NAME

       cpchop_depthtrend - Upscale simple statistics

SYNOPSIS

       cpchop_depthtrend gridfilename=cornerpointgrid.grdecl [option=value]

DESCRIPTION

       This  program is a variant of cpchop. Instead of subsampling randomly, it picks subsamples downwards in a
       model. It is specifically designed for extracting laterally extensive subsamples in  specified  intervals
       downwards through a model, in order to analyze depth trends in porosity in particular.

       Example usage:

       cpchop_depthtrend gridfilename=cornerpointgrid.grdecl subsamples=100 ilen=5 jlen=5 zlen=5

OPTIONS

       zresolution Vertical distance between subsamples. Defaults to 1.
       subsamples Number of subsamples. Defaults to 1.
       filebase If supplied, grdecl-files for each subsample will be written to files named using this filebase,
       it may include directory names.
       resultfile Name of a textfile to output table of results per subsample to.
       ilen  Length  in  i-direction  of  subsample,  specified  in number of cells. Defaults to all cells in i-
       direction.
       jlen Length in j-direction of subsample, specified in number of  cells.  Defaults  to  all  cells  in  j-
       direction.
       zlen Length in z-direction of subsample, specified in the grids length unit (typically cm or m). Defaults
       to full height.
       imin Can be used to limit the search area for random subsamples. Defaults to minimum i in inputgrid (full
       model).
       imax Can be used to limit the search area for random subsamples. Defaults to maximum i in inputgrid (full
       model).
       jmin Analog to imin, but in j-direction. Defaults to minimum j in inputgrid (full model).
       jmax Analog to imax, but in j-direction. Defaults to maximum j in inputgrid (full model).
       zmin  Analog  to  imin, but in z-direction and specified in the grids length unit. Defaults to minimum in
       inputgrid.
       zmax Analog to imax, but in z-direction and specified in the grids length unit. Defaults  to  maximum  in
       inputgrid.
       upscale  Boolean for whether to do upscaling on the subsamples, either true or false. If the objective is
       to obtain a grdecl-file for the subsample, set to false for run time. Defaults to true.
       bc Boundary condition type for upscaling, either fixed or periodic. Defaults to fixed.
       resettoorigin If true, outputted grdecl-file will have its ZCORN-values and COORDS-values shifted so that
       the model is defined at the origin. If false, the outputted grdecl-file will be located in  its  original
       position. Defaults to true.

REPORTING BUGS

       Report on github repository <https://github.com/OPM/opm-upscaling/issues>

SEE ALSO

       cpchop

cpchop_depthtrend 2020.04                          April 2021                               CPCHOP_DEPTHTREND(1)