Introduction
Tutorials
Improving a discharge simulation
Contents:
| If you want to | ... then try this |
|---|---|
| learn more about graphs | read on |
| display a graph | look here |
| change how a graph looks | look here |
Graphs are an important part of WellSim, and there are many options to configure the graph, and to import, export and print the graph. There are three types of graph:
QuickGraph An easy-to-use graph of numbers in one data set.
Graphical Results The same as a QuickGraph, but for complex data sets (such as discharge and output simulations).
MultipleGraph Can display data from one data set, from several data sets of the same data type or from several data sets of two different data types.
Follow these steps to customise and then use a graph. Note that Multiple Graph stores default values for many options and will guess options you might need, so in practice you might be able to omit some of these steps:
Select the data sets to display and click QuickGraph, Graphical Results or MultipleGraph read how.
Set up the graph axes to have the right names and orientation and select the series (curves) to display (the series available depend on the data available in the selected data set(s)) read how.
For example, for a graph of pressure and temperature down a well: the vertical axis will be vertical depth, inverted so zero is at the top; the horizontal axes will be pressure and temperature.
While looking at a graph you can quickly zoom and scroll the view, and change axis units on the fly read how.
If necessary, customise how the graph looks. There are many options, for example you can change the font size of the graph labels read how.
Do something with the graph: in addition to looking at the graph, you can print it or export it in many formats, for example as a graphic, as numbers, as XML or as a text file read how.
If required, use special graph procedures:
Transforms These apply a mathematical or scientific function to a series, to produce a new series. For example, you can take a pressure series and calculate a new saturation temperature series.
Time Calcs Compare time-dependent series that have different start times.
Export the graph data to a file of numbers.
Import data to graph from a a file of numbers.
Manually enter your own data to graph, rather than selecting data sets in WellSim.
This section shows you how to select data set(s) to graph and to display the graph, either a QuickGraph, a Graphical Results or a MultipleGraph. If the graphs you see look greatly different from the graphs in these examples, then adjust the graph settings.
Displaying a QuickGraph of a measured discharge profile:
In the sample database, click Measured discharge profiles under 
.
In the top left window, click the profile with description Actual discharge test at 27.5 kg/s.
Click 
(bottom of window):
Displaying a QuickGraph of a measured discharge profile:
In the sample database, click Measured discharge profiles under .
In the top left window, right-click the profile Actual discharge test at 27.5 kg/s and click Edit.
Click 
(top of window):
Click 
to close the edit window.
Some edit windows (such as discharge simulations, output simulations) have Graphical Results, a tab near the top of the window, instead of QuickGraph.
Displaying a MultipleGraph of a measured discharge profile:
In the sample database, click Measured discharge profiles under .
In the top left window, tag the profile Actual discharge test at 27.5 kg/s by clicking the box 
at the start of the profile. The box turns to 
when the profile is tagged:
Click 
:
Displaying a Multiple Graph of two measured discharge profiles:
In the sample database, click Measured discharge profiles under .
In the top left window, tag the profiles Actual discharge test at 27.5 kg/s and Actual discharge test at 32.8 kg/s by clicking the boxes at the start of the profiles:
Click :
Here:
Displaying a discharge simulation and a measured discharge profile at the same mass flowrate:
In the sample database for RK5, tag the measured discharge profile Actual discharge test at 27.5 kg/s**.
Click Graph in the menu bar, then click Apply to 2nd Worksheet.
Tag the discharge simulation WHP=65.2bara,W=27.5 kg/s.
Click Multiple Graph in the toolbar.
Go to Settings. There are two tabs.
In the Discharge simulations tab enter:
In the Measured discharge profiles tab enter the same settings:
Because the dependent axes are the same, there is one graph:
Go to Settings. In the Measured discharge profiles tab, change:
Because the dependent axes are different, there are two graphs side-by-side:
Go to Settings. In the Discharge simulations tab, change:
Again there are two graphs side-by-side:
To exit Multiple Graph, click Return.
Click Multiple Graph in the menu bar, then click Clear 2nd Worksheet. This tells the Multiple Graph to ignore the measured discharge profile you selected earlier (by Apply to 2nd Worksheet).