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quote:Originally posted by another_someoneI do remember asking, I think it was somewhere on TNS, but I cannot find it at present, about using geothermal energy from potential volcanoes and super-volcanoes in order to cool them down (while providing us energy), thus delaying their inevitable eruption.George
quote:Originally posted by LaithIf we dig deep enough to reach the lava would the pressure push the molten lava up like a volcano?
quote:Originally posted by Laithwhat matter could be used for the drilling machine (i.e. what doesnt melt or burn from lava)?Laith
quote:Originally posted by neilepWith non contact drilling the shaft will need be reinforced somehow unless the nature of the drilling will create a clean & secure surface, effectively creating a solid pipe from the very material you're drilling through.What about diamond coating ?I can see how a non contact drilling would be preferable....very little in the way of wear and tear compared to conventional drilling and far more pliable in use than physically drilling hundreds of miles which in no doubt would pose many issues and problems where the drill would have to be retracted.
quote:Originally posted by JimBobI must agree with Bass. Not likely due to the high pressures which increase viscosity so much.
quote:Originally posted by JimBobWe already have these holes to the mantle. They are called mid-ocean ridges and there is no massive pressure release there.
quote:Originally posted by tanianAnyway, what do you think are the chances of finding unique elemental materials at lower depths?
quote:Originally posted by pignutOn a slightly different tack, the earth is very big, very heavy, spinning and orbiting the sun at an extremely high speed....maybe we just need to attach the earth to a very big dynamo :-)
quote:Originally posted by neilepHello all,What a wonderful day !!..I know our ability to drill deep into the Earth is very very limited...but do you think as our progress continues to dig deeper, that the heat of the planet could be a source of energy ?whajafink ? Men are the same as women, just inside out !
quote:I was thinking either of some very aggressive cooling
quote:With non contact drilling the shaft will need be reinforced somehow unless the nature of the drilling will create a clean & secure surface, effectively creating a solid pipe from the very material you're drilling through.
quote:Maybe pump coolant down a channel, and into the space between the drill mechanism and the bore hole wall, and then use acoustics or magnetic fields to push the coolant away from the drill mechanism, thus simultaneously ensuring that hot coolant it kept away from the drill mechanism, and that the drill mechanism stays away from the bore hold walls.
quote:Another option would be to have two or three large wheels, or cylinders, around the drill mechanism. The wheels will be constantly rolling around the perimeter of the bore hole.
quote: They would both smooth out, and compact the side of the bore hole, as well as ensuring the the drill mechanism itself is kept away from the sides of the bore hole.
quote: Because they are large diameter wheels, only a very small proportion of the rim is in contact with the wall at any one time, and since it is constantly rolling, that small part is never in contact for very long, and so will not absorb a great deal of heat. It will still be necessary to aggressively cool the wheels, but they need to actually have any part that will get that hot, so long as the heat can effectively be dissipated from those parts of the wheel that are not in contact with the wall, so they are cool enough once they come back in contact with the wall.
quote:I very much doubt drilling mud would be capable of cooling much above 350 degrees F. The drilling fluid (even if oil-based) would vaporize very quickly, causing a gas bubble down-hole. This is a very bad thing. The rapidly expanding gas from the phase change causes the mud above it to be blown back up the hole and the well becomes unstable. People get killed on the surface when something like this happens. Not many peoole in their right mind would even consider continued drilling to be possible, much less safe.
quote:Originally posted by diegostationIf we use energy from earth's core until it runs out and the core freezes the impact would be the death of all live forms on earth cause the planet would lose its magnetic field