Electric Submersible Pumps (ESP)

Diffusor and impeller = 1 stage

Electric Submersible Pumps from Oil Dynamics are multi-stage centrifugal pumps with a variety of specific speed designs that offer optimized solutions for your specific lift requirements in terms of both flow and pressure. Each ESP is individually designed based on well conditions. ESP systems can be installed in almost any production well regardless of depth and inclination. Typical applications are:

• Crude oil production
• Thermal water lifting
• Waterflood protection
• Mine dewatering

The production rates vary between 350 and 70.000 barrels per day (BPD) or 2 to 460 m3/hr. Various seal or protector designs are available to suit the individual application requirements. Gas separators and gas compression stages allow the operation in wells with high gas content. The electric motor system can be either standard induction (asynchronous) design or permanent magnet (synchronous) design depending on the application, customer preference and suitability. A range of down-hole data sensors that allow the transfer of all critical system data to the surface controls completes the system.

Electric Submersible Progressive Cavity Pump (ES-PCP)

The ESPCP differentiates from the ESP mainly in the hydraulic section. The hydraulic section consists of a helical rotor that turns inside a twin helical elastomeric or metal stator. Typical production rates are between 5 and 3.000 BPD with maximum differential pressures up to 300 bar. Due to the low RPM of the ESPCP system compared to the ESP (typical RPM of the ESPCP ranges from 50 to 400 RPM), two drive systems are widely used: Induction motor with speed reduction gear or Permanent magnet Motor (PMM). Oil Dynamics’ choice is the PMM which eliminates the need for speed reduction gear and step-up transformer. The PMM also has the additional benefit of low-temperature rise due to the high electrical efficiency. The low-temperature rise positively influences the MTBF of the elastomeric stator of the hydraulic section. Typically, ESPCPs are used in:

• Deviated or horizontal wells
• Applications with settings over 1.000 meters
• High-viscosity fluids
• High sand cut applications

Oil Dynamics does not manufacture the hydraulic section where special expertise is required, however; we combine our submersible technology knowledge with the know-how of a leading manufacturer of PCP technology.

Horizontal Pumping Systems (HPS)

Horizontal Pumping Systems are based on the same proven multi-stage hydraulic components as ESP. The HPS is designed for a wide range of applications such as

• Crude oil transfer
• Water injection
• Geothermal water injection and circulation
• Industrial high-pressure  low flow applications
• Mine dewatering
• LNG transfer
• Boiler feed service

HPS is designed and built for harsh oil-field operating conditions where high pressure is needed and gas content is rather low than high. They provide a cost effective alternative to conventional horizontal split multistage pumps thus offering the benefit of low initial cost and long MTBF. Oil Dynamics manufacturers a rugged proprietary design that can be tailored to each specific application requirements with a variety of mechanical seal arrangements, drive trains, flexible suction and discharge arrangements, forced feed lubrication systems and complete instrumentation.

Twin Screw Pumping Systems (TSP)

Twin Screw Pumping Systems are based on a two rotor (screw type) concept. This design allows pumping of basically any liquid. The pump’s design varies depending on the application, needed pressure or desired flow. Hence, internal or external bearing design are available as well as integral shafts, rotors and replaceable liners. In general, twin screw pumps can be used for any viscose liquids and also gassy fluids. The available, different standard designs allow all to customize material, seal or mounting options.

These surface pumping systems are designed for a wide range of applications similar like the HPS. However, the TSP can handle up to 100% gas. Furthermore, as Multiphase Pumping System (MPS) and connected to the upstream section, separation center, heat treaters, flare systems, washing units etc will be obsolete at this level. The MPS is the perfect pump for transferring crude oil, water and gas in any volumetric composition.