Classification of pump and control of pump barrel leakage

1. Classification of pump

(1)tubing pump

Tubular pump, also known as tubing pump, is characterized by the outer cylinder, bushing and suction valve assembled on the ground and connected to the lower part of the tubing first into the well, and then the piston equipped with the discharge valve is lowered into the pump through the tubing rod.

The pipe pump is simple in structure, low in cost, and allows the pump diameter under the same pipe diameter to be larger than the rod pump, so the displacement is large. It is suitable for Wells with low pumping depth and high production.

(2)rod pump

The rod pump is also known as the insert pump, wherein the fixed cylinder type top fixed rod type pump is characterized by two inner and outer working barrels, the upper end of the outer working barrel is equipped with a spine seat and a circlip (the position of the circlip is the depth of the pump), the outer working barrel is first lowered into the well with the oil pipe, and then the inner working barrel equipped with a bushing and a piston is connected to the lower end of the sucker rod into the outer working barrel and is fixed by the circlip.

2. The cause of the leakage of the pump barrel

In the process of crude oil pumping, the leakage of pump barrel seriously affects the efficiency of crude oil pumping, causing serious problems such as delayed work, energy waste and economic loss of crude oil companies. There are several reasons for this:

(1)The upper and lower stroke pressure of the plunger is too large.

(2)The upper and lower valves of the pump are not strict.

(3)The operation error of the staff.

3. Handling measures for the leakage of the pump barrel

(1)Strengthen the working quality of the crude oil collection process of the pump

The main reason for the oil leakage of the pump barrel lies in the construction quality, so it is necessary to increase the awareness of responsibility training of the crude oil collection personnel, and operate in strict accordance with the crude oil collection specifications, especially the maintenance and repair of the pump barrel.

(2) Strengthen the strength construction of the pump barrel strength

The use of advanced science and technology to strengthen the internal structure of the pump barrel, to create a solid internal structure, to adapt to high pressure, high stroke pump barrel.