电潜泵系统构成及工作原理
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13
Centrifugal ????
14
Centrilift Submersible Pump
Stages stacked on a shaft and compressed in a housing.
15
Cutaway of Pump Stationary diffusers Rotating (right to left) impellers
21
Impeller
Fluid enters the impeller through the ‘eye’ near the shaft and exits the impeller on the outside.
22
Impeller - Cut Away
23
Diffuser
24
Diffuser
A typical ESP installation
ESP System Technology Overview
2
Objective
• Upon comletion of this course, you should be able to:
Explain the uses for Electrical Submersible Pumps. List the major components of an ESP system. Explain the principle of an ESP system.
9
If Upper Tandem (UT) then a discharge is built into the pump.
Built in Discharge head
UT Pump
10
UT or MT pump
Middle Tandem pump Base
Shipping Cap
11
The Bolt on Head The Middle Tandem or Lower Tandem Pump Head
18
Impeller Terminology
Upthrust Washer Top Shroud
Impeller Hub
Impeller Vane
Downthrust Washer
Impeller Eye
Bottom Shroud Impeller Skirt
19
Impeller
Hub
Upper Shroud
4
5
Built in Discharge head
Stationary Diffuser Rotating Impeller Pump Shaft
The Pump
Tubing screws in here
Pump Housing Built in Intake
Bolts to the Seal
6
12
UT or MT pump bolts on here.
Gas separator intake (cut away). May be bolted on to the base of a MT (Middle Tandem) or UT (Uppets on here.
3
ESP Downhole System
The basic ESP downhole system components are ...
nThe Pump ▪The Seal Section nThe Motor nThe Power Cable nThe Monitoring System (optional)
The seal bolts on here
8
If MT (middle tandem) or LT (Lower Tandem) then a flange face is the head of the pump.
Shipping Cap
Head
LT/MT = Lower/Middle Tandem pump
16
Impeller
17
Pump Stage Hydraulic Design
ESP Stage designs fall into one of two hydraulic design categories …
Radial Flow - flow path is generally perpendicular (radial) with respect to the pump shaft Mixed Flow - flow path has both axial and radial direction with respect to the pump shaft
The diffuser does not rotate, it turns the fluid up into the next impeller
onto or is threaded into the pump housing • Normally be set above the perforation for
sufficient cooling.
7
LT = Lower Tandem pump ( with built in intake )
The Pump
• Hangs from the production tubing • Lifts the fluid through the tubing to the surface • Is a multi-stage centrifugal type • Is constructed from impellers and diffusers • Must be sized to match the well production • Has an intake and discharge that either bolts
Vanes
Lower Shroud
Skirt
Eye
20
Impeller
The impeller rotates about the pump axis, with the shaft
It provides the centrifugal force to the fluid - gives it energy.
Centrifugal ????
14
Centrilift Submersible Pump
Stages stacked on a shaft and compressed in a housing.
15
Cutaway of Pump Stationary diffusers Rotating (right to left) impellers
21
Impeller
Fluid enters the impeller through the ‘eye’ near the shaft and exits the impeller on the outside.
22
Impeller - Cut Away
23
Diffuser
24
Diffuser
A typical ESP installation
ESP System Technology Overview
2
Objective
• Upon comletion of this course, you should be able to:
Explain the uses for Electrical Submersible Pumps. List the major components of an ESP system. Explain the principle of an ESP system.
9
If Upper Tandem (UT) then a discharge is built into the pump.
Built in Discharge head
UT Pump
10
UT or MT pump
Middle Tandem pump Base
Shipping Cap
11
The Bolt on Head The Middle Tandem or Lower Tandem Pump Head
18
Impeller Terminology
Upthrust Washer Top Shroud
Impeller Hub
Impeller Vane
Downthrust Washer
Impeller Eye
Bottom Shroud Impeller Skirt
19
Impeller
Hub
Upper Shroud
4
5
Built in Discharge head
Stationary Diffuser Rotating Impeller Pump Shaft
The Pump
Tubing screws in here
Pump Housing Built in Intake
Bolts to the Seal
6
12
UT or MT pump bolts on here.
Gas separator intake (cut away). May be bolted on to the base of a MT (Middle Tandem) or UT (Uppets on here.
3
ESP Downhole System
The basic ESP downhole system components are ...
nThe Pump ▪The Seal Section nThe Motor nThe Power Cable nThe Monitoring System (optional)
The seal bolts on here
8
If MT (middle tandem) or LT (Lower Tandem) then a flange face is the head of the pump.
Shipping Cap
Head
LT/MT = Lower/Middle Tandem pump
16
Impeller
17
Pump Stage Hydraulic Design
ESP Stage designs fall into one of two hydraulic design categories …
Radial Flow - flow path is generally perpendicular (radial) with respect to the pump shaft Mixed Flow - flow path has both axial and radial direction with respect to the pump shaft
The diffuser does not rotate, it turns the fluid up into the next impeller
onto or is threaded into the pump housing • Normally be set above the perforation for
sufficient cooling.
7
LT = Lower Tandem pump ( with built in intake )
The Pump
• Hangs from the production tubing • Lifts the fluid through the tubing to the surface • Is a multi-stage centrifugal type • Is constructed from impellers and diffusers • Must be sized to match the well production • Has an intake and discharge that either bolts
Vanes
Lower Shroud
Skirt
Eye
20
Impeller
The impeller rotates about the pump axis, with the shaft
It provides the centrifugal force to the fluid - gives it energy.