CN205714639U - A kind of oil exploitation oil well pump - Google Patents

Abstract

The utility model discloses an oil well pump for oil exploitation, which comprises a motor, a transmission shaft, a screw and a pipe body, the motor is arranged on the pipe body, a sealing cover is arranged between the motor and the pipe body, and the transmission shaft is arranged Below the motor, the transmission shaft is connected to the motor, the screw is arranged in the pipe body, the screw is fixedly connected to the transmission shaft, the end of the screw is provided with an impeller, the impeller is fixedly connected to the screw, and the pipe body The inner side is corrugated, a sealing chamber is arranged between the pipe body and the screw rod, and the sealing chambers are equidistantly distributed, and a filter screen is arranged at the bottom of the pipe body. High, good running stability.

Description

Oil well pump for oil exploitation

technical field

The utility model relates to an oil well pump for oil exploitation.

Background technique

The oil pump refers to the downhole device driven by the pumping unit to lift the crude oil in the well to the ground. The ordinary oil pump is mainly composed of four parts: the pump barrel, the suction valve, the piston, and the discharge valve. According to the fixing method of the oil pump in the well, it can be divided into tube pump and rod pump. Tubular pumps are also called tubing pumps, which are characterized in that the outer cylinder, bushing and suction valve are assembled on the ground and connected to the lower part of the tubing and lowered into the well first, and then the piston equipped with the discharge valve is lowered into the pump through the tubing with the sucker rod. middle. The bushing is machined into several sections from the material and lined inside the outer cylinder. The piston is a hollow cylinder made of seamless steel pipe, with a smooth outer surface and an annular groove. The function is to gather the sand particles entering the gap between the piston and the bushing in the groove to prevent the sand particles from wearing the piston and the bushing, and the groove The oil stored in the groove acts to lubricate the surface of the piston. In order to drain the oil in the oil pipe when checking the pump and starting the pump, a salvageable suction valve (fixed valve) can be used. By lowering the rod column, the buckle at the lower end of the piston bites the fishing head of the suction valve, and the suction valve is lifted out. However, this kind of pump has a large anti-shock distance and clearance volume due to the space in the pump occupied by the fishing head of the suction valve, which is easily affected by the gas and reduces the pump efficiency. Most of the wells that run into the pipe pump at present are to install an oil drain at the bottom of the oil pipe, and unload the oil in the oil pipe by opening the oil drain. In the well where the large pump is run, because the diameter of the piston is larger than the inner diameter of the tubing, the piston cannot be run through the tubing. The method used is to first run the piston into the well with the tubing, and then into the sucker rod string, using a device called a disconnector. Docks with the piston in the pump.

At present, the existing oil well pump has complex structure, low oil pumping efficiency and poor structural stability during operation.

Utility model content

The technical problem to be solved by the utility model is to provide a simple structure, high oil pumping efficiency, and good operation stability of the oil well pump.

In order to solve the above problems, the utility model adopts the following technical scheme: a kind of oil well pump for oil exploitation, including a motor, a transmission shaft, a screw and a pipe body, the motor is arranged on the pipe body, and a pump is arranged between the motor and the pipe body There is a sealing cover, the transmission shaft is arranged under the motor, the transmission shaft is connected with the motor transmission, the screw is arranged in the pipe body, the screw is fixedly connected with the transmission shaft, the end of the screw is provided with an impeller, and the impeller It is fixedly connected with the screw, and the inner side of the tube body is arranged in a corrugated shape, and a sealing cavity is set between the tube body and the screw rod, and the sealing cavities are equidistantly distributed, and a filter net is set at the bottom of the tube body.

Preferably, an oil outlet pipe is provided on one side of the pipe body to facilitate the discharge of crude oil.

Preferably, the oil outlet pipe is arranged horizontally to keep the oil discharge smooth.

As a preference, a solenoid valve is arranged on the oil outlet pipe to facilitate the control of oil outlet from the oil outlet pipe.

Preferably, the motor is a servo motor, which is convenient for adjusting the rotation speed of the motor.

The beneficial effects of the utility model are: the set motor can drive the screw to rotate through the transmission shaft, and the screw can carry out the oil delivery operation with the sealed cavity formed inside the pipe body to maintain good running stability, and the impeller at the end of the screw can increase the oil delivery The efficiency is high, and the oil delivery is kept smooth. The filter screen can effectively filter impurities and prevent damage to the impeller.

Description of drawings

Fig. 1 is a structural diagram of an oil well pump used in petroleum exploitation according to the utility model.

detailed description

As shown in Fig. 1, a kind of well pump for oil exploitation comprises motor 1, drive shaft 2, screw rod 3 and pipe body 4, and described motor 1 is arranged on pipe body 4, and between described motor 1 and pipe body 4 A sealing cover 5 is provided, the transmission shaft 2 is arranged under the motor 1, the transmission shaft 2 is connected to the motor 1 in transmission, the screw rod 3 is arranged in the pipe body 4, and the screw rod 3 is fixedly connected to the transmission shaft 2, The end of the screw 3 is provided with an impeller 10, the impeller 10 is fixedly connected with the screw 3, the inner side of the pipe 4 is corrugated, and a sealing cavity 6 is arranged between the pipe 4 and the screw 3, and the sealing The cavities 6 are equidistantly distributed, and the bottom of the tube body 4 is provided with a filter screen 7 .

An oil outlet pipe 8 is arranged on one side of the pipe body 4 .

The oil outlet pipe 8 is arranged horizontally.

The oil outlet pipe 8 is provided with a solenoid valve 9 .

The motor 1 is a servo motor.

The beneficial effects of the utility model are: the set motor can drive the screw to rotate through the transmission shaft, and the screw can carry out the oil delivery operation with the sealed cavity formed inside the pipe body to maintain good running stability, and the impeller at the end of the screw can increase the oil delivery The efficiency is high, and the oil delivery is kept smooth. The filter screen can effectively filter impurities and prevent damage to the impeller.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any change or replacement that is not thought of through creative work should be covered within the scope of protection of the utility model .

Claims (5)

1. An oil well pump for oil development, characterized in that: it comprises a motor, a transmission shaft, a screw rod and a pipe body, the motor is arranged on the pipe body, a sealing cover is arranged between the motor and the pipe body, and the transmission The shaft is arranged under the motor, the transmission shaft is connected with the motor transmission, the screw is arranged in the pipe body, the screw is fixedly connected with the transmission shaft, the end of the screw is provided with an impeller, and the impeller is fixedly connected with the screw. The inner side of the pipe body is arranged in a corrugated shape, a sealing chamber is arranged between the pipe body and the screw, and the sealing chambers are equidistantly distributed, and a filter net is arranged at the bottom of the pipe body. 2. The oil well pump for oil exploitation according to claim 1, characterized in that: an oil outlet pipe is arranged on one side of the pipe body. 3. The oil well pump for oil exploitation according to claim 2, characterized in that: the oil outlet pipe is arranged horizontally. 4. The oil well pump for oil exploitation according to claim 3, characterized in that: the oil outlet pipe is provided with a solenoid valve. 5. The oil well pump for petroleum exploitation according to claim 1, wherein the motor is a servo motor.