What do the engineers replace drilled oil with?

Water, gas or most recently CO2. Sometimes it is not necessary to pump water or gas, it permeates naturally. Sometimes the oil sands just compacts.What do the engineers replace drilled oil with?
they fill it with the b-s that comes out of george bush's mouth.What do the engineers replace drilled oil with?
Actually , i have read some info that says a few oil fields are replenishing themselves! It's called ';Abiotic'; or ';Ambiotic'; oil, and somewhere in the gulf of Mexico where we have drillings. Can you imagine? The claim is that there is NO shortage.
Sometimes nothing! Sometimes air, gas, chemicals or water in order to either pressurise the well more or move oil from one chamber to another.
i am not exactly sure just what you mean, but, i have heard that for years the u.s.a. is filling old empty wells from oil we buy from overseas. most of them remain as huge storage tanks, so to speak, if we ever have another disaster such as a world war, we would not be caught short on oil. i hope this is what you were looking for today.

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