Switching type tubing pump blanking plug
A tube pump and plug technology, which is used in wellbore/well components, earthwork drilling, sealing/packing, etc., can solve problems such as unreasonable, prolonged workover operation, time-consuming and labor-intensive, and improve reliability. Effect
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[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0035] See Figure 1 to Figure 8 , A switch-type tube pump plug, comprising an upper joint 1, a connecting body 7, a lower joint 13 and a central pipe 2. The upper end of the central pipe 2 is sleeved in the upper joint 1, and the inner wall of the upper joint 1 is a two-stage stepped type , The center tube 2 is fixed with a snap ring 6, and the center tube 2 is also provided with an annular boss, the ring boss is engaged with the boss at the second step of the inner wall of the upper joint 1, and the snap ring 6 is A track sleeve 3 is arranged between the platforms. The outer wall of the track sleeve 3 is provided with a long track, a short track and a reversing track. The long track, short track and the reversing track form a closed section, and the long track and the short track are arranged alternately , A reversing track is provided between each long track...
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