®
System & Equipment Overview
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
®
Reciprocating Rod Lift
Sucker Rod
System Applications
Tubing Anchor/
Catcher Virtually all applications, including
sandy, gaseous, and high viscosity
Sucker Rod
Wide range of fluid levels from near
Pump surface to seating nipple depth
Assembly
Low to medium volume lift capabilities
All types of wells, including horizontal,
slant, directional and vertical reservoir
Industry standard for On land and
remote applications
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
Rod Lift System
Application Considerations
®
Typical Range Maximum*
Operating
Depth 100 - 11,000’ TVD 16,000’ TVD
Operating
Volume 5 - 1500 BPD 5000 BPD
Operating
Temperature 100° - 350° F 550° F
Sucker Rod
Wellbore 0 - 20° Landed 0 - 90° Landed
Tubing Anchor/
Deviation Pump Pump -
Catcher
<15°/100’
Build Angle
Sucker Rod Corrosion Handling Good to Excellent
Pump
Assembly
w/ Upgraded Materials
Gas Handling Fair to Good
Solids Handling Fair to Good
Fluid Gravity >8° API
Servicing Workover or Pulling Rig
Prime Mover Type Gas or Electric
*Special Offshore Application Limited
Analysis
Required System Efficiency 45%-60%
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
®
Reciprocating Rod Lift
Sucker Rod
System Advantages
Tubing Anchor/
Catcher
High system efficiency
Optimization controls available
Sucker Rod
Economical to repair and service
Pump
Assembly
Positive displacement/strong drawdown
Upgraded materials reduce
corrosion concerns
Flexibility - adjust production
through stroke length and speed
High salvage value for surface &
downhole equipment
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
®
Reciprocating Rod Lift
Sucker Rod
System Limitations
Tubing Anchor/
Catcher
Potential for tubing and rod wear
Gas-oil ratios
Sucker Rod
Pump
Assembly
most systems limited to ability of
rods to handle loads - volume
decreases as depth increases
Environmental and aesthetic concerns
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
Reciprocating
Rod Lift Systems
®
Conventional Pumping Units
Long-Stroke Pumping Units
Low-Profile Pumping Units
Nitrogen-Over Hydraulic Units
Rod Pumps & Accessories
Sucker Rods
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
Ampscot™ and American™
Conventional Pumping Units
®
• Production rates up to
3,000 barrels per day.
• Well depth to 16,000 feet.
• High overall system
efficiency (electrical
and mechanical).
• Very low lifting cost
per barrel.
• Runs on natural gas,
propane, diesel or
electrical power.
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
RotaFlex®
Long-Stroke Pumping Units
®
First successful long-stroke
pumping unit in 40 years
24 foot stroke length for sucker
rod pumps
High production capability
High system efficiency and cost
effectiveness for deep, troublesome
and high-volume wells
Use in place of electric submersible
or hydraulic subsurface pumps
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
StrapJack™
Low Profile Pumping Units
®
Reducer sizes 114 up to 320
Low profile and OVP (slanthole) models available
Naturally compact, low height
High efficiency geometry
High well clearance
Low internal
structural stresses
Folding roller post
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
Nitrogen-Over-Hydraulic Units
®
Developed for fields with heavy
crude oil, wells with rod fall
problems and better well control.
Lifts greater loads using less energy
Handles PPRL’s up to 40,000 lbs.
Pumps depths to 10,000 ft.
Changes strokes per minute with
turn of a switch in either direction
Srokes per Minute can be as slow as 0 and
as fast as 9 (depending on model)
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
Rod Pumps
®
Variety of API pumps & accessories
- heavy wall
- thin wall
- combination heavy wall/stoke
through
Speciality pumps
- three-tube
- hollow-valve
- large volume stroke
through
- sandy fluid
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
Sucker Rods
®
Continuous Corod® Sucker Rods
API Sucker Rods
Ultra High-Strength EL® Sucker Rods
High-Strength XD Sucker Rods
Sucker Rod Couplings.
ARTIFICIAL LIFT SYSTEMS
© Weatherford. All rights reserved.
