[Opm] Problem with WELDIMS
Stephen, Karl D
K.D.Stephen at hw.ac.uk
Tue Feb 4 09:05:28 UTC 2020
Has the usage of WELDIMS changed in the recent version of flow?
I have a simple quarter 5 spot model where injector, "INJ", is placed on one corner and producer "PROD" on the other of a square model (5 x 5 x 3 cells).
PROD is added to group G1 and INJ is added to group G2 in WELLSPECS. Both wells are completed vertically over the three layers.
I would expect WELLDIMS to be set up as:
-- Maximum well/connection/group values
-- #wells #cons/w #grps #wells/grp
-- ------ ------- ----- ----------
2 3 2 1 /
When WELLSPECS and COMPDAT are:
-- Location of wellhead and pressure gauge
-- Well Well Location BHP Pref.
-- name group I J datum phase
-- ----- ---- - - ----- -----
PROD G1 1 1 8000 OIL /
INJ G2 5 5 8000 WATER /
-- Completion interval
-- Well Location Interval Status Well
-- name I J K1 K2 O or S ID
-- ---- - - -- -- ------ ------
PROD 1 1 1 3 OPEN 2* 0.667 /
INJ 5 5 1 3 OPEN 2* 0.667 /
This is what worked in the previous version of flow that I ran (18.10) and in ECLIPSE. I still have 18.10 installed on a virtual machine.
Now I get the error message:
Error: Run uses maximum group size of 2, but allocates at most 1 in RUNSPEC section. Increase item 4 of WELLDIMS accordingly.
Failed to create valid EclipseState object.
Exception caught: RUNSPEC_GROUPSIZE_TOO_LARGE: Run uses maximum group size of 2, but allocates at most 1 in RUNSPEC section. Increase item 4 of WELLDIMS accordingly.
All is fine if I set the fourth item of WELDIMS to 2 for the number of groups but it should be possible to set it to 1 as there is one well per group.
Is this a bug? The latest manual for 19.10 states that the 4th item is the "maximum number of wells that can belong to a group".
It seems as if MXGRPS and MXGRPW are being confused?
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