EPSG:8378

EPSG example wellbore local vertical CRS

Attributes

Unit: metre

Geodetic CRS: EPSG example wellbore local vertical CRS

Datum: EPSG example wellbore vertical datum

Prime meridian: Greenwich

Data source: OGP

Information source: IOGP

Revision date: 2019-02-16

Scope: Wellbore survey.

Remarks: Vertical component of wellbore cubic CRS (CRS code 8820). Depth is relative to the zero depth point used during wellbore survey (e.g. derrick floor).

Area of use: Description of the extent of the CRS.

Coordinate system: Vertical CS. Axis: local depth (d). Orientation: down. UoM: m.

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Definition: OGP XML

<div class="syntax"><pre><span class="cp">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span> <span class="nt">&lt;gml:VerticalCRS</span> <span class="na">xmlns:epsg=</span><span class="s">&quot;urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset&quot;</span> <span class="na">xmlns:gml=</span><span class="s">&quot;http://www.opengis.net/gml/3.2&quot;</span> <span class="na">xmlns:xlink=</span><span class="s">&quot;http://www.w3.org/1999/xlink&quot;</span> <span class="na">gml:id=</span><span class="s">&quot;iogp-crs-8378&quot;</span><span class="nt">&gt;</span> <span class="nt">&lt;gml:metaDataProperty&gt;</span> <span class="nt">&lt;epsg:CommonMetaData&gt;</span> <span class="nt">&lt;epsg:type&gt;</span>vertical<span class="nt">&lt;/epsg:type&gt;</span> <span class="nt">&lt;epsg:alias</span> <span class="na">alias=</span><span class="s">&quot;TVD&quot;</span> <span class="na">code=</span><span class="s">&quot;7570&quot;</span> <span class="na">codeSpace=</span><span class="s">&quot;urn:ogc:def:naming-system:EPSG::7301&quot;</span><span class="nt">&gt;</span> <span class="nt">&lt;epsg:remarks&gt;</span>In industry there is confusion about the zero level for term TVD whether below the Vertical Reference Surface or the wellbore Zero Depth Point and care should be taken.<span class="nt">&lt;/epsg:remarks&gt;</span> <span class="nt">&lt;/epsg:alias&gt;</span> <span class="nt">&lt;epsg:informationSource&gt;</span>IOGP<span class="nt">&lt;/epsg:informationSource&gt;</span> <span class="nt">&lt;epsg:revisionDate&gt;</span>2019-02-16<span class="nt">&lt;/epsg:revisionDate&gt;</span> <span class="nt">&lt;epsg:changes&gt;</span> <span class="nt">&lt;epsg:changeID</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:change-request:EPSG::2017.040&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;/epsg:changes&gt;</span> <span class="nt">&lt;epsg:show&gt;</span>true<span class="nt">&lt;/epsg:show&gt;</span> <span class="nt">&lt;epsg:isDeprecated&gt;</span>false<span class="nt">&lt;/epsg:isDeprecated&gt;</span> <span class="nt">&lt;/epsg:CommonMetaData&gt;</span> <span class="nt">&lt;/gml:metaDataProperty&gt;</span> <span class="nt">&lt;gml:identifier</span> <span class="na">codeSpace=</span><span class="s">&quot;IOGP&quot;</span><span class="nt">&gt;</span>urn:ogc:def:crs:EPSG::8378<span class="nt">&lt;/gml:identifier&gt;</span> <span class="nt">&lt;gml:name&gt;</span>EPSG example wellbore local vertical CRS<span class="nt">&lt;/gml:name&gt;</span> <span class="nt">&lt;gml:remarks&gt;</span>Vertical component of wellbore cubic CRS (CRS code 8820). Depth is relative to the zero depth point used during wellbore survey (e.g. derrick floor).<span class="nt">&lt;/gml:remarks&gt;</span> <span class="nt">&lt;gml:domainOfValidity</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:area:EPSG::4393&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:scope&gt;</span>Wellbore survey.<span class="nt">&lt;/gml:scope&gt;</span> <span class="nt">&lt;gml:verticalCS</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:cs:EPSG::1049&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:verticalDatum</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:datum:EPSG::1205&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;/gml:VerticalCRS&gt;</span> </pre></div>
<?xml version="1.0" encoding="UTF-8"?>
 <gml:VerticalCRS xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="iogp-crs-8378">
   <gml:metaDataProperty>
      <epsg:CommonMetaData>
         <epsg:type>vertical</epsg:type>
         <epsg:alias alias="TVD" code="7570" codeSpace="urn:ogc:def:naming-system:EPSG::7301">
            <epsg:remarks>In industry there is confusion about the zero level for term TVD whether below the Vertical Reference Surface or the wellbore Zero Depth Point and care should be taken.</epsg:remarks>
         </epsg:alias>
         <epsg:informationSource>IOGP</epsg:informationSource>
         <epsg:revisionDate>2019-02-16</epsg:revisionDate>
         <epsg:changes>
            <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2017.040" />
         </epsg:changes>
         <epsg:show>true</epsg:show>
         <epsg:isDeprecated>false</epsg:isDeprecated>
      </epsg:CommonMetaData>
   </gml:metaDataProperty>
   <gml:identifier codeSpace="IOGP">urn:ogc:def:crs:EPSG::8378</gml:identifier>
   <gml:name>EPSG example wellbore local vertical CRS</gml:name>
   <gml:remarks>Vertical component of wellbore cubic CRS (CRS code 8820). Depth is relative to the zero depth point used during wellbore survey (e.g. derrick floor).</gml:remarks>
   <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::4393" />
   <gml:scope>Wellbore survey.</gml:scope>
   <gml:verticalCS xlink:href="urn:ogc:def:cs:EPSG::1049" />
   <gml:verticalDatum xlink:href="urn:ogc:def:datum:EPSG::1205" />
</gml:VerticalCRS>