What happens to that huge hole..........?

Question

...left underground when all the oil is sucked out of the well?

Answer 1

Hiya !

The type of rock that oil is found in is porous like a sponge.

While the oil is extracted, the company pumps water down the well (which is more dense than the oil) to replace what's come out.

Answer 2

As petroleum is pumped out water is pumped into the well. This keeps pressure up and makes  the petroleum easier to pump. Some wells don't need any help when there is sufficent pressure. Also in really deep wells a collapse isn't a worry.

Answer 3

In most places it fills with water. Some people pump in hot water or salt water to squeeze out he last of the the oil.

Answer 4

when the well no longer produces or produces so poorly that it is a liability to its owner, it is abandoned. In this simple process, tubing is removed from the well and sections of well-bore are filled with cement as to isolate the flow path between gas and water zones from each other as well as the surface. Completely filling the well-bore with concrete is unnecessary and cost prohibitive.

Answer 5

there isn't a cave filled with oil, so no real hole is left.  the grains provide the structure, the framework, so only modest compaction occurs, a lot less than the volume of the removed oil.  The open spaces are usually filled in by water coming from the surrounding rock.

Ever drink a drink that was filled with crushed ice?  Say, a slushy?  the ice doesn't collapse completely when you suck out all the liquid.