12.13.1 AziRef
| Topic Version | 1 | Published | 11/11/2016 | ||
| For Standard | WITSML v2.0 | ||||
| Type: | Enumeration | Stereotype: | «Enumeration» | ||
Reference to the azimuth of the trajectory
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Name |
Type |
Notes |
|---|---|---|
|
magnetic north |
The north direction as defined by Magnetic North Pole at the time of the measurement. The Magnetic North Pole is the direction that a magnet points to when freely rotating. |
|
|
grid north |
The north direction is defined by the coordinate grid in the projection coordinate system. |
|
|
true north |
The north direction as defined by the true North Pole. The true North Pole is an average of the actual measured north axis, which is the axis of rotation of the earth. |
|
|
unknown |
The value is not known. Avoid using this value. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations. |
|
Association |
Notes |
|---|---|
|
From: AziRef. To: TypeEnum Generalization |
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|
From: Target. To: AziRef Dependency |
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From: Trajectory. To: AziRef Dependency |