tustp 2003
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TUSTP 2003. Evaluation of Oil-Water Flow through Piping Restrictions. by Erzhan Kuantaev. May 20, 2003. Outline. Introduction Objectives Experimental Results Conclusion Future Work. Introduction. - PowerPoint PPT PresentationTRANSCRIPT
TUSTP 2003TUSTP 2003
byErzhan KuantaevErzhan Kuantaev
byErzhan KuantaevErzhan Kuantaev
May 20, 2003May 20, 2003
Evaluation of Oil-Water Flow through
Piping Restrictions
Evaluation of Oil-Water Flow through
Piping Restrictions
Outline Outline
Introduction
Objectives
Experimental Results
Conclusion
Future Work
IntroductionIntroduction
• Flow conditioning upstream of compact separators can improve their performance and separation efficiency
• Study of water-oil mixture flow through different piping restrictions can help reduce droplet breakup and promote coalescence
ObjectivesObjectives
Compare oil-water separation in Batch Separator for different restrictions
Improve design of restrictions for more efficient oil-water separation
Experimental Program Experimental Program
Experimental Facility
Experimental Results
By pass valve
Batch Separators
Flow Restrictions
Floor Level
5’
1.5’
2’
15’ - 20’
Inlet Outlet
Experimental FacilityExperimental Facility
Restrictions GeometryRestrictions Geometry
Vs.
Vs.
Batch Separator Batch Separator
Batch Separator Batch Separator
Experimental ResultsExperimental Results
Text matrix:Text matrix:
- Orifices – square and circular - Orifices – square and circular
- Rectangular venturi and channel- Rectangular venturi and channel
- Water cut (25%, 50%, 75%) - Water cut (25%, 50%, 75%)
- Mixture velocities (1 - 5 ft/s)- Mixture velocities (1 - 5 ft/s)
Orifice ResultsOrifice Results Vm=1.5 ft/s, WC=50%
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
0 200 400 600 800 1000
Time (sec.)
WH
, O
H (
cm
)
WH (Circular)
OH (Circular)
WH (Square)
OH (Square)
Orifice ResultsOrifice Results
0
200
400
600
800
1000
1200
1400
10.0 20.0 30.0 40.0 50.0
Orifice Mixture Velocity (ft/s)
95%
Sep
arat
ion
Tim
e (s
ec.)
WC=25% (Circular) WC=50% (Circular) WC=75% (Circular)WC=25% (Square) WC=50% (Square) WC=75% (Square)
Orifice ResultsOrifice Results
100200300400500600700800900
1000110012001300
0.00 2.00 4.00 6.00 8.00
DP, psid
95
% S
ep
ara
tio
n T
ime
, se
c
WC=75% (Square) WC=50% (Square) WC=75% (circular)WC=50% (circular) WC=25% (Square) WC=25% (circular)
Orifice ResultsOrifice Results Pressrue Drop Comparison
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0
Orifice Mixture Velocity, ft/s
Pre
ssu
re d
rop
, p
sid
WC=75% (Square) WC=50% (Square)
WC=25% (Square) WC=75% (Circular)
WC=50% (Circular) WC=25% (Circular)
Venturi Results Venturi Results
Vm=2.5 ft/s, WC=75%
28.00
30.00
32.00
34.00
36.00
38.00
40.00
42.00
44.00
0 50 100 150 200 250 300 350 400 450 500
Time (sec.)
WH
, O
H (
cm)
"OH - Rectangular"
"WH - Rectangular"
"OH - Venturi"
"WH - Venturi"
Final separation time
Venturi ResultsVenturi Results
0200400600800
10001200
0.0 10.0 20.0 30.0 40.0 50.0Nozzle Mixture Velocity, ft/s
95%
Sep
arat
ion
tim
e, s
ec
WC=25% (Venturi) WC=25%(Rectangular) WC=50% (Venturi) WC=75% (Venturi)WC=50% (Rectangular) WC=75% (Rectangular)
Venturi ResultsVenturi Results
00.5
11.5
22.5
33.5
44.5
0.0 10.0 20.0 30.0 40.0 50.0
Nozzle Mixture Velocity (ft/s)
DP
(p
sid
)
WC=25% (Venturi) WC=50% (Venturi)WC=75% (Venturi) WC=25%(Rectangular)WC=50%(Rectangular) WC=75%(Rectangular)
ConclusionsConclusions
Orifice Orifice
- Separation time - Separation time less for flow through circular less for flow through circular geometry as compared to rectangular geometrygeometry as compared to rectangular geometry
- Pressure drop almost the same for both geometries- Pressure drop almost the same for both geometries
ConclusionsConclusions
VenturiVenturi
- Separation time less for venturi geometry as - Separation time less for venturi geometry as compared to rectangular channelcompared to rectangular channel
- Venturi exhibits less pressure drop than - Venturi exhibits less pressure drop than rectangular channelrectangular channel
Future WorkFuture Work
More data needs to be acquired for higher pressure More data needs to be acquired for higher pressure dropdrop
More studies needed to understand effect of different More studies needed to understand effect of different restriction geometries on droplet breakup/coalescencerestriction geometries on droplet breakup/coalescence
Improve instrumentations (Laser/Fiber Optic)Improve instrumentations (Laser/Fiber Optic)
Develop model for prediction of droplet size Develop model for prediction of droplet size distribution through piping restrictionsdistribution through piping restrictions