CANNOT FIND PARAMETERS AT ELEMENT

[salar]

Hi,

I have recently started to work with Tough2/ECO2N/ Toughreact. I have provided all the required input file, but I have a problem or it is better to say an error when I run the program. My problem is a 2D box (12 by 1 by 10 cells respectively in x,y and z) in which I inject co2 in one side and there is no flow condition for other boundaries which is set by default as far as I know.

In the following, I copied a piece of the error message while running.

Hope you can help me out.

******************************************************************************************************************************

A1112( 1, 3) ST = 0.100000E+00 DT = 0.100000E+00 DX1= 0.259617E+08 DX2= -.242995E-12 T = 75.000 P = 45961747. S = 0.000000E+00

+++++++++ CANNOT FIND PARAMETERS AT ELEMENT *A11 1* XX(M) = -.599845E+37 0.828385E+24 -.269839E+27 0.750000E+02

+++++++++ REDUCE TIME STEP AT ( 2, 2) ++++++++++++++++ NEW DELT = 0.500000E-01

A1110( 2, 3) ST = 0.150000E+00 DT = 0.500000E-01 DX1= 0.124369E+08 DX2= 0.711560E-13 T = 75.000 P = 58398632. S = 0.000000E+00

+++++++++ CANNOT FIND PARAMETERS AT ELEMENT *A11 1* XX(M) = -.268354E+37 0.779476E+24 -.224665E+27 0.750000E+02

+++++++++ REDUCE TIME STEP AT ( 3, 2) ++++++++++++++++ NEW DELT = 0.250000E-01

+++++++++ CANNOT FIND PARAMETERS AT ELEMENT *A11 1* XX(M) = -.553557E+36 0.702851E+24 -.157165E+27 0.750000E+02

[rldouma]

I am having almost the same exact error - I am injecting CO2 into a grid of 1x1x1 cubes covered on top by a layer of rock that has low permeability and I get those same error messages "EOS Cannot Find Parameters at Element ____" and the program reduces the time step to almost nothing. I have found the only way to get mine to work is the drop the injection rate below 10^-8 kg/s. I'm not sure how to resolve this issue - I've tried a variety of different enthalpies using methods described here and my own calculations. Any help would be appreciated.

[Alison]

You may need to add pore compressibility to your model (or pore expansivity). If you are using PetraSim and would like to send me your SIM file, I would be happy to take a look (Alison @rockware.com).

Thanks,

Alison