Eclipse step by step

[temr]

Mr. temr, do u have any suggestion to solve history matching faster?

There is no solution to do this.
The only thing is that you need to be shure on you input data like
1. Well log data
2. Well test data
3. Scal data
4. Production data
5. Pressure data

[acang_024]

--Warning
Bottom hole pressure limit not set for well SB-D22
Will use default value of 1469.590 Psia

i set GRAT and THP on WCONPROD, i use e300. i got warning like above.

what should i do, i wanna make GRAT constant at 2500 mmscf/day, the simulator automatically set BHP at 1469.590 psi (i thought this is a default number), it make decrease GRAT.

[temr]

For simulator to back calculate bhp from thp you need to provide to him VFPi table
try this
WCONPROD
Well OPEN GRAT 2* 2500 1* 1* 145 10* /

[acang_024]

Mr. term i got trouble when i run e300.

the message

" Zero determinant problem in LAINV(n)"

after that run stop suddenly.

what should i do sir.

[acang_024]

dear Mr. term

i would like to ask a question. i got 2 number FIP on initialization (E300) the 1st is GAS wrt separator (mscf) and the 2nd is Gas Res Vol (rb) which one i have to use on initialization step?

and then, when i forecast my reservoir model(gas reservoir). after 20 years, the cumulative gas production is bigger than number on FIP (Gas wrt separator), so the recovery factor is more than 100 %, very very impossible, what wrong with my models

thanks a lot

[temr]

Sorry i am not expert in 300 look in manual

[vinomarky]

Not possible to produce more than is in place.. Eclipse does these sorts of checks quite well

Some thoughts - are you comparing FGPT to GIIP in reservoir conditions or standard conditions?

Are you gas injecting?

I'm sure there's a reasonable answer.

[acang_024]

Yes, i'm comparing FGPT and GIIP base on FIP calculation on initialization (GAS wrt (separator) both fip and GIIP on MSCF. there's no gas injection well. i'm confuse how to calculate recovery factor of this filed after 20 years forecast.

thanks a lot Mr.

[vinomarky]

1. Add FGIP to your SUMMARY section
2. Run
3. Plot and answer your own question... Very much doubt that it will increase with time.. If it does you have something funky going on like gas injection that you are not aware of

[acang_024]

Thanks Sir, i'll try your suggestion

[acang_024]

FGIP decrease by time goes on, but if i plot together with FGPT, FGIP initial < FGPT (end of forecast), and I'm sure that no injection gas well.

[vinomarky]

If the input files are not too big, upload them somewhere, send me a pm with the location and I'll take a look at it