Fluid properties

On this form, the fluid properties can be defined per compartment. These values are optional, and this form serves as a means of storing fluid property data for the compartments in your model. In the Volumetrics Study workflow (model > Volumetrics) these values are used to generate compartment-based 3D grid properties. The fluid properties are used for volumetrics, and saturation modeling.

  • Name  Name of the compartment, read-only.
  • Zone  Name of the zone, read-only.
  • Fluid Leg  Indicates the type of fluids present in a compartment, read-only.
When hovered over the Name, Zone and Fluid Leg headers, the small filter icon () allows you to control the information display.
  • Formation Volume Factors  Formation volume factor for oil, gas and water (Bo, Bg, Bw)
    • Uncertainty   The parameters Bo and Bg can be propagated as parametric uncertainties in a probabilistic volumetric calculation with the study strip. Click the uncertainty symbol next to the Bo and Bg entry field to open the Uncertainty Parameter dialog. For how to use the controls on the dialog, see The Uncertainty Parameter dialog. For information about parametric uncertainties and how to use them in JewelSuite Subsurface Modeling, see Incorporating uncertainty in static or dynamic modeling.
  • Ratios  Solution gas-oil ratio (Rs) and vaporized oil-gas ratio (Rv)
    • Uncertainty   The parameters Rs and Rv can be propagated as parametric uncertainties in a probabilistic volumetric calculation with the study strip. Click the uncertainty symbol next to the Rs and Rv entry field to open the Uncertainty Parameter dialog. For how to use the controls on the dialog, see The Uncertainty Parameter dialog. For information about parametric uncertainties and how to use them in JewelSuite Subsurface Modeling, see Incorporating uncertainty in static or dynamic modeling.
  • Densities  In-situ oil, gas and water densities (ρo, ρg and ρw)
  • Interfacial tensions  The interfacial tensions between oil-water and gas-water (σow and σgw)
  • Contact Angles  Cosθ for oil-water and for gas-water, where θ is the wetting angle (cosθow and cosθgw)
    • Important   Note that the values for density, interfacial tension and contact angle either must be entered for all or must be left blank for all. The saturation model cannot be validated if these values are filled in partially. The cells missing a valid value will show an error sign (). Hold the cursor over the error sign; an explanation will appear in the form of a tooltip.
  • Simulation Input (To enable these columns, the 'Enable fluid model as simulation input' checkbox at the top of the table on the Fluid Levels form must be checked.) See Fluid Levels > Simulation Input for why and when to use these columns.
    • Active  This setting is inherited from the Fluid Levels form and read-only.
    • PVT Region ID  For each 'active' compartment, enter a PVT region ID. A region ID must be an integer, and the minimum value must be 1. The ID does not need to be unique, you can use one value for multiple compartments. If you use different values, the entry in the next row should be 'value of the row above +1'.
    • Important  After you have created the 'Initialization Region IDs' (with the Fluid Levels form) and the 'PVT Region IDs', in order to carry fluid model information forward to your simulation case, make sure to map your fluid model to the relevant 3D grid with the Fluid Model Grid Properties tool (model > Fluids > Tools > Output Tools > Fluid Model Grid Properties). This will generate the required 3D grid properties 'Initialization Regions' and 'PVT Regions', which can be selected in the Simulation Concept that you assign to your simulation case.

To set the fluid properties per compartment

  1. Select the fluid model of interest.

  2. Click on the cell and type the value for the corresponding fluid property.

  3. Click OK to save the values entered and proceed to Pressure Overview, or click Apply to save the values and keep the form open for additional work.