KUDU - PCP Progressive Cavity Pumps

The KUDU PCP is a positive displacement pump with a single helical rotor, which rotates inside a double internal helical elastomer-lined stator. The stator is run into the well on the bottom of the production tubing, while the rotor is connected to the end of the drive string. The rotor turns eccentrically in the stator, forming cavities from the intake at the bottom of the pump to the discharge at the top of the pump.

The PCP delivers a constant flow that is proportional to the size of the cavity and rotational speed of the rotor. Rotation of the rodstring at surface is powered by a hydraulic or electric drive system, which causes the rotor to spin within the fixed stator, resulting in fluid production at surface. Schlumberger also offers a high-temperature system, featuring an all-metal PCP capable of withstanding the extreme downhole conditions of thermal recovery.

Elastomers
Proprietary elastomers provide significant improvements in bond strength, tear strength, abrasion resistance, gas and water resistance, and temperature ratings, expanding the use of PCPs to additional environments. Elastomers are primarily made of nitrile, a copolymer of butadiene, and acrylonitrile. In addition, a fluorocarbon elastomer for greater resistanceto aromatics and H2S is available.

Rotors
The rotor is the moving component of a PCP and is held from the surface by the drive string, which is typically a conventional or continuous sucker rod. The amount or degree of interference fit is critical to the efficiency and life expectancy of the pump. Interference fit is changed by choosing a different rotor minor diameter.

EVEN WALL PCP
EVEN WALL uniform-elastomer PCP provides a uniform elastomer thickness, resulting in an even temperature distribution under swell conditions. Because the elastomer swells evenly, it enables a more consistent fit between the rotor and stator, ultimately improving pump performance.

KUDU Tough Coat Rotor Coating
KUDU Tough Coat rotor coating is a spray metal coating applied to PCP rotors. Rotors with this coating have significantly improved corrosion resistance compared with typical chrome rotors, resulting in longer rotor life, increased production efficiency, and lower operating costs.

APPLICATIONS

• Heavy, medium, and light oil wells
• Dewatering of coalbed methane and conventional gas wells
• High-water-cut and sand-cut environments
• Highly corrosive wells
• Thermal applications
• Horizontal, slant, and directional wells
• Water source wells

BENEFITS

• Produces in high-viscosity and high-sand-concentration fluids
• Tolerates high percentage of free gas
• Resists abrasion
• Generates low levels of noise
• Reduces lifting cost
• Provides the highest overall efficiency among all artificial lift methods

FEATURES

• Smaller footprint than other forms of artificial lift systems
• High-capacity and high-head lift pumps
• Low internal shear rates to limit fluid emulsification through agitation
• No valves or reciprocating parts to clog, wear, or create gas lock
• Elastomers resistant to most crudes
• Various tag sub intakes
• Wide range of geometries
• Standard rotors with paddles to improve sand handling
• Standard EUE and NUE stator connections machined directly onto the stator tube
• All-metal PCP using special metallurgy to resist wear and maximize run life
• Proprietary KUDU Tough Coat* corrosionand abrasion-resistant rotor coating
• EVEN WALL® uniform-elastomer PCP to ensure uniform elastomer thickness in the PCP stator
• Easy to install and operate
• Low maintenance required
  
  
  Efficiently handle solids and high-viscosity fluids

KUDU PCPs efficiently handle solids and high-viscosity fluids with superior engineering that delivers a consistent head capacity.

The KUDU PCP delivers a constant flow, proportional to the size of the cavity and the rotational speed of the rotor. A hydraulic or electric drive system at the surface rotates the rod string, which causes the rotor to spin within the fixed stator, resulting in fluid production at the surface.

• Fluid rates up to 2,830 bbl/d [450 m3/d]
• High-temperature rating up to 660 degF [350 degC]
• Adjustable rpm to match reservoir inflow rates
  

Match your well conditions with the best-suited PCP solution

Maximize production while leaving a minimal footprint with progressing cavity pump (PCP) systems. The KUDU PCP is a positive displacement pump with a range of models, elastomers, and rotor options to meet your specific application. These PCPs are designed to deliver a consistent head capacity with superior handling of solids and high-viscosity fluids.