Modulation function for Multilayer wells

Is it possible to apply a modulation function to Multilayer wells? I.e., I would like to add multilayer wells that were constructed after the project start time. The gap in the time series only allows to start extraction at the specified time, but the borehole itself will still be active prior to that time, so the multilayer well will simulate flow through the pipe.

Hi András, Unfortunately, Multilayer Wells do not support Modulation Function. As you say, you can turn off the boundary condition, but the "pipe" is still visible.  At the time of pumping turns off, you could see a rise of the water table along the pipe. But isn't it analogue to what we expect to see in the reality? Best regards Carlos

Hi Carlos. Exactly. Is there any workaround to this problem? I have to avoid using simple wells because my screens are spanning multiple layers, so I indeed need MLWs or equivalent DE + well BC pairs. As the wells were constructed after the model start date, I have to somehow inactivate them until they become truly active. I have tried a few options, but none of them was working as expected. I could of course add a well to each layer that is spanned by the screen, but that's quite laborious and not very realistic. I was also thinking of making two models instead of one, but that's not realistic either as the wells were constructed at different times over multiple years. I wonder if there would be an option to change the permeability of the pipe or its geometry using time-varying properties or something similar? It doesn't, however, seem to be possible directly from within the GUI. Any clues to try are welcome. András