Steve, the waste water that is injected back into depleted wells is very well documented. Each oil/gas well that is drilled is surveyed and logged many times during it's productive life. When it's no longer productive and the owners want to switch it's service to a disposal well it is again surveyed and logged. When an underground salt cavern is to be used for any storage, most are used for Natural Gas/propane they are hollowed out by pumping vast amounts of water into them to dissolve the salt and the brine is disposed of in the injection wells. There are literally thousands of these wells across Texas. All very well documented and under the control of the Texas Rail Road Commission.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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