Oil sand control tube

Oil sand control tube

The seam can be welded along the axis of the pipe body by straight seam welding; the unique spiral distribution of the seam is formed by spiral welding, which significantly improves the strength of the filter sleeve. When the part is locally squeezed, the pressed part is reduced or closed by the external force to ensure the reliability of the sand control. Using precision punching technology, the punching opening of the stainless steel punching filter sleeve is on the side, which reduces the direct erosion of the sand layer. The gap clearance processing range is between 20mm and 0.7mm. The evenness of the gap can be guaranteed within the processing error of 0.015mm to ensure the filtration accuracy. Using high-density punching technology, the effective opening length is 3-5 times that of ordinary slitting pipe and 2-3 times that of ordinary punching screen.

■ Center tube unique spiral cloth hole

The center tube of the high-density punching screen adopts standard oil and casing, and the central tube adopts spiral drilling to reduce the opening area of ​​the cross section of the pipe body. On the basis of ensuring the overall flow area of ​​the pipe body, the strength of the center pipe is made. Get the maximum reservation. The formation sand is blocked outside the punching screen, and the oil, gas or water in the formation passes through the gap of the punching hole and then enters the screen through the drilling hole. Achieve the way to prevent sand.

■ Excellent corrosion resistance

The center tube adopts API standard casing or oil pipe, and the high density punching filter sleeve is made of 304 stainless steel.

For special requirements of H2S, CO2, and high Cl- wells, the center tube can be made of corrosion resistant casing or tubing. The screen tube is resistant to acid, alkali and salt corrosion.

The composite graded sand control screen adopts the unique graded sand control design, and the organic combination of surface filtration and depth filtration realizes the double precision of the single screen tube. It is a new breakthrough in the design of mechanical sand control field, and has high permeability and high strength. High resistance to deformation, high reliability and good corrosion resistance are the most effective sand control products.

Unique filter sleeve end ring design.

The grading sand control filter structure and the outer protective sleeve are welded to the end ring. The integrated structure is a filter sleeve which becomes an independent filter body. When the center tube is assembled, the number of welding of the filter structure and the center tube is minimized and reduced. The effect of welding on the overall strength of the screen.

■ Outer sleeve with bridge side flow holes (optional).

In the process of product transportation and well entering, it can well protect the graded sand control filter layer, avoiding the effect of sand control construction caused by the piercing and hanging of the sand control filter layer when going down the well.