The ECLIPSE_FILE sub-block of OUTPUT requests that the simulation outputs Eclipse format files. See example below:
OUTPUT MASS_BALANCE_FILE PERIODIC TIMESTEP 1 END ECLIPSE_FILE PERIOD_SUM TIMESTEP 5 d TIMES d 30 500 1000 WRITE_DENSITY WRITE_VISCOSITY WRITE_RELPERM WRITE_CAPPRES OUTFILE WCT SUMMARY_D [...] END_SUMMARY_D END LINEREPT END
The default is to output unformatted unified Eclipse files that are compatible with post-processors such as ResInsight, an open-source post-processor which may be downloaded from the ResInsight website. Five Eclipse files are produced – a grid file (.GRID), an init file (.INIT), a specification file (.SMSPEC), a summary file (.UNSMRY) and a restart file (.UNRST). The restart files are only used as an industry standard output format by PFLOTRAN – they cannot be used to restart an Eclipse run.
The summary files contain a set of standard mnemonics from which line graphs may be obtained, such as FGIP and WGIR. For the full list of available variables and their names refer to Line Graph Mnemonic.
The init and restart files contain grid and solution properties such as permeabilities and fluid saturations.
Note that for ResInsight to load data correctly, the input name must be in capital letter (e.g. CASE.IN) so that output files will also be in capital letter (CASE.GRID, CASE.UNRST, CASE.SMSPEC, CASE.UNSMRY, CASE.INIT)
Below are all the keywords supported within ECLIPSE_FILE:
PERIOD_SUM controls the frequency of the summary file (line graph data) output. This may be done by timestep, or by time period.
This keyword requests output of Eclipse restart and summary data at a series of specified times. For example:
TIMES y 1 2 5 10
requests output at 1, 2, 5 and 10 years.
PERIOD_RST controls the frequency of the restart file (pressure and saturations for 3D visualisation) output. This may be done by TIMESTEP, or by TIME period.
MULTIPLE requests ouput of multiple Eclipse restart files (with suffices like X0001) rather than a single unified file with a .UNRST suffix.
The default is to output unformatted unified Eclipse files, although the FORMATTED sub-keyword may be used to request formatted files. Example:
OUTPUT MASS_BALANCE_FILE PERIODIC TIMESTEP 1 END ECLIPSE_FILE PERIOD_SUM TIMESTEP 1 d PERIOD_RST TIME 200 d FORMATTED END LINEREPT END
Requests output of tables of fluid in place, well and completion data, and timing data, to the .out file. This will be produced at times at which Eclipse restart files are produced.
May take an optional argument to specify additional output:
Any combination of the characters W, C, or T may be used. Each letter specifies the following:
W: output of well data to the out file
C: output of completion data to the out file
T: output of timing data to the out file
specifying output of completion and well data to the out file respectively. WC indicates both. FLIP and MATBAL are output in all cases.
The outfile produced will take the following form:
This requests that cell values be written to the .UNSMRY file, so they can be plotted against time later.
SUMMARY_Z are identical except that for
SUMMARY_D the k index is downwards, and for
SUMMARY_Z it is upwards.
An example usage is:
OUTPUT [...] ECLIPSE_FILE [...] SUMMARY_D BPR 10 10 3 BOSAT 10 10 3 BGSAT 10 10 3 BWSAT 10 10 3 BSSAT 10 10 3 BDENO 10 10 3 BDENG 10 10 3 BDENW 10 10 3 BDENS 10 10 3 BVOIL 10 10 3 BVGAS 10 10 3 BVWAT 10 10 3 BVSLV 10 10 3 BGPC 10 10 3 BWPC 10 10 3 BTEMP 10 10 3 BPBUB 10 10 3 END_SUMMARY_D END LINEREPT END
This requests the values of several values, all at cell 10,10,3, be written to the summary file.
The variables available are:
BPR, the cell pressure.
BSSLV, for oil, gas, water or solvent saturation respectively.
BDSLV, for oil, gas, water or solvent density respectively.
BVSLV, for oil, gas, water or solvent viscocity respectively.
Phase relative permeabilities:
BKRS, for oil, gas, water or solvent relative permeability respectively.
BWPC, for gas and water capillary pressures respectively.
BYMFG, water in aqueous, gas in aqueous, water in vapour, and gas in vapour respectively.
The output from
SUMMARY_Z can be found in the Eclipse summary files, and also in the mass file. For example, the following:
SUMMARY_D BPR 1 1 100 END_SUMMARY_D
adds a summary
BPRESSUR summary to block
1 1 100 in the .UNSMRY file, and the following column to the mass file:
BPressure [bar] 1_1_100