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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: d[-_-]b who wrote (184159)	3/5/2004 9:08:29 AM
From: hmaly	Respond to of 1574267

Eric.....Re...What is the diameter of pipe you use to get 1/2lb per foot? That is a mistake. All pressures I stated were PSI, pounds per sq. inch, rather than lbs per sq. ft. When you question the diameter of the pipe, you seem to be missing the point, that pressure is dependent upon the height and density, of the material, in this case oil, above the pump. So, no matter what the diameter of the pipe, PSI required to push it up, is the same, except for friction factors, of course. This also neglects the depth into the ground itself. There is a lot of pressure, on the sea bottom also, pushing the oil up, much like you squeeze toothpaste out of a tube. I don't have figures, but my guess would be that it would take far less than the 1500 PSI , total force to push the oil up. The pipes in the system, above the sea bottom, probably are the weak point, as it is likely pumps capacity could easily be built stronger, than pipes PSI rating. However the oil pressure outward on the pipes, is countered by the water pushing in, so all in all, I don't see it as a major problem.