Hi all123enen sent me some info on Enhanced Oil Recovery with...

Hi all
123enen sent me some info on Enhanced Oil Recovery with some links
Thought i would share with those like me who are still getting there head around all the oil stuff and how it all works

Cheers

Enhanced Oil Recovery
The first method involves using enhanced oil recovery technologies (EOR). This can extend proven oil reserves and raise the rate of recovery. This can involve injecting gas or chemicals into the well, as well as thermal recovery methods.
Gas injection is the most popular technique. Whether carbon dioxide, natural gas or nitrogen, the gas expands and effectively moves the extra oil to a wellbore. The gas dissolves into the oil and raises the flow rate by decreasing viscosity.
The thermal recovery technique involves heating the oil (typically with steam) to improve flow rates. Chemical injection with polymers is also used to improve oil flow rates.


The third stage of hydrocarbon production during which sophisticated techniques that alter the original properties of the oil are used. Enhanced oil recovery can begin after a secondary recovery process or at any time during the productive life of an oil reservoir. Its purpose is not only to restore formation pressure, but also to improve oil displacement or fluid flow in the reservoir.The three major types of enhanced oil recovery operations are chemical flooding (alkaline flooding or micellar-polymer flooding), miscible displacement (carbon dioxide [CO2] injection or hydrocarbon injection), and thermal recovery (steamflood or in-situ combustion). The optimal application of each type depends on reservoir temperature, pressure, depth, net pay, permeability, residual oil and water saturations, porosity and fluid properties such as oil API gravity and viscosity.Enhanced oil recovery is also called improved oil recovery or tertiary recovery and it is abbreviated EOR.
http://www.fossil.energy.gov/programs/oilgas/eor/index.html

http://www.shell.com/home/content/innovation/meeting_demand/getting_more/eor_ccs/eor.html

http://www.google.com.au/search?hl=en&q=enhanced+oil+recovery&start=0&sa=N