Bug Fixes

1. The cumulative reservoir produced/injected volumes for boundaries when SURVEILLANCE=ON were not being output correctly.

This is a major new release of 3DSL. Due to the below enhancements, results will not be identical to the previous release version.
Enhancements

Bug fixes

1. For cases where 2 open wells share a connection in the same blk and this warning is issued ‘! WARNING. OPEN WELLS AAA & BBB SHARE BLK IJK= 1 2 3’, sometimes both connections were shut in.

Bug Fixes

1. When forecasting and SURVEILLANCE=ON,
   1. If a producer was shut at the final timestep, a valid forecast correlation model was not computed.  Well could not be properly reopened.
   2. For incompressible PVT, forecast correlation might fail unnecessarily if a producer’s history contained negative pressures.  Now include historical data associated with negative pressures.

Bug Fixes

1. Boundary efflux rates were not properly computed when SURVEILLANCE=ON and in forecast mode.
2. If negative saturations are computed in well pair bundles for SURVEILLANCE=ON and the MODEL=FCM or LIVEOIL and these bundles are connected to effluxing open boundaries, the negative saturations are now reset to zero.  Only positive saturations can efflux from open boundaries.
3. Bug fix to read/write of .rst files for SURVEILLANCE=ON runs.

Enhancements

Bug Fixes

1. 3DSL sometimes crashed if a later timestep contained no open wells, opened boundaries, and incompressible PVT, where the pressure solution had no pressure gradients.
2. HISTGAS rates for a well were not echoed for timesteps where the well had no HISTOIL or HISTWAT defined and HISTFREEGAS=OFF.
3. ‘NAMES’ vector was not written to the .SMSPEC file if all wells names were 8-char or less but well group names were more than 8-chars.

Enhancements

Bug Fixes

1. Resrvoir phase pore volumes assigned to boundaries were not being output correctly.
2. The number of gridblock connections written to the .wcc file for boundaries was limited to 99999. Now extended to 9999999.

Enhancements

Bug Fixes

1. For SURVEILLANCE=ON, the %PV value written to the .wpv file sometimes contained ‘****’ rather than a number.  This then caused a restart SURVEILLANCE=ON run, based on the faulty .wpv file, to fail.
2. Wells on LASTSIMBHP at the first timestep of a restarted run would shut-in rather than remain open and reset to LASTVOI rate control, if their final rate control in the base run resulted in backflow.  This bug was introduced in the v2020.0821 version.

Enhancements

Bug Fixes

1. For CHEMICALS the cumulative mass of each chemical injected or produced at each well was incorrectly calculated as 2x the actual value.

Enhancements

1. RSAVG keyword now allowed for compressible MODEL=IMMISCIBLE runs.
2. DRYGASPVT keyword is now required for all compressible MODEL=IMMISCIBLE runs.