Intelligent Pumping Unit
- Intelligent oil pumping jack is an efficient and energy-saving oil pumping unit that combines traditional beam oil pumping jack with modern advanced information collection technology and electrical control technology.
- Intelligent Beam Pump has the advantages of automatic data collection, remote control, intelligent balance adjustment under non-stop condition, automatic adjustment of impulse, voice prompt and voice alarm, soft start and overload protection.
- Intelligent Pump Jack is a new generation of oil production equipment with high integration of industrialization and information.
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Remote control.
Remote instruction, upload the relevant data, instruction operation accurately.
Signal acquisition.
Relies on the remote terminal, such as each kind of sensor completes the signal acquisition
Automatic adjustment
Automatic lubrication system, stroke and SPM can be automatically adjusted.
Early warning system
There is a set of special safety supervision system to monitor the operation status of the system.
- Highly intelligent
- Real-time data acquisition, analysis and transmission
Sanjack produces Intelligent Pumping Unit,API 11E series pumping unit and unconventional pumping unit, the annual production reaches 1200 sets. Sanjack is one of Schlumberger suppliers, among 5 chinese suppliers of Schlumberger, Sanjack pumping unit has the lowest failure rate, and enjoys high reputation among end users.
The beam pump factory is one of the main branches of Sanjack Group, which specializes in design, production, maintenance, sales and service of pump jacks. The factory has more than 240 employees, 130 sets of various large and medium-sized mechanical processing equipment, 10 million yuan of fixed asset.
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How to reduce the stroke frequency of the pumping unit mechanically?
A high-production oil well is usually concerned with increasing the stroke speed of the pumping unit as much as possible to improve the efficiency of oil production. However, for low-production wells and high-production wells in the later stage, it is unacceptable that the economic value of the oil that is pumped from the reservoir to the surface in each stroke is not greater than the cost of the consumed electricity. In this case, the pumping unit needs to operate with low stroke times to improve efficiency and reduce production costs.
In order to reduce the stroke frequency and energy consumption of the beam pumping unit, there are three commonly used methods. Firstly, improvement of the mechanical structure. The mechanical structure of the beam pumping unit is adjusted for energy saving, such as a double-horsehead pumping unit, curved beam pumping unit, front-mounted pumping unit, and other heterotypic pumping units. Secondly, replacement of traditional motors. The traditional three-phase asynchronous motor on the beam pumping unit is replaced by a specially-designed motor to improve energy efficiency, such as a high-slip motor and double-fed induction motor. Finally, installation of additional control devices.
The automatic adjustment of the stroke speed of the beam pumping unit is one of the most effective means of energy saving in the oil production field. A high-production oil well is usually concerned with increasing the stroke speed of the pumping unit as much as possible to improve the efficiency of oil production.
However, for low-production wells and high-production wells in the later stage, it is unacceptable that the economic value of the oil that is pumped from the reservoir to the surface in each stroke is not greater than the cost of the consumed electricity.
Some strategies have been adopted to solve this problem. A novel power-off control strategy was proposed to serve for the energy saving of the pumping unit and a dual pulse width-modulation frequency converter was introduced to keep the sucker rod running in an up-slowly-and-down-fast mode.
The operating parameters of the pumping unit should be adjusted according to the changes in the fluid production of the oil well, and the adjustment of the stroke rate is very important. After years of exploitation, the output of oil wells will gradually decrease, and the number of low-yield wells with insufficient fluid supply will gradually increase.
For pumping units used in low-yield wells in oil fields, the impact rate is correspondingly reduced and generally needs to be reduced to less than 2 times per minute. Limited by the speed of the motor and the reduction ratio of the pumping unit, the minimum stroke rate of the conventional beam pumping units can only reach 4 times per minute, which is much higher than the needs of low-yield wells, and this results in the phenomenon of empty pumping in low-yield wells, increased power consumption, serious wear of oil pipes, sucker rods, and pumps, and reduced equipment life.
At present, the commonly used method for pumping units in oil fields is to install variable frequency motors and variable frequency control cabinets, which have two problems.
First, the variable frequency motor and the variable frequency control cabinet are expensive and the use cost is high.
The second is that it is difficult for variable frequency equipment to be used in the harsh working conditions of the pumping unit for a long time without failures, such as rain, snow, wind, and sand.
Third, the installation, maintenance, and adjustment of frequency conversion equipment require professional electrical engineers to operate, and ordinary oil production workers cannot complete the operation.
In response to the above problems, Sanjack has developed an ultra-low stroke conventional beam pumping unit, which reduces the stroke frequency of the pumping unit to less than 1 stroke/min.
The pumping unit consists of (1) base, (2) bracket, (3) suspension rope, (4) donkey head, (5) walking beam, (6) middle seat, (7) cross beam, (8) connecting rod, (9) Walking beam counterweight, (10) crank, (11) large reduction ratio gearbox, (12) motor, (13) brake.
structure diagram
(1) base, (2) bracket, (3) suspension rope, (4) donkey head, (5) walking beam, (6) middle seat, (7) cross beam, (8) connecting rod, (9) crank, (10) Large reduction ratio gearbox, (11) guardrail, (12) motor, (13) brake.
Large reduction ratio gearbox structure diagram
Among them (10) the gearbox is a four-axis three-stage gearbox with a reduction ratio of 120:1 to 150:1. This type of gearbox greatly improves the reduction ratio and can reduce the stroke rate of the pumping unit to 1 per minute, which effectively avoids the phenomenon of empty pumping in low-yield wells, reduces the abrasion of oil pipes, sucker rods, and pumps, and reduces electric power consumption by more than 60%.
The long, slow pump stroke allows more time for fluids to enter the pump intake, which increases pump fillage and lifting efficiency. The long-stroke, efficient counterbalance system, and unique unit geometry also increase system efficiency and energy savings.