3DSL 2017.0627

Enhancements

1. The CUTOFF optional keyword is allowed on the PERMX, PERMY, PERMZ keywords when reading these keywords as arrays.
2. Aquifer locations read from a .INIT file are no longer overwritten if the BOUNDARIES Section is present.  The aquifer locations will only be overwritten if a NAME= keyword appears in the BOUNDARIES Section.
3. Read NNCHEAD from either the .INIT or .EGRID/.GRID files.  And issue an error if the TRANNNC keyword is missing but NNCHEAD has been defined.
4. Remove the ‘BACKFLOW’ warning when reading velocity fields from ECL/IX simulators to export streamlines.
5. For PatMB calculations, remove the echo of material balance errors over a timestep and instead only echo the total material balance error at the end of each timestep.  Also echo the number of bundles as, “PatMB:N=” at the end of each timestep.

Bug Fixes

1. For SURVEILLANCE=ON, the pattern material balance solver would create a gas saturation on the grid if a well’s historical GOR dropped below RSAVG.  Now wells are assumed to produce at least at RSAVG regardless of their historical GOR for this solver.
2. Catch float overflow when TOFDEL keyword is present in the OUTPUT section and delta time-of-flights are greater than 1E38 days.  This can happen for gridblocks will tiny permeabilities.
3. Fixed a bug when computing the timestep size along a streamline for systems with gravity.