Project Main Details
How to Use tNavigator tutorial contains an information how to open and run your model.
We will analyze 2D and 3D maps, graphs for groups, wells and connections.
Now we can see tNav main window. In one graphical interface we can open existing hydrodynamic model, work with assisted history matching
or build a new model from scratch in Model Designer.
tNav uses automatically for model calculation all computer cores but we can set the number in the drop-down menu if we want to.
Press file Open to open your model. E100 format is opened for default. To select another format use Open As.
Switch between E100, E300, IMEX, STARS and MORE model format types.
We see model loading process on the screen.
tNav has option panel on the left, visualization panel on the right and a log panel.
Model files are available from Files menu. Included files. Log file contains all the information about model loading and calculations.
Press at any file to open it in the text editor.
The general information about the model is in the Definitions tab.
Model's dimensions, amount of active grid blocks and number of wells.
To see the model we go to Maps tab. On the top switch between 2D view, 3D or Histogram.
Hold left mouse button to rotate the image, hold right button to move it and scroll mouse wheel to scale.
Move time slider on the top to see field development history. Wells appear at the time step when they are drilled.
To see model properties go to Initial maps. We have porosity, permeability and so on.
At calculated properties we have pressure and phase saturations.
Go to Resources to see oil-in-place, mobile oil-in-place and gas-in-place.
In Regions tab you can analyze pvt, saturation, equilibration regions and other.
tNav has very powerful user arithmetic. Now let's calculate mobile mass oil in place in top layers of our reservoir.
We go to Resources. Mobile oil in place mass. Then press Map Statistics button on the right panel. Entries is a number of
active grid blocks and as Sum we can see mass oil in place for our field.
Now let's select the top layers of our field. Go to user cut. And open the calculator to add a formula in map arithmetic
command line. I type k less than 30 to select top 29 layers of my field. Press Enter or Apply. No the layers that
we are interested in are selected with red color. Blue color - other layers. Check Use cut to visualize only selected
layers. Then for all maps we will see only selected layers. Now let's go back to Mobile oil in place mass.
Statistics now is calculated only for these blocks. And if we uncheck use cut - statistics we be back for all grid blocks.
Now let's work with tNav palette. Hold left mouse button to move color's border up and down.
Do right mouse click to see all options. Add a new color if you want. And you can always get back to default view by selecting
Saved palette. Default 5-color palette.
Set discrete palette to have one color for a range of map values. Or standard continuous palette.
Let's run model simulation by pressing the red button on the top menu. Switch to calculated maps to analyze in dynamics
pressure and saturations distribution.
You can easily stop calculations by pressing blue square on the top. Or even close or reload you model.
Calculation results are saved automatically. The period is underlined with a red line. Move time slider to
the last calculated step and continue simulation.
Open computer resources monitor to see that all cores a involved 100%.
Press at any grid block to see parameter value in it below. Or do right click to select Block Statistics. Values of
all initial and calculated parameters for this block in dynamics.
We can create any number of model view by pressing Create new view button. A new window can be moved to the second screen
if we have it. For example there we can analyze Properties. Relative permeability curves for oil and gas, PVT data and
equilibrium for different regions.
In another window we can go to Graph tab. We start with Rates.
Deselect all by pressing red cross on the bottom. Then check parameters you need: oil rate, historical oil rate,
water rate and historical water rate.
Graphs are available for groups, field and for wells as well. Press a triangle to open well list and switch between wells.
Open the list of well's connections and see the graph for each connection.
The same we can do for Totals to see oil, water, gas total for wells and groups.
In pressure tab we can analyze field average pressure and bottom hole and tubing head pressure for wells.
All tables can be easily copied to Microsoft Excel. Press on the top left corner on the table to select it, do copy
and then paste to Excel.
Now let's make vertical cross section of the model. Press Create a Cross-Section button. Then do to mouse clicks
on the model to see the plane. You can move and rotate this plane by the corners. To see this cross-section
switch to 2D map. In the drop-down menu we can see 2d maps: Roof, Layer, Sum, Average. Cross section is the last one.
Move the time slider to playback results.
Now I select Average type. 2D map can be colored by grid blocks or by contour lines. Press
Settings to edit its' properties.
Enjoy working with tNavigator and see other training tutorials for more details.
Thank you for attention!
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