| Name | Perforated_Interval |
|---|---|
| Entity Type | Table |
| Description | The section of wellbore that has been prepared for production by creating channels between the reservoir formation and the wellbore. In many cases, long reservoir sections will be perforated in several intervals, with short sections of un-perforated casing between each interval to enable isolation devices, like packers, to be set for subsequent treatments or remedial operations. Additionally, if this Perforated_Interval record references a Perforation record in order to specify the perforation activity that created this interval, its Borehole_Id value should be in sync with the corresponding Perforation.Borehole_Id value. |
| Submodel | Perforation |
| Entity Scope | Project |
| Primary Key | Id |
| Natural Key | Borehole_Id , Top_Interval_MD , Base_Interval_MD , Current_Status , Existence_Kind , Version |
| Generalizations | Entity , IT_Object , Tracked_Object |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Base_Interval_MD | double | Depth m |
The measured depth of the base of the interval to be perforated | No |
NUMBER |
| Borehole_Id | Borehole |
|
The borehole in which this perforated interval resides. NOTE: If this perforated interval record is referenced in the Well_Completion_Perf table in order to specify the well completion into which it produces, this value should be in sync with the corresponding Well_Completion.Borehole_Id value. | Yes |
NUMBER(38) |
| Carrier_Description | STRING2000 | NA |
A description of the charge carrier used for this perforation | No |
VARCHAR2(2000) |
| Carrier_Make | STRING64 | NA |
The make of the charge carrier used for this perforation | No |
VARCHAR2(64) |
| Charge_Make | STRING64 | NA |
The make of charge used for this perforation | No |
VARCHAR2(64) |
| Charge_Size | double | Mass kg |
The size of the charge used for this perforation expressed in terms of explosive weight. | No |
NUMBER |
| Charge_Type | STRING64 | NA |
The type of charge used for this perforation | No |
VARCHAR2(64) |
| Current_Status | R_Perf_Interval_Status |
|
The status of the perforated interval that is currently in effect. This column represents a denormalization; and its value should be equal to the Perf_Interval_Status.Status value in the Perf_Interval_Status record where End_Date is NULL. | No |
VARCHAR2(64) |
| 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) |
| Gun_Size | double | Cylinder_Diameter mm |
The size of the gun used for this perforation job | No |
NUMBER |
| Id | ID | No_Unit |
Unique identifier for this entity. | Yes |
NUMBER(38) |
| Inner_Diameter | double | Cylinder_Diameter mm |
The bore diameter | No |
NUMBER |
| 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) |
| Maximum_Diameter | double | Cylinder_Diameter mm |
Maximum diameter of the section to be Perforated | No |
NUMBER |
| Misrun_Flag | boolean | NA |
An indicator to designate whether a perforation set was a misrun set or not | No |
NUMBER(1) |
| 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) |
| Perforating_Gun_Type | R_Perforating_Gun |
|
The type of perforation gun used in the perforation activity | No |
VARCHAR2(64) |
| Perforation_Activity_Id | Perforation_Activity |
|
The perforation job that created this perforation interval. | No |
NUMBER(38) |
| 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) |
| Shot_Angle | double | Plane_Angle deg |
Orientation | No |
NUMBER |
| Shot_Angle_Method | STRING64 | NA |
The method of orientation used in the perforation activity | No |
VARCHAR2(64) |
| Shot_Count | double | No_Unit |
Total number of shots attempted | No |
NUMBER |
| Shot_Density | double | Inverse_Length 1/m |
Average Shot Density | No |
NUMBER |
| Shot_Diameter | double | Cylinder_Diameter mm |
The diameter of the perforation entrance holes. (I.e., tunnel diameter.) | No |
NUMBER |
| Shot_Length | double | Length m |
The average length of the perforations measured from the casing to the end of the perforation. (I.e., tunnel length.) | No |
NUMBER |
| Shot_Phase | double | Plane_Angle deg |
The phase of the shot | No |
NUMBER |
| 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) |
| Successful_Shot_Count | double | No_Unit |
Total number of successful shots | No |
NUMBER |
| Top_Interval_MD | double | Depth m |
The measured depth of the top of the interval | No |
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 |
|---|---|---|---|---|
| Gravel_Packing | Perforated_Interval | For perforated interval against which the gravel pack job is done. | Assoc to Many | No |
| Perf_Interval_Reservoir | Perf_Interval | The identifier of the perforated interval that drew fluids from this reservoir. | Cascade | Yes |
| Perf_Interval_Status | Perforated_Interval | An Association to define the statuses of a perforation interval and when they were active. | Cascade | Yes |
| Well_Completion_Perf | Perforated_Interval | The identifier of the perforated interval that was utilized by the well completion. | Cascade | Yes |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Current_Status | R_Perf_Interval_Status | The status of the perforated interval that is currently in effect. This column represents a denormalization; and its value should be equal to the Perf_Interval_Status.Status value in the Perf_Interval_Status record where End_Date is NULL. | Restrict | No |
| Borehole | Borehole | The borehole in which this perforated interval resides. NOTE: If this perforated interval record is referenced in the Well_Completion_Perf table in order to specify the well completion into which it produces, this value should be in sync with the corresponding Well_Completion.Borehole_Id value. | Cascade | Yes |
| Perforating_Gun_Type | R_Perforating_Gun | The type of perforation gun used in the perforation activity | Restrict | No |
| Perforation_Activity | Perforation_Activity | The perforation job that created this perforation interval. | Nullify | No |