WELLTEST_DPDS

Script to extract simulated welltest results. Typically used to compare with welltest analysis, from eg Kappa Saphir.

Required summary vectors in sim deck:

  • wbhp:well_name

  • wopr:well_name if phase == OIL

  • wgpr:well_name if phase == GAS (do not yet use pseudo-pressure)

  • wwpr:well_name if phase == WATER

Outputs files according to naming convention under outputdirectory/:

  • dpdspt_lag1_suffix.csv; cumtime and superpositioned time derivative of pressure lag1

  • dpdspt_lag2_suffix.csv; cumtime and superpositioned time derivative of pressure lag2

  • spt_suffix.csv; superpositioned time

  • welltest_output_suffix.csv; file with vectors: cumtime, wbhp, wopr, wgpr, wwpr

  • dpdspt_lag1_genobs_suffix_bunr.csv; if –genobs_resultfile is invoked

  • dpdspt_lag2_genobs_suffix_bunr.csv; if –genobs_resultfile is invoked

  • wbhp_genobs_suffix_bunr.csv; if –genobs_resultfile is invoked

suffix is specified by argument outfilesuffix bunr is specified by argument buildup_nr genobs_resultfile expects a file with welltest results used to define the time steps to be reported (typically exported from Saphir with time and pressure derivative). genobs_resultfile is to generate files used with GENERAL_OBSERVATION/GEN_DATA in ERT. note: the outfilesuffix argument is then used to pass on the RESTART/report step number. (in example below outfilesuffix=wellname_reportstep).

Note

GAS phase results do not include yet pseudo-time and pseudo-pressure.

usage: welltest_dpds [-h] [--outfilessuffix OUTFILESSUFFIX] [-n BUILDUP_NR]
                     [-o OUTPUTDIRECTORY] [--phase {OIL,GAS,WATER}]
                     [--genobs_resultfile GENOBS_RESULTFILE] [--version]
                     eclcase wellname

Positional Arguments

eclcase

Eclipse case to extract from

wellname

Name of well to extract results from

Named Arguments

--outfilessuffix

Suffix to be added to result files.

Default: “”

-n, --buildup_nr

Buildup nr, eg which buildup to extract. Counting from 1.

Default: 1

-o, --outputdirectory

Directory to put the output files.

Default: “.”

--phase

Possible choices: OIL, GAS, WATER

Main fluid phase in test (OIL/GAS/WATER).

Default: “OIL”

--genobs_resultfile

Option to trigger export of result files compatible with ERTGENERAL_OBSERVATION file format to be used in history matching. Expected argument is a file with welltest results used to definethe time steps to be reported (file typically exported from Saphir.)

--version

show program’s version number and exit