Thanks for your reply dcasto. I assume you meant Prandtl and Froude? Anyways, that velocity sounds quite reasonable compared to what we're actually using right now. However, I need calculations and numbers to prove it. Were there any calculations behind that number or was that just from experience.
I'm trying to determine the minimum flow rate required to ensure our blanket fluid makes it to the well cavern and does not come back up to surface. Say I have 1 cubic meter of diesel (density of 835 kg/m^3), and I'm pumping it down a pipe with a diameter of 0.0620014m. The pipe is full of water...