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 and I want to pump water at a fast enough flow rate to keep the diesel moving down the pipe for 1600m. I've calculated the buoyancy force and the weight of the diesel but I can't determine the minimum flow rate to keep the diesel from rising back up to the surface. Help Please!
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