A New Submersible Electric Plunger Pump
A technology of plunger pump and submersible oil, which is applied in wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problems of sand control structure durability and sand control effect, unfavorable production efficiency, motor damage, etc., to achieve Prevent fracturing sand from entering the motor, improve sand control effect, and ensure elasticity
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Embodiment 1
[0031] Such as figure 1As shown, this embodiment includes a motor, and the motor includes an outer cylinder 7 , a stator 8 installed in the outer cylinder 7 , and a mover 4 passing through the stator 8 . A balance screen 3 is fixedly connected to the lower end of the outer cylinder 7, and a through hole is opened in the pipe wall of the balance screen 3, and a balance joint 1 is fixed at the lower end of the balance screen 3, when the mover 4 When moving downwards, the mover 4 extends into the balance screen 3; these are the same as the prior art, and will not be repeated here. In this embodiment, in order to prevent gravel from entering the motor from the self-balancing screen 3, the following sand control design is carried out on the lower part of the motor: the lower end of the outer cylinder 7 is fixedly connected to the balancing screen 3 through the lower joint 6 of the motor, and the lower joint of the motor The outer wall of 6 is threaded with the outer cylinder 7, an...
Embodiment 2
[0036] Such as figure 1 , figure 2 , image 3 , Figure 6 and Figure 7 As shown, the sand scraping device 15 includes an inner layer 1513 and an outer layer 1511, and the outer layer of the sand scraping device 15 includes a third conical section and a third cylindrical section from top to bottom, and the third conical section The upper end of the inner wall is against the outer wall of the polished rod 12, the middle part of the inner wall of the third conical section is a conical surface adapted to the outer wall, and a through hole is opened in the middle part of the third conical section. The inner wall at the intersection of the lower end of the third conical section and the third cylindrical section also abuts against the outer wall of the polished rod 12 . A through hole is opened in the middle of the third cylindrical section, and the lower part of the third cylindrical section is sleeved on the first cylindrical section of the inner layer 1513 and fixed by weldi...
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