| Name | Experimental_Variogram |
|---|---|
| Entity Type | Table |
| Description | An empirical variogram computed from data. Experimental variograms are used to determine the model for how a variable changes as a function of distance. The model may then be used in "kriging" (i.e., an optimal prediction). |
| Submodel | Uncertainty |
| Entity Scope | Project |
| Primary Key | Id |
| Natural Key | |
| Generalizations | Entity , IT_Object , Tracked_Object |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Azimuth | double | Plane_Angle deg |
The angle between pairs that are to be included in the variogram. An Azimuth _Tolerance is used to relax this constraint. | No |
NUMBER |
| Azimuth_Bandwidth | double | Length m |
The maximum distance that the endpoint of a pair may be from the Azimuth specified before the pair is excluded from the variogram computation. | No |
NUMBER |
| Azimuth_Tolerance | double | Plane_Angle deg |
The angular tolerance in the horizontal plane around Azimuth. Pairs that have azimuths outside the range given by the specified Azimuth plus or minus the Azimuth _Tolerance will be excluded from the variogram. | No |
NUMBER |
| Dip_Angle | double | Plane_Angle deg |
The dip angle of pairs to be included in the variogram, subject to a tolerance specified by Dip_Tolerance. | No |
NUMBER |
| Dip_Bandwidth | double | Length m |
The maximum distance that the endpoint of a pair may be away from the specified Dip before the pair is excluded from the variogram computation. The distance is measured perpendicular to the dip in the vertical plane. | No |
NUMBER |
| Dip_Tolerance | double | Plane_Angle deg |
The angular tolerance above and below the specified Dip. Pairs that have dips outside the range given by the specified dip plus or minus the Dip_Tolerance will be excluded from the variogram. | No |
NUMBER |
| Existence_Kind | REF_EXISTENCE_KIND | NA |
A reference value that describes the state of existence in the lifecycle of the entity, for example, Planned, Predicted, Required, Simulated, and Actual. | Yes Actual |
VARCHAR2(64) |
| GUID | STRING128 | NA |
Globally Unique IDentifier for an instance of a class. USAGE NOTES: There are two cases: 1) GUID is not populated or used; and 2) it is populated with a value that is globally unique. If the GUID is populated there are two means of doing so for a given project: 2a) Seabed automatically generates and populates the GUID when an instance is created (valid only on Oracle based systems); and 2b) the GUID is generated and populated by an application (other than Seabed) on instance creation. Whether Seabed automatically generates GUIDs for a project is determined by the Auto_GUID flag in SDS_Account. Note that techniques 2a and 2b can coexist in the same project. When GUIDs are automatically generated an application can override the automatically generated GUID with its own GUID by simply supplying the GUID value. Applications that generate their own GUIDs and populate the GUID column will function correctly on projects which have automatic GUID generation turned on. | No |
VARCHAR2(128) |
| Id | ID | No_Unit |
Unique identifier for this entity. | Yes |
NUMBER(38) |
| Insert_Date | DATE | NA |
Date the entity was created in the repository | No |
DATE |
| Insert_User | STRING64 | NA |
The name of the user responsible for the creation of this entity in the repository. | No |
VARCHAR2(64) |
| Lag_Length_Increment | double | Length m |
The amount to increase the distance between value pairs between calculations when creating the experimental variogram. | No |
NUMBER |
| Lag_Tolerance | double | Length m |
The distance tolerance around the lag for grouping distance pairs into lag classes. | No |
NUMBER |
| Maximum_Lag_Length | double | Length m |
The maximum value that the lag, or distance between value pairs, can have when computing the variogram. | No |
NUMBER |
| Name | ENTITY_NAME | NA |
The name given to any object or data item, e.g. name of Well, name of Field, etc. | No |
VARCHAR2(255) |
| Original_Source | STRING64 | NA |
The name of the person, Organization or project source that originally provided this entity, e.g. "IHS-EnergyData" or "FinderUpper Stratton Deeper Pool 15" | No |
VARCHAR2(64) |
| Produced_By | STRING64 | NA |
The name of application role that created the entity, for data created programmatically. | No |
VARCHAR2(64) |
| Remarks | STRING2000 | NA |
Any type of remarks added to an entity instance. | No |
VARCHAR2(2000) |
| SDAT_Label | int | No_Unit |
Label used by the security system for entitlements. SDAT is Secure Data Access Technology. | No |
NUMBER(10) |
| Source | STRING64 | NA |
Name of the person or organization responsible for this entitys E and P content and quality. Not the data technologist or IT expert creating the entity, for which see IT_Object.Insert_User and Update_User. | No |
VARCHAR2(64) |
| Spatial_Correlation_Id | Spatial_Correlation |
|
The Spatial_Correlation that the experimental variogram was run for. | No |
NUMBER(38) |
| Update_Date | DATE | NA |
Date of the most-recent modification to the entity. | No |
DATE |
| Update_User | STRING64 | NA |
The name of the user responsible for the last modification to this entity. | No |
VARCHAR2(64) |
| Version | STRING255 | NA |
The form or variant of the entity. | Yes 1 |
VARCHAR2(255) |
| From Entity | Link | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Experimental_Range | Experimental_Variogram | The experimental variogram that the range is specified for. | Cascade | No |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Spatial_Correlation | Spatial_Correlation | The Spatial_Correlation that the experimental variogram was run for. | Cascade | No |