Separator PVT problems are found on 9 PVT 8. Understand:
1) Flash & Differential liberation in regard to reservoir bubble point (BP).
2) Formation Volume Factor (FVF) & Shrinkage Factor (SF).
3) Gas/Oil Ratio (GOR).
A common question: from known OOIP what will you get at your separator?
If the reservoir is >BP, you need Flash data only (if <BP, you will need both flash & differential).
For the typical example, say your Relative Volume was 0.99 and flash Bo was 1.5. These are typical numbers (rounded for simplicity, of course). Bo would calculate to 0.99(1.5) = 1.49 res bbl/STB.
If separator shrinkage is given at say 0.9 STB/sep bbl, it's easy to find res bbl/sep bbl:
1.49 res bbl/STB (0.9 STB/sep bbl) = 1.33 res bbl/sep bbl
Last, if given OOIP (say 2, 2.25, or 2.5 MM res bbl) you can get sep BBL (say 1.5, 1.7, or 1.9 MM).
Separator problems intimidate but they are almost always all bark and no bite.
No comments:
Post a Comment