Chemical that reacts with CO2 for extra oil production

[Malkara]

Hi to everybody,

We produce 12 API oil by injecting CO2 into the reservoir. we wonder if we inject a chemical that reacts with CO2 bringing heat what will happen? I mean, we can get extra oil by decreasing oil viscosity with this heat.

Does anyone help me with this subject ?!

Thank you for your consideration !

 

[Unotec]

I always thought that the CO2 injection was to lower the oil's viscocity having the CO2 act as a solvent. This is achieved by injecting the CO2 at supercritical conditions.
Unless I am mistaken, the solvent action should be more efffective than lowering the viscosity with temperature.
If you react your CO2, what are you going to use as a solvent to fluidize the oil?

<<A good friend will bail you out of jail, but a true friend
will be sitting beside you saying ” Damn that was fun!” - Unknown>>

 

[dcasto]

since CO2 is already one of the lowest energy molecules, sorry. Do you realize that when CO2 contacts oil, there is a heat increase from the heat of solution? But, the background rock absorbs it with little if any net temperature increase.

 

[ivymike]

I thought that typically when a gas dissolved in a liquid, the temperature of the liquid went down... do I have that backwards, or is CO2 a special case?