Do the companies who drill for oil, replace the oil taken out of the ground with water or some other substance

There are two different processes for getting the oil out of the ground.





In the simplest method, the oil flows on it's own from the underground reservoir into the wellbore and then to the surface. This is caused by either the higher pressure in the oil itself causing the oil to move into the well (i.e., it moves from areas of higher pressure to areas of lower pressure) or by the natural water drive pushing the oil into the well.





Companies learned from this second method and sometimes use it to extract more oil from the reservoir than would have been possible naturally. This ';secondary recovery'; method is usually accomplished by injecting water or gases into the reservoir to create an artificial method to drive the oil into the producing wells.





Normally, nothing is done to replace the produced fluids (which might be oil, gas or water) that come out of an oil well. Occasionally, there are wells in which fluids are injected down hole for either secondary recovery (as mentioned above) or to dispose of certain fluids underground after approval by regulatory authorities.





Subsidence of the surface can occur as hydrocarbons are produced, but the usual cause is withdrawal of ground water which is typically found at much shallower depths than hydrocarbons. This was once a common problem in some areas such as Mexico City and Houston, TX.





Once the well is no longer needed, the well bore itself has plugs placed in it and then the well is filled with special cement to prevent fluids from underground to escape into shallower zones or to the surface.Do the companies who drill for oil, replace the oil taken out of the ground with water or some other substance
Nope as when we remove the oil, the water that is down there naturally replaces the pore space between the grains of rock where oil once was.Do the companies who drill for oil, replace the oil taken out of the ground with water or some other substance
The answer of this question is no. The Operating companies do not replace any fluid. But Mother Nature does!!!





Once the oil is produced or recovered by primary or secondary means, reservoir water or gases takes the place of the oil in the reservoir pore.





Rgds
No. The oil is located within porous sandstones, limestones and other rock sources. These reservoirs usually cover such a large area that pumping it out does not cause any significant topography changes. During drilling they usually use a viscous mud as a way to prevent blowouts and lubricate the drilling bit.
. The ground does not settle due to oil removal. The oil exists in the spaces between the rocks and mineral grains. After the oil field has been allowed to push oil out by natural pressure, water may be pumped in to push oil out, but this is to increase the yield of the well, not to prevent settling.


. If the oil were close enough to the surface for its removal to cause settling of the ground, the oil would have risen to the surface due to its own buoyancy without anyone having to drill for it.
Sometimes.
In the good ol' days, they did not replace with anything, this caused the ground to settle. I have seem some funny pictures of fire hydrants sticking up 20 ft in the air.


I think some reinject water, I think the future is to inject CO2.
Finally, 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.