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Alfredo Battistelli
Alfredo_b
Reservoir Engineer
Italy
www.linkedin.com/in/alfredo-battistelli-765a1554
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Joined
Sat Aug 17 16:35:58 UTC 2019
119
posts
19
likes received
8
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Latest Posts
Re: Problem of wellbore coupling with reservoir in T2WELL
The wellbore node in a wellbore-reservoir connection shall be located at the wellbore - reservoir interface. Then, the flow along the connection is simply computed using Darcy's law from the wellbore…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
4 wk ago
TOUGH2
Reported - view
Re: T2Well-ECO2N
@Muhammad I do not have a specific experience in modeling CO2 leakages along wellbores. There is an extensive literature on the subject that can be searched to identify the best approach to be…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 mth ago
TOUGH2
Reported - view
Re: Flow out of the base of a hillslope
@Jordon Massey I tried to implement the main features of your conceptual model into the numerical one, but you should of course use your own model specifications (petrophysical properties,…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 mth ago
1
TOUGH2
Reported - view
Re: T2Well-ECO2N
@liu qi You should use T2Well when a coupled modeling of wellbore and reservoir flow is necessary. This might be the case when you are interested in transients occurring because of changes in…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 mth ago
TOUGH2
Reported - view
Re: Flow out of the base of a hillslope
@Jordon Massey Thanks for the clear conceptual model sketch. I have to update PetraSim from V. 2022.3.1003 to the latest 2023 version. So I rebuilt the model using EOS3.…
Attachment
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 mth ago
TOUGH2
Reported - view
Re: Flow out of the base of a hillslope
Jordon, May be I missed something about the conceptual model on which your numerical model is based. A graphical sketch of the conceptual model would likely clarify what you intend to model.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 mth ago
TOUGH2
Reported - view
Re: Flow out of the base of a hillslope
Increasing the volume of a boundary elements by 50 times is not enough if you want constant boundary conditions. You should use something in the order of 1.E+30 or more.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 mth ago
TOUGH2
Reported - view
Re: How can the relationships between permeability (k/k0) and porosity (Φ/Φ0 ) in the fault be changed?
@xusheng chen As you posted under TOUGH2 I assume you are using TOUGH2-ECO2N. k vs phi model is assigned using IE(11) and model parameters are given with FE(1) and FE(2),…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 mths ago
TOUGH2
Reported - view
Re: How to set up semi-analytical method to calculate heat transfer in t2well?
@happy12688 Wellbore heat transfer can be computed either numerically or analytically (Ramey's equation) in T2Well. Looking at T2Well-ECO2N (2011) user's guide:…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 mths ago
TOUGH2
Reported - view
Re: How can the relationships between permeability (k/k0) and porosity (Φ/Φ0 ) in the fault be changed?
In TOUGH2-ECO2N, as in EWASG, parameters for k/ko vs phi/phio are given under block SELEC and are used for all the rock domains specified under block ROCKS. The same seems to be done in TOUGH3.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 mths ago
TOUGH2
Reported - view
Re: How many VOCs can be included in a TMVOC simulation?
The number of components in TMVOC is NK=1+NHC+NCG, where NHC is the number of VOC, NCG the number of gases (inorganic or organic with low Tcrit), and 1 is for water.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 mths ago
TMVOC
Reported - view
Re: ECO2N / ECO2M: handling of wettability in a dry zone
@Prince Kumar Having XCO2 going to 1 it's OK, as you are injecting CO2 (with a tiny amount of water, which is a good practice to avoid just one component in any of the grid blocks).…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 mths ago
TOUGH2
Reported - view
Re: ECO2N / ECO2M: handling of wettability in a dry zone
@Prince Kumar Not sure I have understood which is the issue you have. Having a complete dry-out of the formation around the injection well? With SW going to zero? SS goin to 1 ?…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 mths ago
TOUGH2
Reported - view
Re: Help deciding EOS7C or EOS7CA
@Jordon Massey I think EOS7C should give rather accurate thermodynamic equilibria and thermophysical properties of gas and aqueous phases at near surface conditions too.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
5 mths ago
1
TOUGH2
Reported - view
Re: Help deciding EOS7C or EOS7CA
Jordon, Have you considered to use TMVOC under Petrasim? It can handle mixtures of CH4 and air with a thermodynamic description suitable for low pressure conditions. Alfredo
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
5 mths ago
TOUGH2
Reported - view
Re: Printout problem with TIMES
OK. This seems to be a different question, but I'm not sure to have understood what you would like to have. I think TIMES lets you specify at which simulation times the code shall make a printout.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
5 mths ago
TOUGH2
Reported - view
Re: Printout problem with TIMES
I think TOUGH2 is doing what it should do. FOFT controls the printout of a fixed number of parameters at each time step for the listed elements. TIMES controls the printout of main output tables.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
5 mths ago
TOUGH2
Reported - view
Re: Modelling of high temperature (600 ℃) air injection.
Dear Xin, you posted in the TOUGH2 section, so I assume you are using TOUGH2. No standard TOUGH2 module can go above 350°C, which is the limit of liquid water properties of Region 1 in the IAPWS P-T…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
6 mths ago
1
TOUGH2
Reported - view
Re: CO2 storage in saline aquifer with ECO2N
I would start looking at mass balance equations for the generic component in ECO2N user's guide. All needed parameters should be printed in the main output table,…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
1
TOUGH2
Reported - view
Re: CO2 storage in saline aquifer with ECO2N
I guess you could compute for each grid element belonging to the rock domains affected by CO2 migration: mass of dissolved CO2: MCO2w = V phi (1. - SG) DL XCO2aq CO2 mass in the gas (NA) phase:…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
1
TOUGH2
Reported - view
Re: About the SEED with porosity
Hi Luoluo. SEED allows to use permeability modifiers only. A similar option is not available for porosity. But you should be able to assign element by element porosity values (PORX) just using the…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH2
Reported - view
Re: TOUGHREACT1.2/ECO2N: About the inject rate and maximum pressure
@Luoluo Not sure what you mean for: but it failure to exhibit a gravity plume. The plot shows the upflow of CO2 under gravity driven flow and its accumulation below the cap-rock.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH2
Reported - view
Re: TOUGHREACT1.2/ECO2N: About the inject rate and maximum pressure
You are using a 2D vertical slice just 1 m wide. Injecting 5 kg/s CO2 in a vertical slice is not comparable to inject the same rate in a radial system. I think you should either use a radial grid or…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH2
Reported - view
Re: How many materials can be included in TMVOC?
SEED keyword should allow to assign the permeability modifiers (PM) that are affecting the permeability assigned to rock domains and are also used to scale the capillary pressure.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TMVOC
Reported - view
Re: TOUGHREACT1.2/ECO2N: About the inject rate and maximum pressure
Your output file does not show any problem for the 30 days simulated. The P builds up to 596.33 bara, as you mention, for a relatively limited injection rate of 5 kg/s.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH2
Reported - view
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