PetraSim 5 Beta

[Charlie Thornton]

We have posted an beta version of the upcoming PetraSim 5. Some important updates include:

• Z divisions are now controlled by layers, making it easier to work with stratigraphy.
  
• Polygonal (Voronoi) meshes are now supported.
  
• Polygonal boundaries and boundary editing is now supported.
  
• Many major changes "under the hood" which make PetraSim faster and more reliable.
  
• Time history plots of accumulated well quantities are now available.
  

A more complete list of new features and bug fixes is available in the release notes:

http://www.thunderheadeng.com/petrasim/relnotes.html

You can download a free trial from the PetraSim page:

http://www.thunderheadeng.com/petrasim/index.html

(Link is in the box at upper-right corner.)

[nav20205]

I am not used to with PetraSim but interested to work with it. However, I want to know the followings with regards to new PetraSim 5 Beta version;

i) Is it possible to generate mesh for heterogeneous /layered media (porous layers with intervals of non porous media in between). If yes, then about how many alternate structures we can mesh in the new version.

ii) Can we mesh fault zones(continuous and scattered faults).

ii) Can we work with CO2 bubble or channel flow along the faults or in the porous media.

[Charlie Thornton]

Nawaz,

Sure. Porosity in PetraSim is set using the material system. If you wanted to build up alternating layers of porous and less-porous media, the only limit would be the number of material types (ROCK records) you could create. In the original TOUGH2 simulator binaries this limit was set at 27, but in the version shipped with PetraSim we've increased the limit to 100. That's only a problem if each material needs to be unique. If you just want to use two material types, you can make as many layers as you want.

The internal boundary system is useful when working with faults. This approach splits up the model and makes it a bit easier to assign different properties to different areas. I think the MINC (multiple interacting continua) system is designed to handle certain types of faults as well, but I am not very familiar with that method. You may have better luck asking one of the others how to approach a particular kind of fault in PetraSim.

I am not familiar with the specifics of "CO2 bubble" or "channel flow". The best I can do is refer you to the manual for ECO2N which is the TOUGH2 module designed to model CO2 flow through porous media.

http://esd.lbl.gov/tough+/software-tough2-mp.html (look for ECO2N User's Guide)

In your PM you asked about price as well, that has not yet been finalized. You would need to talk to Alison for details.

- Charlie

[nav20205]

Hi,

I am Petrasim 5 user. wherefrom I can get fine named "geochem_basis.sim" Regards,