Need help to figure out this problem

[ideaguy126]

First of all thanks for looking at this.

Here's my question. Imagine a grain silo filled with water and I want to put a 55 gallon drum into the bottom of the silo without spilling any water and using as little electricity as possible.

It's not really a grain silo but let's call it a really deep pool that goes up a hundred feet or so. Assume the structural integrity is there for the pool I just need to inject a sealed 55 gallon drum into the bottom of the pool so it floats to the top without spilling water or using as little electricity as possible.

Any ideas? It seems like it would take a lot of power to do this as the water pressure would be extremely high at ground level. If someone can help me accomplish this, I would like to work with you / partner with you and develop a new business. I will gladly share all the details with a signed NDA.

 

[TerryScan]

Construct the drum as follows:
Install a 55 gal bladder inside the drum with a fitting to attach an air line outside.
Have a hole in the top that allows water to escape when the bladder is filled.
Attach weights to the drum as necessary to ensure it is heavier than water when filled.
Fill with water.
Now, you can just lower the drum to the bottom with an air line attached to the bladder fitting.
To make it float to the top: inflate the bladder.