Weatherford 2011 sucker rod pump catalog
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© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Operation - Concept
Standing Valve opens at the
start of upstroke to admit
fluids into the compression
chamber from the reservoir,
and closes on downstroke
of pump to prevent these
fluids from returning to the
formation.
(C)
Visualization of Rod Pump Working
(A) (B) (C)
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Types of Insert Pumps
z Rod Pump - Top Anchor
z Rod Pump - Bottom Anchor
z Rod Pump - Travel Barrel Bottom Anchor
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Barrel Application
Top Anchor
Bottom
Hold-Down
Pump
Top
Hold-Down
Pump
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Top Anchor
Valve Rod
Plunger
Barrel
Ball Stop
Standing
Valve
Seat
Traveling
Valve
Valve Rod
Plunger
Barrel
Ball Stop
Standing
Valve
Seat
Traveling
Valve
Pump
Pump
Movement
Movement
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Top Anchor
z Good for sandy wells
z Pump Barrel acts as Gas Anchor
z Excellent for low fluid wells
Advantages
Disadvantages
z Valve rod is weak leak of sucker rod
z Not recommend for deep wells
z Barrel Tube subject to sedimentation on
part-time pumping
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Barrel Application
Bottom Anchor
Bottom
Hold-Down
Pump
Top
Hold-Down
Pump
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Bottom Anchor
Valve Rod
Plunger
Barrel
Ball Stop
Standing
Valve
Seat
Traveling
Valve
Valve Rod
Plunger
Barrel
Ball Stop
Standing
Valve
Seat
Traveling
Valve
Pump
Pump
Movement
Movement
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Bottom Anchor
z Run in deep wells
z Good valve location
z Better design where long pumps necessary
Advantages
z V-rod weak link in S-rod chain
z Barrel Tube subject to sedimentation
z Barrel Tube subject to corrosion
Disadvantages
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Traveling Barrel
Bottom Anchor
© Weatherford. All rights reserved.
ARTIFICIAL LIFT SYSTEMS
®
Rod Pump
Traveling Barrel
Valve Rod
Plunger
Barrel
Ball Stop
Standing Valve
Seat
Traveling
Valve
Valve Rod
Plunger
Barrel
Ball Stop
Standing Valve
Seat
Traveling
Valve
Pump
Pump
Movement
Movement