A well is a very big hole dug in the ground.
Sometimes it contains water, some times it contains oil and
sometimes it got Carbon-Di-Oxide gas mixed with water. The oil wells
turn to give sub normal output, after its continuous use. The
Carbon-Di-Oxide injection helps in recovery of more oil from the
well. The addition of Carbon-Di-Oxide gas through injection (of gas)
some times gives extra oil by about 30-40%.
The injection of Carbon-Di-Oxide does the following :
- Reduces the viscosity of the oil and allows it to come out
and flow easily.
- The C02 gas mixes with the oil like water and the oil becomes
carbonated and expands forcing the oil to come out of the tight
openings in the rock and to waiting extraction wells
- The mixture of oil and Carbon-Di-Oxide also dissolves some
rock thus making it more porous which results in more yield of
oil.
Since there is lot of Carbon-Di-Oxide which is used in the
wells, therefore, the cost of Carbon-Di- Oxide is also to be
considered. There is a talk of using C02 from the boiler flue gases
after enrichment with a membrane. We supply co2 recovery from flue
gas and co2 recovery systems.
Since the quantity of C02 used in the wells is considerable and
hence one can be sure of getting recovery.