| Name | Stimulation_Stage |
|---|---|
| Entity Type | Table |
| Description | A section or portion of the stimulation activity. |
| Submodel | Stimulation |
| Entity Scope | Project |
| Primary Key | Id |
| Natural Key | |
| Generalizations | Borehole_Activity , Wellsite_Activity , Activity , Entity , IT_Object , Tracked_Object |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Activity_Program_Id | Activity_Program |
|
Reference to the program during which the activity was performed. | No |
NUMBER(38) |
| Activity_State | STRING64 | NA |
The current state, or status, of the activity. Activity state is a refinement of the lifecycle indicator Existence_Kind. For example, a drilling job whose Existence_Kind is "Actual" could have an activity state of "turning to the right", "suspended due to weather", or "tool makeup or breakdown". An activity whose Existence_Kind is "Required" could have State values like "under investigation", "proposed" and "AFE approved". Note: The valid list of activity states will vary from one kind of activity to another, so the values entered into this column are not validated via a lookup table. | No |
VARCHAR2(64) |
| Activity_Template_Id | Activity_Template |
|
The identifier of the activity template which activates or characterizes the Activity. | No |
NUMBER(38) |
| Average_Tubing_Pressure | double | Pressure kPa |
The average tubing pressure during the stage | No |
NUMBER |
| Balls_Recovered_Count | double | No_Unit |
Number of ball sealers recovered | No |
NUMBER |
| Balls_Used_Count | double | No_Unit |
Number of ball sealers used to divert the acid | No |
NUMBER |
| Borehole_Id | Borehole |
|
The identifier of the borehole in which the activity occurred. | Yes |
NUMBER(38) |
| Bridge_Plug_MD | double | Depth m |
The measured depth of the bridge plug | No |
NUMBER |
| Diversion_Method | R_Diversion_Method |
|
The diversion method used in a Stimulation Job. Ex Bridge plug and packer, Chemical etc | No |
VARCHAR2(64) |
| Duration | double | Time s |
The duration of the activity. For planned activities, this would be expected duration. | No |
NUMBER |
| End_Date | DATE | NA |
The date and time at which the activity will end or did end. For planned activities, this would be expected end date. | No |
DATE |
| End_MD | double | Depth m |
Measured depth at the end of the activity or proposed depth end of the activity. | 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) |
| External_Reference | STRING64 | NA |
A value that is used by an external organization to reference this activity. For example, if an external organization is hired to perform this activity, this column could be used to store the work order or purchase order number that organization uses to reference this activity. | No |
VARCHAR2(64) |
| Final_Casing_Pressure | double | Pressure kPa |
The casing pressure at the end of the stage | No |
NUMBER |
| Final_Tubing_Pressure | double | Pressure kPa |
The tubing pressure at the end of the stage | No |
NUMBER |
| Flow_Path | CODE | NA |
This is the path that the fluid takes through the string. Examples could be Annulus, Casing, Tubing or Coiled Tubing | 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) |
| Initial_Casing_Pressure | double | Pressure kPa |
The casing pressure at the start of the stage | No |
NUMBER |
| Initial_Tubing_Pressure | double | Pressure kPa |
The tubing pressure at the start of the stage | 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) |
| Internal_Reference | STRING64 | NA |
A value that is used internally within the organization to reference this activity. | No |
VARCHAR2(64) |
| Max_Frac_Gradient | double | Pressure_Per_Length kPa/m |
Fracture pressure gradient expressed as pressure per unit length (example, psi/ft) at which the formation accepts whole fluid from the wellbore. When a range of values is specified for the estimated fracture gradient, then this value corresponds to the Maximum value in the range of values provided. | No |
NUMBER |
| Min_Frac_Gradient | double | Pressure_Per_Length kPa/m |
Fracture pressure gradient expressed as pressure per unit length (example, psi/ft) at which the formation accepts whole fluid from the wellbore. When a range of values is specified for the estimated fracture gradient, then this value corresponds to the Minimum value in the range of values provided. | 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) |
| Observed_Frac_Pressure | double | Pressure kPa |
Surface pressure at which formation fracture occurs, i.e. when the formation accepts whole fluid from the wellbore. Actual fracture gradient at a given depth can be computed using the following formula: Fracture gradient = (Observed_Frac_Pressure + Total Hydrostatic Pressure - Total_Friction_Pressure ) / Formation Depth | No |
NUMBER |
| 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) |
| Packer_MD | double | Depth m |
The measured depth of the Packer | No |
NUMBER |
| Pressure_Trend | CODE | NA |
A description of the trend of the pressure during this stage | No |
VARCHAR2(64) |
| Produced_By | STRING64 | NA |
The name of application role that created the entity, for data created programmatically. | No |
VARCHAR2(64) |
| Purpose | STRING255 | NA |
A description of purpose of the activity or its stage | No |
VARCHAR2(255) |
| 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) |
| Screenout_Flag | boolean | NA |
A flag to indicate whether or not screenout occurred. Screenout is a condition that occurs when the solids carried in a treatment fluid, such as proppant in a fracture fluid, create a bridge across the perforations or similar restricted flow area. This creates a sudden and significant restriction to fluid flow that causes a rapid rise in pump pressure. | No |
NUMBER(1) |
| Screenout_Pressure | double | Pressure kPa |
Pressure at which screenout occurred. Screenout is a condition that occurs when the solids carried in a treatment fluid, such as proppant in a fracture fluid, create a bridge across the perforations or similar restricted flow area. This creates a sudden and significant restriction to fluid flow that causes a rapid rise in pump pressure. | No |
NUMBER |
| Shut_In_Pressure | double | Pressure kPa |
The instantaneous shut in pressure during this stage | No |
NUMBER |
| Shut_In_Time | double | Time s |
The total shut in time for this stage | 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) |
| Start_Date | DATE | NA |
The date and time at which the activity will start or did start. For planned activities, this would be expected start date. | No |
DATE |
| Start_MD | double | Depth m |
Measured depth at the start of the activity or proposed start depth of the activity. | No |
NUMBER |
| Stimulation_Activity_Id | Stimulation |
|
The stimulation job to which the stage is associated. Example: the squeeze stage of a frac job | Yes |
NUMBER(38) |
| Stimulation_Stage_Type | R_Stimulation_Stage |
|
The type of stimulation stage activity | Yes |
VARCHAR2(64) |
| Successful_Flag | boolean | NA |
A flag to indicate whether or not the activity was successful (Yes/No) | No |
NUMBER(1) |
| Time_Offset | double | Time s |
The time offset from the start of the program that this activity is scheduled to start at. This is normally used while planning a job. | No |
NUMBER |
| Total_Cost | double | No_Unit |
The total cost of the activity expressed in the local currency. | No |
NUMBER |
| Total_Friction_Pressure | double | Pressure kPa |
Total of friction losses in the pipe and annulus taking into account the losses in both open hole and cased hole sections. Friction loss refers to a reduction in the pressure of a fluid caused by its motion against an enclosed surface (such as a pipe). As the fluid moves through the pipe, friction between the fluid and the pipe wall and within the fluid itself creates a pressure loss. The faster the fluid moves, the greater are the losses. | No |
NUMBER |
| Tracer_Used_Flag | boolean | NA |
A flag to indicate whether a tracer was used during this acidizing job | No |
NUMBER(1) |
| Transient_Period | R_Transient_Period |
|
A code or name that indicates whether the activity is executed daily, monthly, on demand, etc. | No |
VARCHAR2(64) |
| Triggering_Event_Id | Event |
|
The identifier of the event that triggered the start of this activity. Events can trigger activities. For example, an explosion event could trigger a firefighting activity. Note that this value should not conflict with, or be confused with, the value in Activity_Status.Triggering_Event. | 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) |
| Well_Completion_Id | Well_Completion |
|
The identifier for the completion that is being stimulated. | No |
NUMBER(38) |
| Work_String_Id | Work_String |
|
The work string used during a borehole activity. | No |
NUMBER(38) |
| From Entity | Link | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Stimulation_Evaluation | Stimulation_Stage | The stimulation stage for which the stimulation evaluation test was performed. | Cascade | No |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Well_Completion | Well_Completion | The identifier for the completion that is being stimulated. | Cascade | No |
| Stimulation_Activity | Stimulation | The stimulation job to which the stage is associated. Example: the squeeze stage of a frac job | Cascade | Yes |
| Diversion_Method | R_Diversion_Method | The diversion method used in a Stimulation Job. Ex Bridge plug and packer, Chemical etc | Restrict | No |
| Stimulation_Stage_Type | R_Stimulation_Stage | The type of stimulation stage activity | Restrict | Yes |
| Activity_Template | Activity_Template | _ | Restrict | No |
| Fulfilled_Activity | Activity | _ | Assoc to Many | No |
| Activity_Program | Activity_Program | _ | Restrict | No |
| Transient_Period | R_Transient_Period | _ | Restrict | No |
| Super_Activity | Activity | _ | Assoc to One | No |
| Work_String | Work_String | _ | Restrict | No |
| Borehole_Zone | Borehole_Zone | _ | Assoc to Many | No |
| Borehole | Borehole | _ | Cascade | Yes |
| Borehole_Section | Borehole_Section | _ | Assoc to Many | No |
| Triggering_Event | Event | _ | Nullify | No |