Slotted Liners/Tubes

The slotted stainless steel tube /liner is used in oil exploration for preventing sand. It can stop 99% sand, decrease 80% of oil well heavy repair and increase the oil well's strength, integrality and stability of keeping off sand. With a simple slotted welded pipe structure, it is very effective. It has small cuts of 0.10-0.5 mm in the tube wall.

The slotted pipe works by allowing certain particle size coming through the surface with crude oil while keeping the bigger size sand staying outside, and thereby the anti-sand purpose is achieved.

Line slot pattern, staggered slot pattern, multiple staggered slot pattern.

    Slotted liner or pipe has several unique advantages when compared with using of perforated pipes.

    Detail Features:
  The slotted liner is a robust and cost-effective solution for long completions or low productivity wells.

We offer straight and key stone slot in a wide range of slotting patters to satisfy the required open area.

High rigidity resisting scrape and abrasion, high intensity, anti-corrosion and even distribution.

Main technical data:
  Material: stainless steel, carbon steel
  Categories of pipes: petroleum casing pipe, oil pipe
  Length of pipe (single): ≤15m
  Outside diameter of pipe: 50 to 200mm
  Wall thickness ≤16mm
  Width of slot: (0.10-0.40)mm±0.03mm
  Number of slots: according to order
  Distribution types of slots: parallel, crisscross, spiral
  Distance of slots: according to order

Technical Details:

Slotted liner patterns illustration:  

Three slot patterns are designed for different characteristics (shown below). Compared to staggered and straight slot patterns, gang slot pattern has superiorities over installation torque-loading capacity and substantially improves the liner’s resistance to lateral bucking and collapse pressures.


We also supply Perforated Casing Tube, Welcome to contact us.