3.4 Mapping WITSML LogCurveInfo to the ETP Index Metadata Record

Topic Version1Published10/16/2017
For StandardETPW14 v1

The ETP IndexMetadataRecord is mainly constructed from the index curve of the WITSML v1.4.1.1 log. The table below maps the WITSML elements to the ETP attributes and calls out element examples from this example XML:


<?xml version="1.0" encoding="UTF-8"?>
<logs xmlns="http://www.witsml.org/schemas/1series" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.4.1.1">
<log uidWell="101e8e3a-5811-4b2e-b404-0367b360e4b6" uidWellbore="dd3406d4-0d8d-4530-9b3a-337a03515a2c" uid="832TE2C54">
<indexType>measured depth</indexType>
<direction>increasing</direction>
<indexCurve>Depth</indexCurve>
<logCurveInfo uid="4389">
<mnemonic>Depth</mnemonic>
<unit>m</unit>
<mnemAlias>Depth</mnemAlias>
<curveDescription>The mnemonic of the index curve</curveDescription>
<typeLogData>double</typeLogData>
</logCurveInfo> 
</log>
</logs>

ETP Attribute

IndexMetadataRecord Properties

Mapping to WITSML Element

Example

indexType

The indexType in the log object.

Depth

uom

The unit in the logCurveInfo.

m

depthDatum

URI of a well datum.

eml://witsml14/well(10e8e3a-5811-4b2e-b404-0367b360e4b6)/wellDatum(KB)

direction

The direction in the log object.

Increasing

mnemonic

The mnemonic tag in the logCurveInfo node.

Depth

description

The curveDescription in the logCurveInfo.

The mnemonic of the index curve.

uri

Construct a URI according to the Energistics Identifier Specification.

For WITSML v1.4.1.1, provide a fully qualified path to the logCurveInfo.

eml://witsml14/well(101e8e3a-5811-4b2e-b404-0367b360e4b6)wellbore(dd3406d4-0d8d-4530-9b3a-337a03515a2c)/log(832TE2C54)/logCurveInfo(Depth)

customData

Not possible to map from a standard WITSML v1.4.1.1 log object.

null

scale

See ETP Specification, Section 3.3.16.8.

3

timeDatum

Not possible to map from a standard WITSML v1.4.1.1 log object.

null