I’m not quite sure what your problem is, besides maybe quantity, but I don’t remember how much you can get out of a single well. However, if I’ve understood correctly, the pump resets the previous ‘delivery height’ the pipeline has and starts always from 0, so placing two mk2 pumps right next to eachother you’ll still get only 50m. The dial in settings shows how high the pump currently pushes stuff, so if you have a pump on a level ground it’ll always show zero.
I know there’s been a bug which caused some pipes to be disconnected from previous one on some cases and rebuilding pipeline will fix that, but I’m not sure if that’s fixed already. Additionally when you start the system it’ll take a while for reservoirs in generators/refineries to fill up, so immediately after connecting everything you won’t get any output on the far end of the pipeline as factories before it will eat up all the production as they fill up and that resolves itself after a while.
So, first, check the input/output quantities of each building you have on the network and verify that you’re producing enough fuel for the generators. Second, try to rebuild pipeline from the point where you don’t have anything even if you should. And notice that refinery doesn’t have steady output, so adding a fluid tank on the line is pretty much necessary for a steady production.