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Simulation-Benchmarks / 11thSPE-CSP

11th Society of Petroleum Engineers Comparative Solution Project
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CO2 solubility behavior at high pressures #28

Open GiacomoRivolta opened 7 months ago

GiacomoRivolta commented 7 months ago

Hi, I'm looking a bit into the script make_solubility_table.py and I tried to compare the results obtained from the script with experimental results available in literature and reported in Spycher, Pruess and Ennis-King, 2003. For example, the behavior for CO2 solubility at 50°C seems to differ with what report in the paper, expecially in the region above 400 bar (see figures below: first one from Spycher et al. 2003 and second one from me 😃).

image image

As you can see the red triangles in the second figures tend to differ from the experimental results (blue dots) and show a decreasing trend in the high pressure region; this behavior it's not expected and it's not reproducing Spycher-Pruess-Ennis-King results. (Even if the pressure range is extended in my plot you can clearly see that the trend is not matching the paper results).

I tried looking in the code but I couldn't find nothing wrong, also comparing the equations with what is reported in the paper.

Could you take a look into it and give me some feedback (maybe it's something trivial)?

Thank you in advance for your time and effort, ciao 👋!

berndflemisch commented 3 months ago

I hope that this is resolved by now, see also https://connect.spe.org/discussion/calculation-of-co2-solubility. Sorry for reacting so late.

berndflemisch commented 3 months ago

It would be great if you could double-check and eventually close the issue.