The invention discloses a pressure and torsion resistance high-strength V groove self-cleaning anti-sand
sieve tube which belongs to a
petroleum exploitation mechanical anti-sand device. A
coupling is connected with a base tube; the base tube is provided with a round through hole along the axial direction; a filter component is fixed in the round through hole on the base tube; the outer
diameter of the base tube is provided with a protective tube. The filter component of the invention is welded on the base tube, and then a protective cover is welded on the filter component; next, the filter component is connected with the
coupling and access to the lower end of a
petroleum pipe to produce the
petroleum. In the anti-sand
sieve tube of the invention, the filter component with a V groove
filter element consisting of a plurality of circular rings with V-shaped gaps is fixed on the tube wall of the base tube, so as to overcome the defects of low strength, high
processing difficulty, high cost, etc. Fine sand can be discharged as the petroleum through elastic and vermicular filtering crack and spacing, so that the sand filtering procedure keeps self-cleaning; in this way, the gap size can mostly meet the
petroleum production requirements.