Safety factors above API
Critical structural components are well-engineered beyond industry standards, ensuring unmatched reliability in extreme conditions.
API 11E surface artificial lift
Beam Pumping Units
API beam and long stroke pumping units, engineered beyond industry standards and built in an ISO and API certified plant.
10,000+units delivered
5+structural safety factor
28-30gear reduction ratio
3D view needs WebGL.
Advantages
Built in an ISO and API certified plant
Our ISO and API-certified facility operates under the ULT Production System (UPS).
40 years of design heritage
Backed by over 40 years of engineering expertise, our designs incorporate best-in-class technical features, refined through hands-on field experience.
Sucker rod pumping specialists
Our core team includes sucker rod pumping specialists with deep operational knowledge, ensuring designs meet rigorous oilfield demands.
Running in the field.
Beam pumping unit technical details
Design features
Backed by more than 40 years in the industry and a team of metallurgists, mechanical engineers, and application engineers specializing in API beam pump design, manufacturing, and applications, ULT beam pumps represent the best in the industry in terms of safety, quality, performance, and reliability.
Gear Reducer
Gearbox
Made of ASTM A48 high grade cast iron or equivalent and made up of two pieces divided at the horizontal centerline of the shafting to allow easy field removal and replacement of all rotating elements. This grade of cast iron has better mechanical properties than the one used by other beam pumping unit manufacturers. Standard gearbox has an opening at the lowest point of the sump with a magnetic plug that captures metallic contaminants.
Gearing
Involute herringbone type and double reduction with a gear reduction of between 28 and 30.
Bearings
All gearbox bearings are of oversized axial free-floating straight roller type housed in individual bearing carriers that can be removed from the main gear housing. Bearings require no adjustment at initial installation or during maintenance or replacement procedures. Bearings exceed API 11E L-10 life requirements. All shaft bearing journals, seal areas and interference fit areas have a high degree of surface finishes.
Lubrication
The innovative lubrication system has a positive oil flow through all bearings throughout the full operating speed range at ambient conditions. The lubrication system requires no adjustments during maintenance procedures. A large oil sump capacity provides the lubricant time for entrained air to dissipate and to provide a quiet sump for contaminants to settle out of the lubricant thus preventing them from continuing to circulate through the gears and bearings.
Saddle Bearing Assembly
Saddle bearings are of double tapered roller type which offers superior load capacity on both axial and radial directions and therefore reliability and longevity. Our metal to metal seals prevent damages caused by over lubrication.
Equalizer Bearing Assembly
Equalizer bearings are of double tapered roller type which offers superior load capacity on both axial and radial directions and ensure excellent equalization of loading on both crank pins and pitmans. Lubrication is from the ground level.
Wrist Pin Assembly
Wrist pin failures are a common failure mode seen on beam pumping units. Our highly engineered wrist pins, along with advanced manufacturing processes and quality controls, eliminate premature wrist pin failures. The wrist pin housing is fitted with grease inlet and outlet fittings arranged such that the grease must travel through the bearing to its relief fitting thus assuring good grease lubrication. In addition, our oversized double row spherical roller bearings exceed the requirements specified by API 11E and have the longest life expectancy in the industry.
Safety
All structural components have a safety factor of more than 5.
The brake is fitted with a positive locking device to prevent the brake drum from turning in the event that the brake lever control system fails or is accidentally released.
The V-belt drive is fitted with a solid belt cover to provide belt protection from the environment and personnel protection from the belt system.
The horsehead is fitted with a safety device to secure the horsehead to the walking beam in the event of a high rod part and to act as a safety feature to prevent the horsehead from falling on personnel during a workover operation.
Open rail or meshed fence with lockable access gates. ULT standard height or per customer requirement.
Beam pumping unit FAQ
What is a beam pumping unit?
A beam pumping unit, often called a pumpjack, is the surface half of a sucker rod pumping system. It turns the rotary motion of the prime mover into the up-and-down stroke of the polished rod, which drives a downhole sucker rod pump.
Are ULT pumping units built to API 11E?
Yes. ULT API beam and long stroke pumping units are built in an ISO and API certified plant. Structural components carry a safety factor above 5, and the gear reducer and wrist pin bearings exceed API 11E life requirements.
What makes the ULT gear reducer different?
The gearbox housing is ASTM A48 high-grade cast iron, split at the horizontal centerline so every rotating element can be removed in the field. Gearing is double-reduction herringbone with a 28 to 30 ratio, and the lubrication system keeps positive oil flow through all bearings across the full speed range.
How many ULT pumping units are in service?
More than 10,000 ULT pumping units have been delivered to oilfields worldwide, backed by over 40 years of design heritage in sucker rod pumping.
Can I run a ULT pumping unit with a permanent magnet motor?
Yes. The ULT permanent magnet motor drives the gear reducer directly with no sheaves or belts, for 93% or higher total system efficiency. Add the VFD rod pump controller and a wireless load cell for pump-off control.
Do you install pumping units?
Yes. ULT field services crews install pumping units, foundations and gravel pans, change SPM, stroke length and counterbalance, and carry out inspections and preventive maintenance.
