General information on SCORES input requirements
Please fill-in any relevant name like: John; or John Doe. Only alphanumeric characters are accepted.
For a password, please apply to Jos Maas .
In case your password is not accepted, check carefully the spelling and usage of UPPER and lower case. After three (wrong) trials, the system
expects you to go and hunt for your passwords and not come back within 20 mins or so: please supply your correct password only after 20 mins.
All input will be ignored within that period, sorry.
Please fill-in a description of your measurements like: ABC-123; or North Sea Well 10s. We recommend to append an additional (unique) sequence number to the project name in order for you to keep track of the results when varying the relperms or cappressures in an interactive procedure. Only alphanumeric characters are accepted.
Please specify your complete E-mail address and check this very carefully. If your E-mail address turns out to be invalid,
the SCORES data will disappear in the wide data prairies!
The results of the simulations will be sent back to you in spreadsheet format. The spreadsheet will include all input data you submitted, including the user name and project name.
The mail "Subject" will show the project name you filled in.
It is our experience that 50 grid blocks provide sufficient detail in most cases. For additional information, on how the number of grid blocks may influence the simulation results, we refer you to standard text books on reservoir simulation.
Core orientation can be set to either Vertical or Horizontal. In designing your experiments, it can be very helpful to review the influence of gravity on your measurements by changing the orientation.
In (Un)Steady State experiments, injection is in the simulations always at the bottom of the plug.
(Un)Steady-State experiments
Please specify the distance between the pressure taps on your core plug. SCORES will present you with a table of pressure drop versus time.
If your taps are not at the inflow and outflow faces of the plug, but closer to each other, the calculated pressure drop will be too large,
when compared to the actual experimental data.
Centrifuge experiments
Please specify the actual length of the core plug. SCORES will present you with a table of saturations, as a function of time, at the "top" and "bottom" of the
plug. Irrespective of the drainage or imbibition mode, "top" refers to the inflow-end and "bottom" refers to the outflow-end (the side of the plug closest to the collection tube).
The initial water saturation has to be consistent both with the data in the relative permeability tables and with the data in the Pc or Leverett-J table.
i) From the relative permeability data, SCORES will derive Scw and Sor. Swi has to be within the range spanned by Scw and 1-Sor.
ii) Subsequently, through linear interpolation, SCORES estimates Pc (or Pc derived from Leverett-J) at Swi. At the start of an experiment, when the plug is mounted into the equipment, the plug usually will be at ambient pressure and at (capillary) pressure equilibrium. Therefore, Pc at Swi should be not too large. SCORES requires you to have Pc(Swi) between +1bar and -1bar.
Fluid data need to specified at the experimental conditions of temperature and pressure.
The defaults presented will provide good results in most cases. For additional information on how these control data may influence your results, we refer you to standard text books on reservoir simulation.
At the times t, specified in the time tables, also a saturation profile across the core plug will be generated. If you are interested in saturation profiles at intermediate times, just specify the time of your preference, with an fw (for USS experiments) or flow rate (for SS experiments) identical to the one you specified at a previous time level.
The radius to the centre of the core plug is used to calculate the centrifugal acceleration g at the centre of the core. The simulator will account for different g's at different points in the core. Please note that, usually, the radius to the centre of the core plug for a "drainage" bucket is different from the value with an "imbibition" bucket.
The centrifuge start-up time and limit indicate the time required for the centrifuge to reach the "limit" RPM from standstill. Please check with the manufacturer of your centrifuge what values to use: the delay in reaching a "set" RPM can significantly impact on your measurements, particularly in high-permeability plugs.
SCORES will present you with a table of saturations as a function of time, at the "top" and "bottom" of the plug. Irrespective of the drainage or imbibition mode, "top" refers to the inflow-end and "bottom" refers to the outflow-end (the side of the plug, closest to the collection tube).
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