Rock Flow Dynamics releases tNavigator 21.1

Rock Flow Dynamics released the first update in 2021 of the tNavigator software package. Version 21.1 is now available to users. Updates and improvements affected the simulator kernel, AHM and Uncertainty module, Geology and Model Designer, PVT Designer, Well and Network Designer.

The key new features are:

  1. In simulation kernel:
    • For E1/E3 models: filtration according to the non-linear Forchheimer law is now supported (the keywords VDFLOW / VDFLOWR). It accounts for the inertial effects of the fast flow in highly permeable regions (like fractures).
    • A way of fracture shape specification via a point set is now available.
    • The function for editing grid properties grid_arithmetic() now has an optional parameter, lgr_name, which specifies an LGR to work with.
    • Python scripts in SCHEDULE can now access grid property statistics (the .compute_statistics() method of the Grid property object in the user code).
  2. tNavigator graphical interface
    • Graph Calculator in Simulator Graphical Interface, Model Designer, and Geology Designer can now access grid property statistics (the .compute_statistics() method of the Grid property object).
  3. In the Assisted History Matching and Uncertainty module:
    • When launching a matching process from Model Designer, matching to the RFT data is now supported.
  4. In Geology and Model Designers:
    • The creation of folders for well filters is now supported. Allows grouping of well filters by specific criteria, such as the wells for a cross-section, the wells with geosteering data, etc.
    • A table can now be visualized in graphic form in the Histogram tab, with adjustable captions on its columns and rows.
    • A table can now be added to Page Layout.
  5. In Geology Designer:
    • An option to assign individual colors to markers and other objects in the objects tree has been added, which allows sorting objects by color, improves visual perception of large data arrays, and greatly speeds up the search for the selected marker.
    • A new option named Use Minimum Zone Thickness has been added. The option helps exclude (collapse) zones whose lengths and thicknesses are less than the user-defined ones.
    • A new dialog is available allowing the calculation of a proportion table of layer thicknesses within a grid by a given well log.
    • A schematic representation of a trap may be displayed on a crossplot.
    • A new interpolation method has been added: the Gaussian Random Field Simulation (GRFS).
    • A new 2D interpolation algorithm, the Nearest Point method, has been added.
  6. In Model Designer:
    • The first implementation of a new graphs tab is available: Graph Templates.
    • The production tables for groups of wells may be imported in Field History File format.
    • Hydraulic fractures modeling:
      • Dependence tables of permeability versus pressure and flow functions for a proppant are available;
      • Hydraulic fractures may be specified and exported as an arbitrary point set;
      • PI mults and decreases of permeability overtime may be taken into account for various stages of hydraulic fracturing;
      • The mutual influence of fractures and the possible deviation of destruction can now be customized.
  7. Well Designer, Network Designer:
    • Single-phase injection networks are now available.
  8. PVT Designer:
    • Recombination of reservoir fluid from oil and gas compositions is now available.

A full list of improvements can be downloaded from theĀ link.

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