1. Reservoir Rock and Fluid Properties
PETE 517
PETE 216
Reservoir Rock and Fluid Properties
Fall
Dr. Mahmut Parlaktuna
CONVENTIONAL PVT MEASUREMENTS
PETE 216
HYDROCARBON PHASE BEHAVIOR

2. STANDARD PVT TESTS Compositional Analysis (CA)
PETE 517
STANDARD PVT TESTS
Compositional Analysis (CA)
Multistage Separation (MSS)
Constant Composition Expansion (CCE) (Flash vaporization test)
Differential Liberation Expansion (DLE) (Differential vaporization test)
Constant Volume Depletion (CVD)
PETE 216
HYDROCARBON PHASE BEHAVIOR

3. PETE 517
PETE 216
HYDROCARBON PHASE BEHAVIOR

4. PETE 517
OIL PVT ANALYSES
Bottomhole wellstream compositional analysis through C7+,
CCE
DLE
MSS
PETE 216
HYDROCARBON PHASE BEHAVIOR

5. COMPOSITIONAL ANALYSIS
PETE 517
COMPOSITIONAL ANALYSIS
GAS CHROMATOGRAPHY (GC)
LIQUID CHROMATOGRAPHY (LC)
PETE 216
HYDROCARBON PHASE BEHAVIOR

6. PETE 517
PETE 216
HYDROCARBON PHASE BEHAVIOR

7. Constant Composition Expansion
PETE 517
Constant Composition Expansion
PETE 216
HYDROCARBON PHASE BEHAVIOR

8. Constant Composition Expansion
PETE 517
Constant Composition Expansion
PETE 216
HYDROCARBON PHASE BEHAVIOR

9. Constant Composition Expansion
PETE 517
Constant Composition Expansion
Pressure (psig)
Relative Volume
Y Function
Density (g/cm3)
5000
0.9639
0.6808
4500
0.9702
0.6763
4100
0.9756
0.6726
4000
0.9770
0.6716
3500
0.9845
0.6665
3000
0.9928
0.6609
2900
0.9946
0.6597
2800
0.9964
0.6585
2700
0.9984
0.6572
2620
1.0000
0.6562
2605
1.0021
2591
1.0042
2516
1.0157
2401
1.0353
2253
1.0648
2.497
2090
1.1041
2.418
1897
1.1627
2.325
1698
1.2415
2.229
1477
1.3611
2.122
1292
1.5000
2.033
1040
1.7839
1.911
830
2.1709
1.810
640
2.7603
1.718
472
3.6961
1.637
PETE 216
HYDROCARBON PHASE BEHAVIOR

10. Constant Composition Expansion
PETE 517
Constant Composition Expansion
PETE 216
HYDROCARBON PHASE BEHAVIOR

11. Constant Composition Expansion
PETE 517
Constant Composition Expansion
Above bubblepoint
PETE 216
HYDROCARBON PHASE BEHAVIOR

12. Constant Composition Expansion
PETE 517
Constant Composition Expansion
PETE 216
HYDROCARBON PHASE BEHAVIOR

13. Differential Liberation Expansion
PETE 517
Differential Liberation Expansion
PETE 216
HYDROCARBON PHASE BEHAVIOR

14. Differential Liberation Expansion
PETE 517
Differential Liberation Expansion
Pressure
(psig)
Rsd
(SCF/bbl)1
(vol/vol)1
Bod2
Btd3
Oil density
(g/cm3) Z
Bg4
Incremental gas gravity
2620
854
152
1.600
0.6562
2350
763
136
1.554
1.665
0.6655
0.846
0.825
2100
683
122
1.515
1.748
0.6731
0.851
0.818
1850
612
109
1.479
1.859
0.6808
0.859
0.797
1600
544 97
1.445
2.016
0.6889
0.872
0.791
1350
479 85
1.412
2.244
0.6969
0.887
0.794
1100
416 74
1.382
2.593
0.7044
0.903
0.809
850
354 63
1.351
3.169
0.7121
0.922
0.831
600
292 52
1.320
4.254
0.7198
0.941
0.881
350
223 40
1.283
6.975
0.7291
0.965
0.988
159
157 28
1.244
14.693
0.7382
0.984
1.213
1.075
0.7892
2.039
Gravity of residual oil = °F
1 Volume of gas at the standard conditions per volume of residual oil.
2 Volume of oil at indicated pressure and temperature per volume of oil at the standard conditions.
3 Volume of oil plus liberated gas at indicated pressure and temperature per volume of residual oil at the standard conditions.
4 Volume of gas at indicated pressure and temperature per volume at the standard conditions.
PETE 216
HYDROCARBON PHASE BEHAVIOR

15. Multistage Separation Test
PETE 517
Multistage Separation Test
PETE 216
HYDROCARBON PHASE BEHAVIOR

16. Multistage Separation Test
PETE 517
Multistage Separation Test
Separator Pressure (psig)
Gas oil ratio (SCF/bbl)1
Gas oil ratio (SCF/STB)2
Stock-tank oil gravity (°API at 60 °F)
Formation Volume factor (vol/vol)3
Separator volume factor
(vol/vol)4
Specific gravity of flashed gas
50 to 0
715
737
1.031
0.840 41
40.5
1.481
1.007
1.338
100 to 0
637
676
1.062
0.786 91 92
40.7
1.474
1.363
200 to 0
542
602
1.112
0.732
177
178
40.4
1.483
1.329
300 to 0
478
549
1.148
0.704
245
246
40.1
1.495
1.286
1 GOR per barrel of oil at indicated pressure and temperature.
2 GOR per barrel of stock-tank oil at 60 °F.
3 FVF per barrel of stock-tank oil at 60 °F.
4 Separator oil volume factor per barrel of stock-tank oil at 60 °F.
PETE 216
HYDROCARBON PHASE BEHAVIOR

17. Multistage Separation Test
PETE 517
Multistage Separation Test
PETE 216
HYDROCARBON PHASE BEHAVIOR

18. GAS CONDENSATE PVT ANALYSES
PETE 517
GAS CONDENSATE PVT ANALYSES
Recombined Wellstream Compositional Analysis (CA)
Constant Composition Expansion (CCE) (Flash vaporization test)
Constant Volume Depletion (CVD)
PETE 216
HYDROCARBON PHASE BEHAVIOR

19. Constant Composition Expansion
PETE 517
Constant Composition Expansion
Pressure (psig)
Relative volume (V/Vsat)3 Z4
Volume of Retrograde liquid (%)5
7975
0.9395
1.2866
0.00
7540
0.9599
1.2429
7250
0.9765
1.2158
71831
0.9787
1.2074
7105
0.9826
1.1991
6960
0.9935
1.1876
68222
1.0000
1.1718
6743
1.0068
1.1660
0.30
6598
1.0174
1.1530
0.82
6380
1.0312
1.1302
1.73
6090
1.0550
1.1039
2.92
5655
1.0971
1.0661
4.79
5075
1.1687
1.0120
7.18
4495
1.2632
0.9764
9.40
3915
1.3959
0.9401
11.02
3335
1.5841
0.9094
12.40
2610
1.9773
0.8894
13.15
1 Initial reservoir pressure
2 Saturation pressure at reservoir temperature
3 Vsat = volume of fluid at saturation pressure and reservoir temperature
4 Z=PV/nRT (n total number of moles)
5 (Volume of retrograde liquid at indicated pressure / total volume at saturation pressure)*100
PETE 216
HYDROCARBON PHASE BEHAVIOR

20. Constant Composition Expansion
PETE 517
Constant Composition Expansion
PETE 216
HYDROCARBON PHASE BEHAVIOR

21. Constant Volume Depletion
PETE 517
Constant Volume Depletion
PETE 216
HYDROCARBON PHASE BEHAVIOR

22. Constant Volume Depletion
PETE 517
Constant Volume Depletion
Pressure (psig)
Cumulated production (%)
Specific gravity of produced gas Z
Volume of Retrograde liquid (%)
7975
0.00
0.943
1.2866
7540
1.2429
7250
1.2158
7183
1.2074
7105
0.40
1.1991
6960
1.51
1.1876
6822
2.17
1.1718
5800
9.67
0.889
1.0767
4.31
4930
17.66
0.845
1.0056
7.53
3915
29.89
0.797
0.9479
10.18
3045
42.90
0.760
0.9176
11.28
2030
60.29
0.737
0.9171
11.32
1160
76.17
0.728
0.9476
10.49
PETE 216
HYDROCARBON PHASE BEHAVIOR

23. Constant Volume Depletion
PETE 517
Constant Volume Depletion
PETE 216
HYDROCARBON PHASE BEHAVIOR

24. Constant Volume Depletion
PETE 517
Constant Volume Depletion
PETE 216
HYDROCARBON PHASE BEHAVIOR

25. Constant Volume Depletion
PETE 517
Constant Volume Depletion
PETE 216
HYDROCARBON PHASE BEHAVIOR