Slitting screen is widely used in old well regeneration, new oil well and exploration (test) well, offshore oil production well and pumping pipe, used in horizontal well, side drilling, radial branch well or open hole, gravel pack screen completion and limited sand control.

Currently slotted sieve tube hole sewing processing methods mainly include the use of flake cutter milling method and flake grinding wheel grinding method, although the two methods are currently used in the screen processing common processing method, but because of the limited amount of milling, grinding and flake milling cutter and the strength of the flake grinding wheel, not only make the machining efficiency is low, and the cutting of smaller gap are above 0.35 + / - 0.05 mm.

Slit screen machining is to cut hundreds of longitudinal cracks on the steel body with high strength by cold or hot machining. The common slit specification ranges from 0.15-3 mm in slit width to wider and 50-200 mm in slit length. The section types are: rectangle, trapezoid, special, etc., there are also circular pass screen, hole diameter specification range 5-20 mm. The quality of hole cutting of slotted sieve tube mainly depends on the precision of width of hole, the shape of cross section of hole, the finish of edge of hole and the corrosion resistance of hole.

The use of laser cutting machine tool cutting screen in all aspects of the availability has been clearly placed in front of us. With laser cutting processing of slotted sieve tube well-shaped seam, high finish, good corrosion resistance, metallographic structure around the seam little change (according to the experiment statistics from the kerf width 0.98 mm think metals metallographic structure does not change), smaller seam width up to 0.2 + / - 0.05 mm, or smaller, these are all common machining methods cannot reach.