Semi-tubular double cavity rod pump extraction technology

Semi-tubular double cavity rod pump extraction technology
Recently, the 5-inch half-tube double-cavity rod pump extraction technology independently developed by scientific research personnel of Shengli Oil Production Research Institute has been successfully applied to the wells of piles 1-22, which is the second successful application after the Well 84-Ping 2 Wells indicate that the technology is becoming mature and will enter the stage of scale promotion.
With the continuous development of Shengli Oilfield, nearly 1,000 5-inch half-casing oil wells have entered the high water cut development stage in the integral and fault block reservoirs represented by Jidong, Gudao, Shengtuo and Zhuangxi oil fields. The main problem they face is that they need to increase the amount of liquid discharged, but they are also limited by the smaller diameter casing restrictions and are powerless. Although the electric submersible pump lift can meet the requirements of large displacement pumping, it has high input costs and large pumping energy consumption.
In response to this problem, the scientific research personnel of the Institute of Mining Machinery have devoted themselves to the research and development and have independently developed a 5-inch half-casing oil well double chamber parallel rod pump extraction technology. This technology utilizes a double-pump parallel structure with a rod pump. Under the auxiliary pump, the technology of anti-bending, optimization of process parameters, and anti-corrosion and anti-offset grinding techniques are applied. It can not only increase the discharge volume without increasing the outer diameter of the pump and the low stroke times. , And can replace the vast majority of electric pump production, to achieve energy-saving production.
Compared with conventional pumps, the new pump can discharge more than 200 cubic meters/day in a 5-inch half-pipe. This technology achieves large-displacement lifting of the rod pump within the small casing, which at least gives rise to the “upgrading” of the production of 1000 small casing wells in Shengli Oilfield.

Concrete Pole Spinning/Centrifugal Machine:

Concrete Pole Spinning/Centrifugal Machine is mainly apply to produce High strength centrifugal technology Prestressed Reinforced concrete pole(SPC pole) by spinning formed. According to customer's effeciency request, there are Single wheel spinning machine and Double wheel spinning machine at customer's option, it is equipped with a stepless speed-variation motor and a control panel, it works smoothly and its speeder is of wide-range. Its box base is sturdy and durable and easy for installation.

 Spinning Machine's Advantages:

1. Unique "slot" design, change the screw limit between the bearing support and the base plate with the card slot and bolt limit. Both up and down sides of the spinning machine panel, undersurface and two sides of bearing support go through fine machining. Though the process is complex, it makes it more solid during high-frequency vibration of bearing support and the floor. Repair and replacement also have interchangeability.

Spinning machine for concrete pile

2. Connection shaft is whole shaft, to avoid stress concentration brought by shaft diameter changes, resulting in the phenomenon of "shaft-broken".

Spinning machine for electric pole

3. The limit side of the support wheel is removable. It is convenient for users to replace.

Centrigual machine for Concrete spun pile

4. Frequency-conversion cabinet of spinning machine records process parameter of each pipe and output reports, provides the office computer data communication interface.

Spinng machine automatic controller


Spinning Machine Technical Parameter:

Wheel Distance(mm)


Central wheel Distance(mm)


Wheel Diameteri(mm)


Axle Diameter(mm)


Automatic controller for centrifugal concrete pile machine



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SPC Pole Spinning Machine

Concrete Pole Machine,Spc Pole Spinning,Spun Pile Spinning Machine ,Spun Concrete Pile Mould

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