Double-filtering layer meander circular seam self-cleaning sieve tube
A filter layer and meandering technology, applied in the production of fluids, wellbore/well components, earth-moving drilling, etc., can solve the problems of residual material in the well, large pipe diameter, low permeability, etc., and achieve uniform size of filter cracks , Excellent sand control performance, high filter gap effect
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[0032] Label in the figure
[0033] 1 Center cap 101 Step surface 102 Step surface
[0034] 2 Filter ring
[0035] 201 Step surface 202 Step surface 203 Step surface 204 Step surface
[0036] 3 Filter ring
[0037] 303 Step surface 304 Step surface 305 Step surface 306 Step surface
[0038] 4 Fixing ring
[0039] 401 Conical surface 402 Cylindrical surface 405 Step surface 406 Step surface
[0040] 5 Protective cover 501 inner wall
[0041] 6 steps 7 steps 8 steps 9 steps
[0042] 10 step 11 step 12 filter slot 13 filter slot
[0043] 14 Filter slot 15 Transom 16 Step hole 17 Coupling
[0044] 18 Thread 19 Filter element 20 Base tube
[0045] Please refer to Figure 1, figure 2 , image 3 , Figure 4 , Figure 5 , The present invention is a dual-layer meandering ring seam self-cleaning screen, which is composed of a filter element 19 and a base pipe 20. The filter element 19 is composed of a central cap 1, two filter rings 2, 3, a fixed ring 4, and a protective cover. 5 compositio...
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