| Name | Core |
|---|---|
| Entity Type | View |
| Description | A rock sample obtained by drilling into the earth with a pipe conveyed hollow bit and core barrel. Full recovery of a conventional core is typically 30 feet in length. |
| Submodel | Rock_Sample |
| Entity Scope | Project |
| Primary Key | Id |
| Natural Key | Conv_Core_Acquisition_Id , Borehole_Id , Opr_Sample_Number , Top_Depth , Existence_Kind , Version |
| Generalizations | Rock_Sample , Entity , IT_Object , Tracked_Object |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Base_Depth | double | Depth m |
The depth measurement that represents the base of the rock sample. This is the deepest or last encountered sample depth along the borehole path and is not related to stratigraphic position. | Yes |
NUMBER |
| Borehole_Id | Borehole |
|
The identifier of the borehole that produced this core. | No |
NUMBER(38) |
| Box_Number | CODE | NA |
A value that uniquely identifies the container in which the sample is stored. | No |
VARCHAR2(64) |
| Cabinet_Number | int | NA |
The number of the cabinet in which the sample is stored. | No |
NUMBER(10) |
| Conv_Core_Acquisition_Id | Conv_Core_Acquisition |
|
The identifier of the wellsite activity that produced this core. | No |
NUMBER(38) |
| Core_Diameter | double | Cylinder_Diameter mm |
A measurement that represents the diameter of the recovered core. | No |
NUMBER |
| Core_Exposure_Remarks | STRING255 | NA |
A free text description of the time duration and climate conditions to which the core was exposed prior to preservation at the wellsite. | No |
VARCHAR2(255) |
| Core_Slab_Flag | boolean | NA |
A flag to denote whether a particular core has been slabbed or not. | No |
NUMBER(1) |
| 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) |
| Gamma_Corr_Flag | boolean | NA |
An indicator that specifies whether or not a core gamma log was acquired from this core. 1 = core gamma log was acquired; 0 = core gamma log was not acquired. | No |
NUMBER(1) |
| Gamma_Corr_Remarks | STRING255 | NA |
Free-form text comments about the acquisition of the core gamma log. | No |
VARCHAR2(255) |
| 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) |
| Max_Dip | double | Plane_Angle deg |
A measurement that represents the maximum dip angle of a bedding surface over the entire length of the core. True dip is measured perpendicular to the line of strike in a vertical plane. Only oriented core allow for measurement of dip directions and are generally made with a goniometer. | No |
NUMBER |
| Max_Dip_Azimuth | double | Plane_Angle deg |
A measurement that represents the least dip direction value observed over the entire core length. Dip direction is measured in a horizontal plane parallel to dip. Azimuth is measured as a clockwise angle of departure from true (geographic) north, in a horizontal plane. Only oriented core allow for measurement of dip directions and are generally made with a goniometer. | No |
NUMBER |
| Min_Dip | double | Plane_Angle deg |
A measurement that represents the minimum dip angle of a bedding surface over the entire length of the core. True dip is measured perpendicular to the line of strike in a vertical plane. Only oriented core allow for measurement of dip directions and are generally made with a goniometer. | No |
NUMBER |
| Min_Dip_Azimuth | double | Plane_Angle deg |
A measurement that represents the least dip direction value observed over the entire core length. Dip direction is measured in a horizontal plane parallel to dip. Azimuth is measured as a clockwise angle of departure from true (geographic) north, in a horizontal plane. Only oriented core allow for measurement of dip directions and are generally made with a goniometer. | 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) |
| Opr_Sample_Number | CODE | NA |
An identifier, assigned by the well operator, that uniquely identifies the sample. | No |
VARCHAR2(64) |
| 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) |
| Other_Services_Desc | STRING255 | NA |
Description of other services provided for the portrayal or depiction of rock sample properties. Examples include, Photography and X-Ray scanning. | No |
VARCHAR2(255) |
| Produced_By | STRING64 | NA |
The name of application role that created the entity, for data created programmatically. | No |
VARCHAR2(64) |
| Rack_Number | int | NA |
The number of the rack in which the sample is stored. | No |
NUMBER(10) |
| Recovered_Length | double | Length m |
A measurement that represents the length of the core that was recovered from the core acquisition activity. | No |
NUMBER |
| Remarks | STRING2000 | NA |
Any type of remarks added to an entity instance. | No |
VARCHAR2(2000) |
| Row_Number | int | NA |
The number of the row in which the sample is stored | No |
NUMBER(10) |
| SDAT_Label | int | No_Unit |
Label used by the security system for entitlements. SDAT is Secure Data Access Technology. | No |
NUMBER(10) |
| Sample_Condition | STRING64 | NA |
A textual description of the condition of the sample | No |
VARCHAR2(64) |
| Sample_Quality | R_Sample_Quality |
|
A value that describes the visually estimated quality of the core. Valid values are: GOOD, FAIR, POOR. A good cuttings quality implies the sample is representative of the formation and should provide accurate analysis. A fair core quality implies some damage during the sample acquisition process but suitability for analysis. A poor core quality implies significant damage or contamination and a sample that is unsuitable for most analysis. | No |
VARCHAR2(64) |
| 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) |
| Storage_Location | STRING64 | NA |
The name of the location where the sample is stored. | No |
VARCHAR2(64) |
| Sub_Type | Meta_Entity |
|
Sub type of Rock_Sample | No |
VARCHAR2(30) |
| Top_Depth | double | Depth m |
The depth measurement that represents the top of the rock sample. This is the shallowest or first encountered sample depth along the borehole path and is not related to stratigraphic position. | Yes |
NUMBER |
| 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 |
|---|---|---|---|---|
| Core_Preservation | Rock_Sample | The identifier of the core sample that was preserved. | Cascade | Yes |
| Core_Segment | Parent_Rock_Sample | The identifier of the parent core from which this core segment sample was extracted. | Cascade | Yes |
| Plug_Analysis_DOV | Core | READ ONLY: Unique identifier for the Core. | Nullify | No |
| Plug_DOV | Core | READ ONLY: Unique identifier for the Core. | Nullify | No |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Sample_Quality | R_Sample_Quality | A value that describes the visually estimated quality of the core. Valid values are: GOOD, FAIR, POOR. A good cuttings quality implies the sample is representative of the formation and should provide accurate analysis. A fair core quality implies some damage during the sample acquisition process but suitability for analysis. A poor core quality implies significant damage or contamination and a sample that is unsuitable for most analysis. | Restrict | No |
| Conv_Core_Acquisition | Conv_Core_Acquisition | The identifier of the wellsite activity that produced this core. | Restrict | No |
| Borehole | Borehole | The identifier of the borehole that produced this core. | Cascade | No |