| Name | Wellhead |
|---|---|
| Entity Type | Table |
| Description | The surface termination of a borehole that incorporates facilities for installing casing hangers during the well construction phase. The wellhead also incorporates a means of hanging the production tubing and installing the Christmas tree and surface flow-control facilities in preparation for the production phase of the well. |
| Submodel | Facility |
| Entity Scope | Project |
| Primary Key | Id |
| Natural Key | |
| Generalizations | Assembly , Facility , Entity , IT_Object , Tracked_Object |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Catalog_Cost | double | No_Unit |
The catalog cost of the wellhead expressed in the currency denoted by the attribute Catalog_Currency | No |
NUMBER |
| Catalog_Currency | R_Currency |
|
The currency in which the catalog cost is expressed. | No |
VARCHAR2(64) |
| Christmas_Tree_Desc | STRING255 | NA |
A description of the christmas tree installed at the wellhead | No |
VARCHAR2(255) |
| 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) |
| Facility_Equipment_Flag | CODE | NA |
A flag to denote whether a given facility should be treated as a facility (F), a piece of equipment (E) or both (B). A facility labeled as F represents a role (e.g. ESP) played by physical piece(s) of equipment and would not have attributes like serial number, manufacturer etc. It can be related to the physical pieces(s) of equipment using Facility_Composition. The individual physical pieces can be replaced if they need to be, without changing the facility. A Facility labeled as E represents a physical piece of equipment (e.g. Drill Pipe) which is normally used in the context of an activity and would not be permanently installed. A facility labeled as B represents both a physical piece of equipment as well as the role played by it. If this kind of Facility is connected in the network and stops working and needs to be replaced, then all connections to this Facility are expired and new connections are made to the replacement facility. | No |
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) |
| 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) |
| Rated_Pressure | double | Pressure kPa |
The rated pressure of the wellhead | No |
NUMBER |
| 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) |
| 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) |
| Vendor_Id | Company |
|
The company from which the facility was purchased. | No |
NUMBER(38) |
| Version | STRING255 | NA |
The form or variant of the entity. | Yes 1 |
VARCHAR2(255) |
| Wellhead_Size | double | Cylinder_Diameter mm |
The size of the Wellhead. This is usually the diameter of the borehole over which it is designed to sit. | No |
NUMBER |
| Wellhead_Type | R_Wellhead |
|
The type of the wellhead | No |
VARCHAR2(64) |
| From Entity | Link | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Wellhead_Outlet_Pty | Wellhead | The wellhead to which these outlet properties refer. | Cascade | No |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Wellhead_Type | R_Wellhead | The type of the wellhead | Restrict | No |
| Vendor | Company | _ | Nullify | No |
| Catalog_Currency | R_Currency | The currency in which the catalog cost is expressed. | Restrict | No |