Your Reliable Manufacturer For
API Pumping Unit
Sanjack set up the pumping unit factory in 1987. The pumping unit manufacturing factory is one of the main branches of Sanjack Petro. It is a professional manufacturer specializing in the development, design, production, remanufacturing, maintenance, sales and service of pump jack. The beam pump factory has 235 employees, more than 130 sets of various large and medium-sized mechanical processing equipment, fixed assets of 12 million yuan, annual output of 1,200 sucker rod pumping units, and annual sales income of 200 million yuan. It is a pillar enterprise of Sanjack Petro.
There are 4 senior engineers, 12 intermediate engineers, 7 assistant engineers, 4 senior technicians and 12 technicians in the nodding donkey. Intermediate and senior workers account for more than 90% of all workers. The superb technical level of employees provides a technical guarantee for the production of high-quality pumping units.
There are 4 senior engineers, 12 intermediate engineers, 7 assistant engineers, 4 senior technicians and 12 technicians in the nodding donkey. Intermediate and senior workers account for more than 90% of all workers. The superb technical level of employees provides a technical guarantee for the production of high-quality pumping units. If you are looking for oil well pump jack manufacturers in China, you are in the right place. Sanjack is one of the most reliable oil well pump jack manufacturers.
Sanjack Petro API Pumping Unit
Sanjack Petro design & manufacture Oil Pump Jack, API Pumping Unit, RM pumping unit, Compound balance pumping unit,Beam balanced pumping uni(B type), Low Profile pumping unit, Double-horsehead Pumping Unit, Diameter adjust moment regulate pumping unit, External Rotor Electric Motor Pumping Unit..
Why Sanjack Petro Exported
- Sanjack has 30+ years of pumping unit manufacturing experience..
- Sanjack has 20 years of API 11E pumping unit manufacturing experience.
- Sanjack has subsidiaries in 5 countries and offices in 20 countries.
- Sanjack are able to provide installation and after-sales service worldwide.
- Sanjack’s pumping units come with a 5-year warranty.
How We Control Quality
Sanjack Petro owns world-class laboratories which align with API
Commonly Asked Questions on API Pumping Unit
1). Running behavior. Under full load, the pumping unit runs smoothly without impact, vibration or abnormal noise.
2). Horsehead stability. The horsehead does not tremble when the pumping unit is running at full load.
3).Seal ability of finished product. After two hours full load operation of the pumping unit, all the seals have no leakage.
4). Reducer Bearing temperature rising stably. After two hours full load operation of the pumping unit, the bearing temperature rise could not surpass 40 ℃ and the final temperature could not surpass 70℃.
5) Reducer oilsump temperature rising stably. After two hours full load operation of the pumping unit, the oilsump temperature rise could not surpass 40 ℃ and the final temperature could not surpass 70℃.
6). Noise level(dBA). After full load operation, use sound level meter to test, the measuring points distribute two ends of output shaft, calculate average value.
7). Donkey head hanging point projection
After running at full load for 2 hours, the theodolite should measure at least three points in the middle except for the upper and lower starting points.
8). Scissors difference between two cranks. After full load inspection, use mandrel to test, scissors could not surpass the following range.
9). Reliability of brake mechanism. Using the tensioner to guarantee the brake mechanism is steady and reliable, and when crank was in horizontal position, the brake force could not more than 150N. when release brake device, the brake sub and brake belt could not have any contact.
10). Contact area of two cranks and driven shaft. By coating red lead inspection, the upper and bottom contact area of wedge bond could not less than 80%, and every square centimeter should have contact points..
The RM pumping unit has changed the connection mode between the beam and the beam, and the tail of the beam is at an Angle of 20°. According to calculation, this structure can make the four-bar mechanism of the pumping unit operate more stably, reduce the impact force of load on the connecting bolts, and ensure the service life under the maximum impact load.
1). Pre-sale consultation. Our professional and technical personnel can provide pumping unit design schemes based on customer’s requirements and oil well information.
2). After-sales service. We can provide pumping unit site installation, installation guidance, maintenance, troubleshooting and repair of various after-sales services (charges).
We suggest that concrete foundation height should be in the range from 400mm to 600mm（15.75—23.622in）.
1).Exact type of pumping unit. We can design the pumping unit only when the model is determined.
2).ECB value of beam pumping unit. ECB is an important parameter of pumping unit, which determines the load lifting capacity and weight of pumping unit. If you cannot provide the exact ECB value, then our engineers will choose the ECB value most commonly used for this type of pumping unit.
3). Ambient temperature information of the place where the pumping unit is used. Whether there are extreme temperatures below -40℃, if so, please provide information on the average length of each year.
4). Whether the motor and control cabinet are needed? If the pumping unit needs to be equipped with motors and control cabinets, please provide their parameters requirements, such as the AC power frequency of the place where it is used, the rated voltage, the explosion-proof level of the motor, whether it is an American standard motor, etc.
1) Polished rod dynamometer:
A dynamometer card analysis is the most accurate method for determining loading and counterbalance. This involves using a dynamometer to record the well load through a stroke cycle and then using torque factors to determine the reducer torque and counterbalance required for balanced conditions.
A clip on ammeter may be used to compare the upstroke and down stroke current on electrically powered units. When the counterbalance is adjusted so that the current peaks are equal, the unit will be roughly in balance.
3) Vacuum Gauge:
A vacuum gauge may be used to compare torque peaks on engine driven units much like the ammeter is used on electrically driven units. Vacuum pressure decreases as engine output increases.
4) Sound of the Prime Mover:
An approximate estimation of balance can be made by listening to the characteristic sound of the prime mover as it drives the unit. Some speed change will occur as the peak loads are approached-, speed changes will cause the sound of the prime mover to vary.
5) Belt Tension:
Belt tension and subsequent belt stretch increases with load. This causes an proportional amount of slack in the belts on the side opposite the direction of rotation of the prime mover. A visual inspection of the belt sag on upstroke or down stroke can be used to estimate counterbalance.
After beginning to work, the pumping unit must be confirmed non-overload and in balance. Examination of the pumping unit balance, power balanced method, torque moment balanced method or current balanced method can be all used.
For example, the current balanced method is that after the pumping unit balance have been adjusted, the maximum different current value between the upstroke motor and the down-stroke motor of the pumping unit should be confirmed to be no more than 15% of the maximum current.