| Name | Borehole_Point |
|---|---|
| Entity Type | Table |
| Description | A point on a borehole trajectory. |
| Submodel | Well_Marker |
| Entity Scope | Project |
| Primary Key | Id |
| Natural Key | Borehole_Id , Borehole_Point_Type , MD , Well_Marker_Surface_Id , Name , Source , Existence_Kind , Version |
| Generalizations | Entity , IT_Object , Tracked_Object |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Borehole_Id | Borehole |
|
Borehole which contains this point | Yes |
NUMBER(38) |
| Borehole_Point_Type | R_Borehole_Point |
|
The fundamental nature of the borehole point. Typical examples are; fault contact picks, casing shoe, or mud line. | No |
VARCHAR2(64) |
| Default_Color | COLOR_RGB | NA |
Default color to be used when rendering this borehole point. | No |
VARCHAR2(64) |
| Dip_Angle | double | Plane_Angle deg |
The maximum vertical angle that a surface; e.g. a bedding or fault surface, makes with the horizontal, measured perpendicular to the strike direction of the structure. Dip may be computed in several ways, including from logs, from well-to-well correlation, from gradients on interpreted time or depth surfaces (See Time_Dip and Depth_Dip), etc. | No |
NUMBER |
| Dip_Azimuth | double | Plane_Angle deg |
Azimuth of the direction of maximum dip of a surface; dip may be computed in several ways, including from logs, from well-to-well correlation, from gradients on interpreted time or depth surfaces, etc. | 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) |
| Geologic_Age | double | Geologic_Time Ma |
The minimum geologic age of the surface at the borehole point in millions of years. This may be different from Geologic_Surface associated with the marker. | No |
NUMBER |
| 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) |
| MD | double | Depth m |
Measured Depth of the borehole point. | No |
NUMBER |
| Marker_XYZ_Position_Id | Position |
|
Indicates the XYZ location of the point relative to a position. The Z value denotes the true vertical depth of the point. | No |
NUMBER(38) |
| 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) |
| Observation_Number | int | NA |
Number to identify when borehole intersects surface multiple times. | No |
NUMBER(10) |
| 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) |
| Strat_Exception | R_Stratigraphic_Exception |
|
This may indicate that part of the layer intersecting the borehole has been eroded, so an extra, projected marker may be set where the projected feature would have intersected the borehole. | No |
VARCHAR2(64) |
| 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) |
| Well_Marker_Surface_Id | Geologic_Surface |
|
Stratigraphic surface or other feature boundary which is intersected by the borehole at this point. | No |
NUMBER(38) |
| From Entity | Link | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Borehole_Point_Parm | Borehole_Point | The borehole point to which the measurement or observation applies. | Cascade | Yes |
| Borehole_Zone | Zone_Top | The point, measured along the borehole, that intersects the top of a zone. | Cascade | Yes |
| Borehole_Zone | Zone_Base | The point, measured along the borehole, that intersects the base of a zone. | Cascade | Yes |
| Correlate_Marker | Correlated_Marker | Two separate markers can be correlated by entering both points, the initial and a correlated marker. The association is commutative so ordering is irrelevant(if Borehole Point A is correlated to Borehole Point B, then Borehole Point B is correlated to Borehole Point A). | Cascade | Yes |
| Correlate_Marker | Initial_Marker | Two separate markers can be correlated by entering both points, the initial and a correlated marker. The association is commutative so ordering is irrelevant(if Borehole Point A is correlated to Borehole Point B, then Borehole Point B is correlated to Borehole Point A). | Cascade | Yes |
| Correlate_Missing_Section | Fault_Or_Unc_Marker | A borehole point that locates an interval or zone of missing section due to faulting, erosion or non-deposition. | Cascade | Yes |
| Study_Borehole_Point | Borehole_Point | The identifier of a borehole point that is an element of the study. | Nullify | No |
| Zone_DOV | Borehole_Point_Top | READ ONLY: Unique identifier for the Borehole Point top. | Cascade | No |
| Zone_DOV | Borehole_Point_Base | READ ONLY: Unique identifier for the Borehole Point base. | Cascade | No |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Well_Marker_Surface | Geologic_Surface | Stratigraphic surface or other feature boundary which is intersected by the borehole at this point. | Restrict | No |
| Strat_Exception | R_Stratigraphic_Exception | This may indicate that part of the layer intersecting the borehole has been eroded, so an extra, projected marker may be set where the projected feature would have intersected the borehole. | Restrict | No |
| Borehole | Borehole | Borehole which contains this point | Cascade | Yes |
| Borehole_Point_Type | R_Borehole_Point | The fundamental nature of the borehole point. Typical examples are; fault contact picks, casing shoe, or mud line. | Restrict | No |
| Marker_XYZ_Position | Position | Indicates the XYZ location of the point relative to a position. The Z value denotes the true vertical depth of the point. | Control | No |