The Wells view

The Wells view is used to set the wells up in the model.

The first tab on the well view contains the well table. The well table is a master list of all wells in the simulation case. It also describes connections from each well to the upstream workflow.

Wells tab

Active  When checked indicates that well is active. An inactive well is not written to the deck.

JewelSuite Source Well  Wellbore to be used for extracting input (e.g. perforation data) for the simulator. Note that the name is derived from the 'Name' field in the Well Table > Well head tab and that the main wellbore of this well is used to extract the data.

Name  Name used to be used in the simulation. This name is initially derived from the 'Short Name' in the Well Table > Wellheads tab.

VERT  Option to select vertical well.

Block I  The index of the I block this vertical well is set.

Block J  The index of the J block this vertical well is set.

Inj?  Indicates an injection well.

WI Method  Selected Well Index method.

Historical Data Well history category in upstream workflow to which well is connected.

Historical Data Well Well history subcategory in upstream workflow to which well is connected.

BHP  Name of variable in well history to use for BHP constraint.

WHP  Well head pressure.

STO  Surface oil rate.

STG  Surface gas rate.

STW  Surface water rate.

STS  Surface solvent rate.

STL  Total surface liquid rate.

WellGroup  Well group to which the well belongs.

Well Configurations tab

The Configuration tab contains elements related to the configuration of the wells. Configuration data can change over time but is generally defined at time 0 and does not change frequently.

Well  Well name.

Date/Time  Assigns a time step to the well.

WellType  Assign the well type that is submitted as part of the deck to the IMEX™ simulator.

WellTypeOptions (IMEX™ and STARS™ simulator only)  Injector weighting method.

Several other columns can be added to the table.They are listed in a floating window and you can drag them into the table.

Injection Composition tab (For IMEX™ and GEM™)

The Injection Composition tab is used to define the composition of the fluids for the injectors. only the well, date and time, and phase of the well need to be defined.

Injection Fluid tab (For STARS™)

For STARS™, you specify the number of components and the associated component mole fractions of injection fluid.

Well  Well name.

Date/Time  Specify the time for the well.

Phase Select the injection fluid phase.

Number of components Enter the number of components.

Composition Click on the ellipsis to open the composition dialog. On the dialog, enter the fraction value of each component. Click OK once you have entered the values. The fractions are normalized if they do not add up to one.

For an injection well, you must specify the injection fluid phase, number of components and composition.

Temperature Specify the bottom-hole temperature of the injection fluid.

Steam Quality Specify the steam quality in the injection well.

Pressure Specify the bottom-hole pressure of injection fluid.

Perforations tab

The Perforations tab is used to specify the location of the well completion grid blocks. The table in the lower half of the view is dependent upon which well is active in the table above.

Well  Well name.

Date/Time  Specify the time for the well.

Perforation Type  Select the perforation type, one of WI, GEO, GEOA, KH, or KHA.

Direction  Specify the direction of the well.

Rad  Specify the wellbore radius.

Geofac  Enter the geometric factor for the well element.

Wfrac  Define the fraction of a circle that the well models.

Skin  Specify the well skin factor.

TURB  (For IMEX™ and GEM™ only) Turn the turbulent skin effects on or off.

Equation Type (For IMEX™ and GEM™ only) Specify the equation type.

Perforations Definition tab

Status  Specify the status of the perforation. One of OPEN, AUTO, or CLOSED.

Connection  Click the ellipsis button to open the Flow Connection Edit dialog, where the flow direction and layer can be defined.

I  Define the I block of the perforation.

J  Define the J block of the perforation.

K  Define the K block of the perforation.

LENGTH  Specify the perforated length of the deviated wellbore.

X1  Specify the first level completion block (I).

Y1  Specify the first level completion block (J).

Z1  Specify the first level completion block (K).

X2  Specify the second level completion block (I).

Y2  Specify the second level completion block (J).

Z2  Specify the second level completion block (K).

DI  Specify the D factor.

FF  Specify the partial completion factor.

WI  The well index.

To edit this column delete the ‘Source’ well assigned to this well on the Wells tab. When a "Source" well is assigned, the Well Index values are automatically calculated using the parameters defined for the ‘Source’ well.

Well Constraints tab

The Constraints tab is used to define constraints for each well.

Well  Select the well for the constraint definition.

Date/Time  Specify the date/time for the start of the constraint.

Status  Specify the well status.

Parameter  Specify the well parameter. The options in this column are dependent upon the selection in the Status column.

Limit/Mode  Specify either MIN or MAX for the constraint.

Value  Enter a value for the selected parameter.

Action  Indicate the action to be taken if the constraint is violated.

ActionArgs  Specify the argument, if any, for the constraint action.

Primary  Indicate if the constraint is the primary constraint.

Penalty  Indicates if the well is to be penalized for overproduction.

PenaltyArgs  Additional parameters for the well penalty.

Separators tab (GEM™ simulator only)

The Well Separators tab contains one table used to specify the separator through which the produced fluids are assigned surface stream compositions, molar rates, and volumetric rates.

Each row in the left hand table defines a separator region.

Name  Name of the well separator. Used internally, not generated in the deck.

Active  Indicates that this Separator is used for building the deck.

Wells  Specifies the well numbers of the wells to which the current separator applies.

Time  Time for when this Separator applies.

Clicking on the button for Wells opens the Well edit that allows you to select the wells for the current separator.

The top table defines the stage separator. The longer format for the SEPARATOR keyword is used; however the shorter format is also accepted. To use the shorter format, only Pressure and Temperature need to be entered in the stage table. The destination of the liquid output of stage n is the feed of stage n+1 or the OIL stream if stage n is the last stage; the destination of the vapor output of all stages is the GAS stream.

Stage #  The stage of the current separator to which the stage output whose destination is being specified is fed. The stage # must be larger than the stage number of the current stage. This value is not editable and is not written to the deck.

EOSSET  The EOS parameter set to be used for the stage flash.

Pressure  Specifies the separator pressure.

Temperature  Specifies the separator temperature.

Liquid Output To  Introduces the destination of the liquid output of the current separator stage.

Middle Output To  Introduces the destination of the middle output of the current separator stage. Only valid for PLANT stage types.

Vapor Output To  Introduces the destination of the vapor output of the current separator stage

The bottom table defines the stream separator.

Stream Name  Stage outlet destination names; options available are:

OIL  

INL  Stands for Intermediate Liquid Stream.

GAS  

WTG  Wet Gas Stream; available when used for density calculation specification.

Mass Density Calc. Method  Specifies the calculation method for mass density.

EOS Set Number  The EOS parameter set to be used for the stream density calculation.

Gas Law Relation Z-factor  Specifies the value of the compressibility factor Z to be used in the density calculations. Can only be used when the GASLAW option is used in the mass density calculation method.

Pressure  Specifies where the pressure for density calculation is done.

Root of the Cubic EOS  Specifies which root of the cubic EOS is used to compute the stream density. Root options include:

LIQUID

VAPOR

GIBBS

Density Table Num.  Specifies the number of the density table being used.

Temperature  Specifies where the temperature is done at for a single-phase EOS density calculation.

Triggers tab

The Triggers tab allows you to define a point at which you can test a condition of the simulation. The table in the left pane of the view controls the active trigger.

Name  The name of the trigger, taken from the table in the left pane.

Define at date  Select the date for the definition.

Definition  There are five parts to the definition:

  • Select the trigger to test.
  • Select the well to test the trigger on.
  • Select the parameter of the trigger to be tested.
  • Select the operator for evaluation.
  • Specify a value to test against.

Actions  Enter the action for the trigger.

OUTSRF SPECIAL (For STARS™ only)

On this tab, you can assign wells for extracting additional information such as energy rate, conduction rate and steam quality which can be used in thermal as well as geothermal applications.

The tab has two columns. First column lists the Keyword and in the second column you select the Wells you want to use the keyword for. The keywords are:

WELLENERGY RATE Rate of enthalpy of the fluid stream of the well.

WELLENERGY CUM Cumulative enthalpy of fluid stream of the well.

WELLCONDUCT RATE Net rate of heat conducted into the well.

WELLCONDUCT CUM Cumulative net heat conducted into the well.

WOR INST Instantaneous water-oil ratio of the well.

WOR CUM Accumulated water-oil ratio of the well to date.

STMQUAL (valid for injection wells only) Quality of injected steam at the well perforations.

To use a Keyword for a select number of wells, click on ellipsis button in the Wells column to open a wells selection dialog showing the selected keyword and associated wells. On the dialog, click again on the ellipsis to open the Tuple Edit and select/deselect the Wells and click OK to make changes. Click OK again to close the dialog and continue with other keywords.