12.6.9 ChannelSetMetadata

Topic Version1Published11/11/2016
For StandardWITSML v2.0
Type:ClassStereotype:«XSDgroup»

Common metadata across all channel objects.

Table 12.6.9-1 Attributes

Name

Type

Notes

ChannelClass

PropertyKind

A mandatory value categorizing a log channel. The classification system used in WITSML is the one from the PWLS group.

ChannelState

ChannelState

Defines where the channel gets its data from, e.g., calculated from another source, or from archive, or raw real-time, etc.

Derivation

ChannelDerivation

Indicates that the channel is derived from one or more other channels.

EndIndex

AbstractIndexValue

When the log header defines the direction as:

"Increasing", the endIndex is the ending (maximum) index value at which the last non-null data point is located.

“Decreasing”, the endIndex is the ending (minimum) index value at which the last non-null data point is located.

LoggingCompanyCode

String64

The RP66 organization code assigned to a logging company. The list is available at http://www.energistics.org/geosciences/geology-standards/rp66-organization-codes

LoggingCompanyName

String64

Name of the logging company.

LoggingMethod

LoggingMethod

Defines where the log channel gets its data from: LWD, MWD, wireline; or whether it is computed, etc.

NominalHoleSize

LengthMeasureExt

The nominal hole size (typically the bit size) at the time the measurement tool was in the hole. The size is "nominal" to indicate that this is not the result of a caliper reading or other direct measurement of the hole size, but is just a name used to refer to the diameter.

When more than one diameter holes are being drilled at the same time (e.g., where a reamer is behind the bit), this diameter is the one that was seen by the sensor that produced a particular log channel.

PassNumber

String64

The nominal pass number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included.

The value here should match a wireline pass number for logging data.

RunNumber

String64

The nominal run number for the channel. No precise meaning is declared for this attribute but it is so commonly used that it must be included.

The value here should match a bit run number for LWD data and a wireline run number for logging data.

StartIndex

AbstractIndexValue

When the log header defines the direction as:

"Increasing", the startIndex is the starting (minimum) index value at which the first non-null data point is located.

"Decreasing", the startIndex is the starting (maximum) index value at which the first non-null data point is located.

TimeDepth

String64

Use to indicate if this is a time or depth log.

ToolClass

String64

A value categorizing a logging tool. The classification system used in WITSML is the one from the PWLS group.

ToolName

String64

Name of the logging tool as given by the logging contractor.

Table 12.6.9-2 Associations

Association

Notes

From: ChannelSetMetadata.

To: ChannelDerivation

Dependency

 

From: ChannelSetMetadata.

To: ChannelClassKindExt

Dependency

 

From: ChannelSetMetadata.

To: ChannelState

Dependency

 

From: ChannelSetMetadata.

To: LoggingMethod

Dependency

 

From: Log.ChannelSetMetadata

1To: ChannelSetMetadata

Association

 

From: ChannelSet.ChannelSetMetadata

1To: ChannelSetMetadata

Association