TIME ROLLING · OIL & GAS PRODUCTION
Oilfield Pumping Units
Time Rolling supplies surface pumping units for sucker rod artificial lift. The range includes conventional API beam units, double-horsehead units, slant-hole units and long-stroke belt designs.
- Surface pumping unit range
- 4 designs
- Conventional beam units
- API 11E
- Slant-well design range
- 30–35°
API standard beam pumping units
Conventional beam pumping units conform to API Specification 11E. Their straightforward structure is designed for reliable oil production, accessible installation and routine maintenance.
- Box-section or welded H-beam walking beam for strength, rigidity and load capacity.
- Herringbone involute or double circular-arc gearing in the reducer.
- Swing-away horsehead movement to the side or upwards for workover access.
- Heavy-duty center and equalizer roller bearings with reliable sealing.
- Self-aligning equalizer bearing to reduce mounting error and operating vibration.
- Internal-expansion or external-contracting brake for straightforward operation.
Double-horsehead pumping units
A long stroke and low strokes per minute (SPM) make this design suitable for medium- and high-viscosity oil and production with high water content. Reduced dynamic loads and torque variation support smooth starting and operation.
The published comparison with the corresponding conventional model reports approximately 70% longer stroke, 20–30% lower energy consumption and 50% lower installed capacity.
- Electrical cabinet with short-circuit, overload and underload protection.
- Automatic restart after power restoration and motor overspeed control.
- Numerically controlled flame cutting for accurate components and surface quality.
Slant-hole pumping units
Designed for crude-oil production from inclined wells with deviation angles of 30–35°. Each unit uses a fixed-angle support matched to the well deviation and the customer’s specified arrangement.
Long-stroke belt pumping units
The wide-belt pumping unit develops the conventional chain-type design into a compact mechanical transmission system. Long strokes at low frequency are especially relevant to deep-well and heavy-oil recovery.
The long stroke helps improve pump utilization and reduce pressure surges. Low-frequency operation limits wear on downhole equipment, while an elastic, heavy-duty transmission belt cushions direction changes.
- Adjustable workover position and automatic relocation device for easier access.
- Long-life belt, heavy-duty chain and lubrication system to support service intervals.
- Mechanical balancing and automatic protection functions.
- Foldable arrangement for transportation, with additional electrical braking available on request.
- Optional automatic stroke control and production control for unattended operation.
