Nourah

Hi Jia, Thank you so much for your help and replies. I will work on them now and try applying your recommendation. I do intend to supress minerals only. thank you for this notice. Many thanks, Nourah

Hi Jia, Thank you for your reply. I am trying to model CO2-Rock-water interaction. I have the basis as the water analysis data and the kinetics are the mineralogy input with their surface area and rate constant. and I reacted 3.5 mol of CO2 and the set the time for 0.2 yr. Then I picked up the fluid to simulate the CO2 for 30yr with the same basis and mineralogy. however, I want the CO2 to be stable in the 30 yrs. so I swapped the H+ to CO2 partial pressure and set to 1100 psi in the basis and fixed the CO2 in the reactant pane to make it stable. I am also interested to see the effect on mineral dissolution and precipitation. I have attached my input files. and I hope what I explain makes sense of what I am trying to model. The CO2-N1 is the initial successful reaction. The N1 pickup is the one with the error. Many thanks for your help in advance. Nourah CO2-N1-supressed-0.2 yr.rea N1-pickup.rea

Hello, I am having trouble with my model. For start, the reaction model was successful when I reacted CO2 partial pressure with the water analysis data and minerals for one month, then I picked up the fluid and saved them, when I opened the picked-up script, I only swapped the pH to the CO2 partial pressure and increased the time to 30 yrs. I Keep getting the same error message: Newton-Raphson didn't converge after 999 iterations, max residual = 0.000991, Xi = 0.0000 Largest residual(s). I tried playing with parameters (CL, HCO3), I have also tried changing the charge balance to Na., But it does not work. please can you help me figure this out and solve it.

Hello, I am trying to use react to model the reaction of CO2 with water and rock. I was able to demonstrate the affect of CO2 partial pressure with pH by sliding the CO2 fugacity . however I am more interested into the reaction model of co2-water-rock. Could you please help me or direct me , my knowledge in the software is very limited. Best wishes, Nourah