xsd:attributeGroup> |
---|
| 134 | </xsd:complexType> |
---|
| 135 | <!-- --> |
---|
| 136 | </xsd:schema> |
---|