Time delay step in Eclipse

[Tejaswy]

ACTIONW
ACTION1 'P2' WWCT > 0.6 10000 /


WCONINJE
-- WELL INJ OPEN/ CNTL SURF RESV BHP
-- NAME TYPE SHUT MODE RATE RATE
'P2' 'WAT' 'OPEN' 'RATE' 8000 /
/

WPOLYMER
'P2' 0.875 /
/
ENDACTIO



ACTIONW
ACT2 'P2' WWCT > 0.6 10000/

WCONPROD
'P1' 'OPEN' 'BHP' 5* 1000.0 /
--'P3' 'OPEN' 'BHP' 5* 1000.0 /
--'P1' 'OPEN' 'GRAT' 2* 15000.0 /
/
ENDACTIO

I need a little help with the action keywords. I, in particular am having a little trouble here.

This is what I need, I have a injection well, It is supposed to pump in water for 30 days and then inject polymer for next 30 days.
Its just one cycle but I would love to know how to control this cycle too.



I am not able to get the code right for it it seems. Can you guys help me.?

[Shakespear]

Many way to do this.

Here is one example

------------------------------------------------------------------------
-->The fifth SPE comparison problem , reported by Killough and Kossack
-- ( 9th SPE Symp on Res. Sim., San Antonio, 1987).
-- Dimension 7x7x3-
-- 6 components
-- FIELD units
-- The run follows the first of the three suggested production schedules
-- Solvent injection as part of a WAG cycle
------------------------------------------------------------------------

RUNSPEC ================================================== ============

FIELD

OIL
WATER
GAS

COMPS
6 /

TABDIMS
1 1 40 40 /

DIMENS
7 7 3 /

EQLDIMS
1 20 /

WELLDIMS
2 2 /

START
1 Jan 1990 /

GRID ================================================== ==============

INIT

DXV
7*500 /

DYV
7*500 /

DZV
20 30 50 /

TOPS
49*8325 49*8345 49*8375 /

PORO
147*0.3 /

PERMX
49*500 49*50 49*200 /

PERMY
49*500 49*50 49*200 /

PERMZ
49*50 49*50 49*25 /

PROPS ================================================== ==========

EOS
PR /

PRCORR

RTEMP
160 /

STCOND
60 14.7 /

CNAMES
C1
C3
C6
C10
C15
C20
/

TCRIT
343.0
665.7
913.4
1111.8
1270.0
1380.0
/

PCRIT
667.8
616.3
436.9
304.0
200.0
162.0
/

ZCRIT
0.290
0.277
0.264
0.257
0.245
0.235
/

MW
16.04
44.10
86.18
149.29
206.00
282.00
/

ACF
0.013
0.1524
0.3007
0.4885
0.6500
0.8500
/

BIC
0.0
0.0 0.0
0.0 0.0 0.0
0.05 0.005 0.0 0.0
0.05 0.005 0.0 0.0 0.0 /

STONE

SWFN
0.2 0 45.0
0.2899 0.0022 19.03
0.3778 0.0180 10.07
0.4667 0.0607 4.90
0.5556 0.1438 1.8
0.6444 0.2809 0.5
0.7000 0.4089 0.05
0.7333 0.4855 0.01
0.8222 0.7709 0.0
0.9111 1.0000 0.0
1.00 1.0000 0.0 /

SGFN
0.00 0.000 0.0
0.05 0.000 0.0
0.0889 0.001 0.0
0.1778 0.010 0.0
0.2667 0.030 0.001
0.3556 0.05 0.001
0.4444 0.10 0.03
0.5333 0.20 0.8
0.6222 0.35 3.0
0.65 0.39 4.0
0.7111 0.56 8.0
0.80 1.0 30.0
/

SOF3
0.00 0.0 0.0
0.0889 0.0 0.0
0.1500 0.0 0.0
0.1778 0.0 0.0110
0.2667 0.0 0.0370
0.3 0.0 0.0560
0.3556 0.0123 0.0878
0.4444 0.0835 0.1715
0.5333 0.2178 0.2963
0.6222 0.4153 0.4705
0.7111 0.6769 0.7023
0.80 1.0 1.0 /

ROCKTAB
1000.0 1.0 1.0
2000.0 1.005 1.0
3000.0 1.010 1.0
4000.0 1.015 1.0
5000.0 1.020 1.0
6000.0 1.025 1.0
7000.0 1.030 1.0
8000.0 1.035 1.0
9000.0 1.040 1.0
10000.0 1.045 1.0 /

WATERTAB
1000.0 1.0099 0.70
4000.0 1.0000 0.70
9000.0 0.9835 0.70 /

--Specify initial liquid composition

ZMFVD
1000.0 0.5 0.03 0.07 0.2 0.15 0.05
10000.0 0.5 0.03 0.07 0.2 0.15 0.05 /

--Surface densities : only the water value is used

DENSITY
1* 62.4 1* /

SOLUTION ================================================== ===========

--Request initial state solution output

RPTSOL
PRESSURE SOIL SWAT SGAS PSAT /

EQUIL
8400 4000 9000 0 7000 0 1 1 0 /

SUMMARY ================================================== ===========

--Request field GOR, water cut oil rate and total, gas rate

FGOR
FWCT
FOPR
FOPT
FWPR

RUNSUM

SCHEDULE ================================================== ========

AIMCON
6* -1 /

--Request FIP reports, group, sep and well data, and solution maps.

SAVEEND

RPTPRINT
0 1 0 1 1 1 0 1 0 0 /

--Specify solution maps of pressure and saturations

RPTSCHED
PRESSURE SOIL SWAT SGAS /

--One stage separator conditions

SEPCOND
Sep Field 1 60 14.7 /
/

--Define injection and production wells

--2000a WELLSPEC is used for back-compatibility, prefered keyword is WELSPECS
--WELLSPEC
--P Field 7 7 8400 Sep /
WELSPECS
P Field 7 7 8400 OIL /
/

--2000a uses WELSEPC to associate separator with wells
WSEPCOND
P SEP /
/

--2000a WELLCOMP is for back-compatibility, prefered keyword is COMPDAT
--WELLCOMP
--P 7 7 3 3 1 0.5 /
COMPDAT
P 7 7 3 3 1* 1 1* 0.5 /
/

--Well P on oil rate of 12000 stb/day, with min bhp of 1000 psi

--2000a WELLPROD is for back-compatibility, prefered keyword is WCONPROD
--WELLPROD
--P oil 12000 3* 1000 /
WCONPROD
P OPEN ORAT 12000 4* 1000 /
/

--Limits on water cut and GOR
--Note limit is on water cut, rather than water-oil ratio

GRUPLIM
Field 2* 0.8333 10 1* A Y /
/

TSTEP
2*365 /

--Define injection well

WELLSTRE
Solvent 0.77 0.20 0.03 0.0 0.0 /
/

--2000a WELLSPEC is used for back-compatibility, prefered keyword is WELSPECS
--WELLSPEC
--I Field 1 1 8335 /
WELSPECS
I Field 1 1 8335 GAS /
/

--2000a WELLCOMP is for back-compatibility, prefered keyword is COMPDAT
--WELLCOMP
--I 1 1 1 1 1 0.5 /
COMPDAT
I 1 1 1 1 OPEN 1 1* 0.5 /
/

--Start WAG cycles-----------------------------------------------------

--2000a WELLINJE is for back-compatibility, prefered keyword is WCONINJE
--WELLINJE
--I Stream Solvent Gas 1* 12000 12000 /
WCONINJE
I GAS OPEN RATE 12000 /
/
WINJGAS
I Stream Solvent /
/
WELTARG
I WRATE 12000 /
/

WELLWAG
I T W 365.25 G 365.25 /
/

TSTEP
20*365.25 /

END

[vinomarky]

As Shakespear has posted above, that method will work. In case you were struggling to make sense of it, the WELLWAG keyword is the 'special sauce' that would make your life easier - look it up in the Eclipse Reference Manual.

In the unlikely event that you wish to do a E100 run with this sort of alternating process, another workaround is simply specify two identical wells for each injector - one as a water injector, other as a gas injector and then alternate production/shutin between them with 30.4 day timesteps.

[Tejaswy]

In the unlikely event that you wish to do a E100 run with this sort of alternating process, another workaround is simply specify two identical wells for each injector - one as a water injector, other as a gas injector and then alternate production/shutin between them with 30.4 day timesteps.

Yes, My apologies I should have mentioned before that i wanted to do it in E100 not E300, Sorry Shakespeare.
I am at the moment making the changes as suggested by vinomarky.

[vinomarky]

In answer to Tejaswy's private message;

"Hi,
You will remember me from the reservoir engineering forum
I have a question that i must ask you.
You you please tell me how to shot off a well after 30 days \

for example



ACTIONW
ACTION1 'P2' WWCT > 0.6 10000 /


WCONINJE
-- WELL INJ OPEN/ CNTL SURF RESV BHP
-- NAME TYPE SHUT MODE RATE RATE
'P2' 'WAT' 'OPEN' 'RATE' 8000 /
/

WPOLYMER
'P2' 0.875 /
/
ENDACTIO


Can you modify this so that it automatically shuts down after 30 days.
In the unlikely event that you wish to do a E100 run with this sort of alternating process, another workaround is simply specify two identical wells for each injector - one as a water injector, other as a gas injector and then alternate production/shutin between them with 30.4 day timesteps.
I was following your advice and I put another well adjacent to the well. I was looking for a way to control the shut in and openings of both the wells.
You can alternatively point me towards a resource too

Thanks
Tejaswy"

-------------------------------------------
Looks like you are trying to trigger an automatic recompletion from producer to alternating polymer/water flood once 60% watercut is reached. I'd replace the bits inside your ACTION statement with something like the following (assuming you have already defined PINJ and WINJ wells in WELSPECS and COMPDAT)

-- Define PINJ well's polymer loading
WPOLYMER
PINJ 0.875 /
/

-- One month of water injection at 8000 bwpd
WCONINJE
WINJ WATER OPEN RATE 8000 /
PINJ WATER OPEN RATE 0.00001 / -- Leaving small but finite injection rate to ensure we still get continuous BHP pressure trace
/

TSTEP
1*30.4
/

-- One month of polymer injection at 8000 bwpd
WCONINJE
WINJ WATER OPEN RATE 0.00001 /
PINJ WATER OPEN RATE 8000 /
/

TSTEP
1*30.4
/

Repeat as necessary the WCONINJE and TSTEP statements

[vinomarky]

Edit: Just remembered that you cannot use timestepping keywords inside the ACTION statement

While having to explicitly define timestep stages of water/polymer this causes us a problem - and on first glance can't think of a solution. Can you do without the ACTION statement? You may have to run the simulation to find when the watercut is reaching 60%, then edit deck to incorporate polymer flood after this... a pain, and especially awkward if you are doing many different runs, but possibly only solution given ACTION restrictions

Anyone else have an idea?

[Tejaswy]

Yup that was exactly the troublw i was having, timesteps in action keywords.
I am thinking of barrels of polymer to be injected.

I inject 5000 bbls of polymer per day * 30 days = 15000 bbls
then i stop
Then Inject 10000 bbls of water per day *30 days = 450000bbls

But then that will not work either. Eclipse will inject the whole thing in one go rather than 30 days.

[vinomarky]

Think I may have come up with a solution, again using ACTION statements, but keying off the month. It would go something like this;

ACTIONW
ACTION1 'P2' WWCT > 0.6 10000 /

WLIST
'*INJ' NEW 'P2' /
/

WCONINJE
-- WELL INJ OPEN/ CNTL SURF RESV BHP
-- NAME TYPE SHUT MODE RATE RATE
'P2' 'WAT' 'OPEN' 'RATE' 8000 /
/
ENDACTIO

ACTIONX
POLY 10000 /
MNTH '=' JAN OR /
MNTH '=' MAR OR /
MNTH '=' MAY OR /
MNTH '=' JUL OR /
MNTH '=' SEP OR /
MNTH '=' NOV /
/
WPOLYMER
'*INJ' 0.875 /
/
ENDACTIO

ACTIONX
NOPOLY 10000 /
MNTH '=' FEB OR /
MNTH '=' APR OR /
MNTH '=' JUN OR /
MNTH '=' AUG OR /
MNTH '=' OCT OR /
MNTH '=' DEC /
/
WPOLYMER
'*INJ' 0.0 /
/
ENDACTIO


ACTION1 checks if P2 production has watercut > 60%, if so, creates a new well list '*INJ' in which well P2 is the only member. It then starts water injection.

ACTION POLY checks if in an odd numbered month, and if so sets polymer loading to 0.875 in wells in well list *INJ

ACTION NOPOLY checks if even numbered month, and if so sets polymer loading to 0.0 in wells in well list *INJ

I think this should work - the only wrinkle is that you may get the first injection period of water instead of your original code which had polymer initially, depending on when injection commences.

It may complain about setting polymer loadings in an empty well list *INJ before first action is triggered, in which case just set up a dummy well with 0.0001 injection rate as the only initial member of *INJ well list, then ADD P2 to the well list (instead of NEW)

VM

[vinomarky]

Revisiting an old thread - just came across a far easier keyword obviously better suited to this task - WCYCLE

[Tejaswy]

==deleted==

[Tejaswy]

Thanks for this, i was facing the same problem again...

[vinomarky]

Have you tried using the WELOPEN command? You'd essentially have to manually specify each year to alternate opening and closing your injector/producer wells

WELOPEN
I1 SHUT/
P1 OPEN/
/