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TUTORIAL IPM 9 P-05
Selecting and matching a multiphase flow correlation for an oil well model
OBJECTIVES
DATA
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- Demonstrate the procedure to calibrate a multiphase flow correlation for an oil well model- Use the calibrated model to obtain production rate
Create an oil well model in PROSPER, match the well model with measure data available. Using the calibrated model estimate the water cut at which the naturally flowing well can no longer flow.
This tutorial starts from Tutorial IPM 9 P-04, or use the attached PROSPER file.
PB: (Bubble point)
PVT DATA (Tutorial 04 explains this section)
Variable Value Units
Solution GOR
Oil density
Gas specific gravity
Water Salinity
430
34
0.73
85000
Scf/stb
API
ppm
PVT LAB DATA
Temperature°F
163
163
163
Pressurepsig
2571
2235 *PB
1522
GORScf/Stb
430
430
281
BoRb/stb
1.204
1.209
1.139
μoilCp
0.87
0.84
---
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IPR DATA
DOWN-HOLE EQUIPMENT DATA
“U” (Overall heat transfer coefficient): 8 BTU/h/ft2/F
Variable Value Units
Reservoir pressure
Reservoir temperature
Water cut
PI (Productivity index)
2405
163
15
4.8
psig
F
%
Stb/day/psi
Measure depthm
Deviation survey Geothermal gradient
True vertical depthm
Temperature°F
0
452
489
665
2885
2902
0
443.4
475.7
601.2
1706.4
1713
80
163
Description
Down-hole equipment
Depthm
IDinch
Xmas tree
Tubing
Restriction
Tubing
Restriction
Tubing
Casing
0
1000
1000
2700
2700
2850
2902
2.992
2.75
2.992
2.441
2.992
6.366
WELL TEST DATA
WELL MATCHING CALIBRATION RESULTS
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The field is under water flooding operation, it is planned to maintain the reservoir actual reservoir pressure, and it is expected and increased water cut production in the near future for this well. Using the calibrated well model and the test well head pressure determine at which water cut the well will not be able to flow naturally.
Variable Value Units
Selected multiphase correlation
Matching Parameter 1
Matching Parameter 2
Flowing bottom hole pressure
Calibrated Productivity indexpsig
stb/d/psi
Date
01/10/09 395 110
WHPPsig
WHT°F
15
Water cut%
2100
Liquid ratestb/day
2700
Gauge depthm
1796
Gauge pressure psig
2405
Reservoir pressurepsig
250
GORscf/stb
Variable Value Units
Water cut %