Sebastian Köln wrote:
Could you flush the sand out periodically? (By placing a smaller hose/pipe in the well pipe and forcing enough water into it, that the uprise of the water is higher than the speed at which the sand falls down.)
Alternatively maybe a pump that tolerates sand? And then separating it above ground in a big tank?
James Freyr wrote:Hey thanks Scott! I wish I knew how far down the bedrock is. I think the only way to find out is to send the drill bit back down and keep going, but unfortunately I don't have a blank check for this endeavor. I'm pretty confident that there is some sort of engineering solution to keeping the sand and sediment out of the casing and creating a column of good water I can pump out. I imagine this situation can't be unique and people have drilled sand holes before and found a way to deal with it. I'm just kinda ready for this to be finished and not keep dragging on. Hopefully a solution is found in the next couple weeks.
Miles Flansburg wrote:James, Just wanted to do some brain storming but everything I ask might be really stupid so take this with a grain of...sand.
I am trying to visualize what this looks like underground. Seems that there is a formation that is almost like mud? Like an underground river or pond that has a lot of sand/silt in it? Does the sand/mud settle out or is the underground reservoir an emulsion of sorts? I wonder if the drillers can pump the well at a max rate , one that would begin to suck the sand out forming a void underground. Moving a bunch of the sand/mud to the surface. The recharge rate of the water would begin to refill the void. The trick would be to find a pumping rate that would not move sand from farther away from the well hole thus just refilling the void with sand. Seems to me that if you could ever create this void and then pump just enough water out to not create an underground flow, which would carry more sand with the water, you might be able to solve the problem?