Editing an existing configuration can be done from any of the edit pages (editors) in your configuration:
When editing a configuration, a set of validation rules will automatically be applied to secure that the configuration is still valid for the computer model to initialize and run. If one or several of the input parameters are outside the acceptable range, you will be given a warning along with a message. The message will guide you to the locations where the input parameters need to be corrected. If you want to go back to the last valid version, you can reload the page (press F5 on the keyboard or reload page on tablets), or click the “Reset all” button in the error message:
Be aware that if your configuration has already been used to create a simulation, any changes to the configuration will create a new version. Previous configurations along with corresponding simulations are stored and can be viewed in the Configuration sidebar, located as a pop-up menu on the right side of the edit pages.
In the Hole Section editor, you can edit lengths and diameters of the riser, casings, liners and open hole section. Just click on any element on the figure, and you will see the table in which you can edit. It is not possible to import any data for this editor, so you must edit manually. In this editor you can easily get validation errors. If you edit e.g. an inner diameter (ID) that does not allow any other casings to be run inside, you will be given a warning. You will be given warnings that are related to this editor, or it can be from other editors in the configuration that are affected. We hope that the error messages guide you to the right place for correcting errors in your configuration.
The front page of the Wellpath editor shows the trajectory of your well. The plot can be zoomed in/out with the mouse wheel scroll, rotated with left mouse click movements, and moved with right mouse click movements. The different colors on the trajectory refer to the dog leg severity (DLS). To edit the wellpath, push the Edit button:
For the Wellpath editor you have the possibility to import the survey points from a CSV file (see Chapter 6). You can edit manually as well, but beware that there are limitations on the dog leg severity (you will get an error message if the DLS is too high). Usually there are many survey stations, so the table is collapsed by default. To see all the stations, click the expand arrow, , in the middle of the table.
In the Fluid editor, you can edit two fluids, Fluid 1 and Fluid 2, by pressing the Edit button. Both fluids are based on templates which can be modified to your choice of mud. The density of the mud can also be changed during simulations, but the value you enter in the Fluid editor is your default value.
The drillstring, bottom hole assembly (BHA) and bit can be edited by clicking on each row. The BHA elements can be selected from a drop-down menu by clicking the + sign. Some elements in the BHA and drillstring also have some additional parameters that can be found by expanding the drop-down arrow in the lower right corner of its respective table row. This editor is also likely to give you 8 validation messages when you start editing. Hopefully the messages will guide you to the right locations to change your configuration into a valid configuration.
If you want to add along string measurement nodes to the drill string, you can enter the + button and choose ASM among the components. On the simulation graphs you will then be able to read the simulated pressure value from this sensor.
The geology editor contains three sub editors:
The geopressure profiles define the pore pressure and fracture pressure at any depth along the wellbore. You can list these profiles as functions of the True Vertical Depth (TVD) or as functions of the actual well-path Measured Depth (MD).
To edit the geopressure profile, click the Edit button. The profiles can be edited manually or by importing from a CSV file (see Chapter 6). Beware that when creating a new simulation, you are asked if you want to use the geopressure profiles as limits for the kick and loss simulations.
The geothermal profile is given as temperature gradient as a function of depth. This profile is used in the dynamic temperature calculations and to model e.g. the rheology and density of the drilling fluid at any depth of the well. To edit the geothermal gradient values, click on the Edit button. The profiles can be edited manually or by importing from a CSV file (see Chapter 6).
The formation strength is used in calculation of weight on bit (WOB) for a given rate of penetration (ROP). Formation strength is given by the unconfined compressive strength (UCS) as a function of depth. If no UCS values are entered, a default value of 100 is chosen in the simulation.
The Rig editor is where you can change input parameters for the different equipment that are affecting the fluid flow and drill string dynamics. When you hover over the figure, you can see which components are editable. Click on one of them (or click the Edit button) to open the input table to make any changes. Note that entering the traveling block weight is optional.