IDEA FOR PUMPING HYDROGEN AND OXYGEN TO

GEO:

     Two tubes made of SWCNT / diamond

composite with hydrogen/oxygen powered

pumps along the their length. One tube

carries Oxygen, the other hydrogen.   

One square inch of oxygen (in a vertical pipe about 1.2 inches inside diameter) weighs about 16 pounds, before you start pumping. Lots more if you pump the oxygen all the way to GEO altitude. The oxygen pipe would not be strong enough unless it is much thicker (taper) near GEO and weighs thousands of tons. You need a counter weight beyond GEO. Thousands of miles beyond GEO unless it is an extremely heavy counter weight. The pumps would use all the oxygen to oxidize hydrogen, before the column reached GEO.
Possibly we can pump the hydrogen to GEO if we use solar energy or lasers to power the pumps. Hydrogen is 16 times lighter. The buoyancy of hydrogen helps slightly the first 60 miles (at most) after that there is negligible buoyancy. Friction losses inside the pipe are huge, due to the gas moving in the pipe over a distance of 23,000 miles.  Neil