1053 Tubing Performance1
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Transcript of 1053 Tubing Performance1
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Outflow 18/04/02 Outflow.p
How do we get hydrocarbons to
What is tubing performanc
How do we size tubing?
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Outflow 18/04/02 Outflow.p
At the end of this session you should be ab
Explain what tubing performance is
Describe the key features of tubing perfo
Carry out a tubing size selection exercise
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Outflow 18/04/02 Outflow.p
Just as we optimise the Inflow performanthe reservoir to the wellbore, we also neeOutflow performance from the bottom of
Tubing performance is the term used to d
performance. It is also called Vertical Lift
Tubing Performance looks at optimising/pressure losses at lowest life cycle cost.pressure drop, we maximise production.
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Outflow 18/04/02 Outflow.p
In order to flow from the bottom of the wneed to overcome several pressure drop
Hydrostatic head
Frictional losses
Acceleration effects
(normally negligible)
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Outflow 18/04/02 Outflow.p
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Bubble flow - dispersed bubble of gas inphase;
Slug flow - coalescing bubble in larger oacross the entire pipe x-section. Between
are slugs of liquid with entrained smaller
Churn flow - highly turbulent flow patternboth gas- and liquid phase
Annular flow (mist flow) - gas is continuodispersed liquid droplets; liquid moves aboundary layer to the pipe;
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INCREASE of PWFdue to fluid hold-up INCREASE of PWF
due increasing friction
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Flowing tubing pressure
Length of tubing
Friction factors
Tubing diameter
Fluid composition (liquid/gas)
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Outflow 18/04/02 Outflow.p
Flowin
gbottomholep
ressurePWF
Flow rate (Q)
THP1 > THP2
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Flowin
gbottomholepressurePWF
Flow rate (Q)
2
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Flowin
gbottomholep
ressurePWF
PWF
Flow rate (Q)
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IPR - Inflow Performance Relationship
IPC - Intake Pressure Curve
TPC - Tubing Performance Curve
CPC - Choke Performance Curve
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To isolate the well from downstream pres
Control of downhole pressure
QPfwh PFLD2 P fwh
Critical flow:
Single -phase gas flow : PFTH
Multi-phase gas-liquid flow : PFTH
D1
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Outflow 18/04/02 Outflow.p
Tubing performance is the term used to dperformance.
Tubing performance dependent on:
Flowing tubing pressure
Length of tubing
Friction factors
Tubing diameter
Fluid composition (liquid/gas)
Definition of terms
Use of Choke
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In your syndicate groups, please do the fo
Explain what tubing performance is
What are IPC, TPC & CPC
Describe the key parameters which tubinwhat are they & how do they affect tubin
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1 99 9 S he ll I nt er na ti on al E xp lo ra ti on & P ro du ct io n B V O ut fl ow2 .p pt , p ag e 1P180
Pressure Losses in Oil Production.
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1999 Shell Intern ational Exploratio n & Production BV Outflo w2.ppt, pa ge 2P180
The Function of a Completion
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1 99 9 S he ll I nt er na ti on al E xp lo ra ti on & P ro du ct io n B V O ut fl ow2 .p pt , p ag e 3P180
Dual Completion
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1 99 9 S he ll I nt er na ti on al E xp lo ra ti on & P ro du ct io n B V O ut fl ow2 .p pt , p ag e 4P180
Representation of Flowing Well