how does CO2 stay in ground after pushing oil from old wells?
917013
The CO2 simply displaces another gaseous product.  CO2 is used because of its low cost, high expansivity, and fairly low reactivity.  Some of it is returned to surface with the gas.  In fact there are wells in Utah that produce 60 % and higher CO2 with the gas.  These haven't been developed due to the expense of separating the two.\n\nOther means of "production enhancement" (what we call it), is water injection to displace gas, hydraulic fracturing to increase the overall reservoir tapped by a single well, chemical treatments to increase permeability of the formation rock, and formation mapping.  With modern computing power and technology, it is possible to drill the hole to the ideal location to tap the best part of the formation.  It is even possible to reenter a hole with a drill, and directional drill to a new formation.\n\nThe idea of oil being derived from geological sources is not new, and actually has some followers (even among those that should know better if its baloney).  What gets me is that it is can't be shown definitively either way.  \n\nIt could also be from sources we haven't really thought of, such as subterranean bacteria.  We only recently have been discovering that bacteria can live in really hostile places, and they do occur in oil and gas wells.  They live in the water on the oil-water interface, and can produce paraffins and sulfides from the nutrients they get in the hydrocarbons.  They are typically thought of as being introduced into the well with the water.
1136335
http://www.ioga.com/Special/crudeoil_Hist.htm\nThat should help.
925494
you're forcing the CO2 out of solution all at once.  because it can only exit through a small opening it seems explosive
509700
All wells have a fresh water spring at the bottom. The water that enters is free to exit, and fresh water from the spring  flows in to replace the water that flowed out. \n\nThe water that is in a well is not exactly stagnant.\nThe water under the  ground is also pure because it is constantly moving through the silt and gets filtered. So the water that comes in is also pure and 'fresh' (though its been around for quite a while!).
203420
Any sort of oil product...Gasoline, Jet fuel, Axle Grease, Kerosene, Asphalt...ect.  The basic idea is simple, you take this crude oil out of the ground (It used to be swamps and such 120 Million years ago) and then heat it up without oxygen.  As you let the temperature come down, specific oil based products condense out.  The graphic on the accompanying page shows crude oil being heated and added to the column.  As the "boiled" gaseous crude oil travels up the column, the temperature decreases, so different products condense out and are pumped away.  (same idea as water condensing on your mirror after a shower---the water was hot, then it touched a cooler mirror and turned back into a liquid)
480070
Good question, oil and gasoline will both be floating above the water, but which one is going to be floating on top the other is a hard one, i'm still searching....\n\n\nI can't find nothing on oil and gasoline, my guess would be that gasoline will float on top of everything.\n\nSo, water then oil then gasoline. It might depend on type of oil too. The best way to find out is to get a clear jar, get some oil and gasoline, see which one floats!\n\nAnd here's some concepts of buoyancy nad density, also gravity...\n\nAny object placed in water has to contend with two forces, gravity and buoyancy. Gravity is the natural pull of an object toward the center of the earth. Gravity tends to pull a boat down into the water. So what keeps it from sinking? Buoyancy acts as an opposite force to gravity and pushes the object up. Archimedes' Principle says that an object immersed in water is buoyed up by a force equal to the density of the water it displaces. The buoyancy of an object is dependent on its density and the density of the material surrounding it. Density is the relationship between mass and volume.
406328
Okay listen carefully,\n\nOil is not found in caves for Heaven's sake! Oil is found inside porous permeable rocks. That means that tiny holes are interconnected together like a network of capillaries. When you pump out the oil there is no real big void left to cave in. Besides water is sometimes found w/ the oil. Since oil is less dense it rides over the top of the water. So if anything fills the spaces left behind it will be water!\n\nNow the ground will cave in where they pump massive amounts of groundwater out of aquifers found in limestone bedrock.\n\nLimestone dissolves due to natural acids such as carbonic acid. Voids or caverns or caves, whichever you prefer to call them are created & fill w/ water. When the water is pumped out, there is nothing left to support the structures above. The ground caves in & poof you have a sinkhole.\n\nSinkholes have been known to swallow whole blocks in cities. Florida is entirely underlain w/ limestone bedrock. The whole state has sinkholes everywhere.\n\nSo don't be concerned about pumping oil out & leaving gaping holes behind. Those you don't have to worry about. You do have to worry about pumping too much groundwater.\n\nTurn off the water while you are brushing your teeth next time.
787726
It will reach equilibrium and never turn to all sodium carbonate.  CO2 and water will be absorbed from the air setting up a carbonate equilibrium with sodium hydroxide.  For all time, if a "closed" system, it will be mostly sodium hydroxide.
563783
Amazing how wrong the answers are below.  The majority of the time oil is replaced by saltwater when an active acquifer replaces it when it is withdrawn.  In some cases, the oil is not replaced by anything and the pressure in the pore spaces is therefore reduced.
9597
Ehh.. oil is pumped from just below the surface. The Core is made of Molten Lava, which isn't too useful a fuel source yet ;)\n\nNow, as for the caverns where we find oil, which is what I think that you're thinking of, those just empty gradually over time. Oil deposits aren't usually so large that draining the oil causes destability. It's the same thing as underground aquifers, which are a lot easier to find information on IMO.
527053
well the oil is under pressure, so when we drill all we are doing is releasing the pressure. Then when the pressure is gone there is still some oil left. sometimes to get out the oil we have to pump water down to force the oil up.\nSo it is not like you are left with any empty space if that is what you are thinking.\n\nthere are no consequences that I am aware of.
12071
Depends on what type of fossil fuel you're talking about. According to the source below, which bases its figures off of the United States Department of Energy, here's what I've found:\n\nConventional oil: 90 years\nNatural gas: 42 years (craaaap)\nCoal: 93 years
464981
It’s a pressure system, using pressure the gas or oil is moved through the system, that’s why you cant have any leaks, otherwise you lose that pressure, and gas and or oil is pumped through the system properly. Also why you have an “Oil pressure” light or picture etc, on the dash, its moved by pressure, and the loss of pressure can lead to major problems.
354476
The USGS has wells that are drilled into the ground at various locations. Some of these have 'real time' measurement capabilities, which means you can go to the USGS website right now and get the actual water level measurement for a prticular well in their database. \n\nWhat typically happens is\n1) you go to a well with a tape measure and record the level of the water from the ground surface. You then can plot this on a map as well as other locations that you collect the data.\n2) For wells with 'real time' capabilities, there is a probe that is permanently in the well. this probe automatically transmits the depth of the water level to a central station where you can access it.
551957
because the co2 is pressurized, meaning the molecules have greater kinetic energy even at the same temperature. when the seal is broken, it depressurizes so the kinetic energy of the molecules can equalize, and so lots of co2 molecules rush out, making a whoosh sound because they cause air molecules to vibrate as they move, making sound.
1119175
First step\nKnow the properties of gases\nCarbon dioxide will turn into a solid while cooling air, so it should be removed. \nAll remaining gases will become liquid when they are cooled. \n\nStep 2\nThe only step to separate gases in the air is to cool them. There are  2 principal ways: By reducing the pressure from standard pressure to lower presure values. OR by decreasing temperature. \n\nMETHOD: Fractional distillation of air should be used. It involves pumping air into a container, after having removed carbon dioxide from it. \n\nCarbon dioxide, being an acidic gas, is removed by passing air through an alkali by bubbling the air through the alkali. \n\nThe air rid of carbon dioxide is then passed through a special and sealed container, where the pressure will be reduced for the gas components to appear as a liquid. On the basis of recorded boiling points of gases, each gas is collected in turn. \n\nCONCLUSION:Thus you have separated the gas mixtures from air. You can use them to propel rockets.
343734
I know that here in Florida we get monster sink holes from pumping all the water out of the ground, and then the emptied cave collapses. Stands to reason it would work the same way with oil.