Flison Slotted Liner Supplier

Filson: Customized Slotted Liner Supplier

Assured by more than two decades years experiences and leading-edge technology, Filson can provide customers with reliable and complete solutions of slotted liner.

  • Customized materials and slot sizes available
  • Firm structure and wear resistance for long life
  • Smooth surface with no burr due to laser-incision
  • Outstanding properties ensures stable performance

What is Slotted Liner?

Filson slotted liner can be regarded as sand control screen, mainly used as separator to catch sand in oil or gas well, and also can prevent rock particles falling into water or oil well.

Compared to well screens, Filson slotted liner is an economical and firm alternative solution for long horizontal completions and low productivity wells. It also coated with anti-corrosion layers, providing dense and reliable protection against wear and lasting service life.

Based on API standards, Filson slotted liner has uniform and evenly vertical or spiral straight-line slits. Thanks to its precision slot open, our product is featured with superior sand-proof capacity to avoid clogging, which significantly improves oil recovery quality.

Slotted Liner Types by Slot Patterns

Single Staggered Slot Liner
Single Staggered Slot Liner

Filson single staggered slot liner is a pipe equipped with well-distributed spaced slots, which different bands of slots are offset to each other. In these patterns, it not only offers uniform distribution slot area on pipe but also maintains strength capacity.

Line Slot Liner
Line Slot Liner

Featured with uniform line pattern and evenly placed slots, Filson line slot liner possesses larger filtration surface with many small line slots, hence it can filter out more sands compare to other slot patterns.

Multiple Staggered Slot Liner
Multiple Staggered Slot Liner

Although having same layout as Filson single staggered slot liner, Filson multiple staggered slot liner places two slots very closely, rather than one slot at each position. Compared to single staggered slot liner, it has better deform resistance in high thermal.

3 Products Found.

Slotted Liner Types by Slot Shapes

Straight Slot Liner
Straight Slot Liner

Filson straight slot liner is cut at a right angle, which means inside and outside of the wall have same diameter. It is usually applied in consolidated formations. Compared to keystone slot liner, it is cost-effective and has better wear resistance, but easy to clog slot.

Keystone Slot Liner
Keystone Slot Liner

Like a reversed “V”, Filson keystone slot liner has narrower liner surface and wider inside casing wall. While being cut at a small angle, it allows more particles pass through the slot freely without clogging. But it is more expensive than straight slot liner.

Bridge Slotted Screen
Bridge Slotted Screen

Filson bridge slotted screen is formed by punched high-quality metal sheet, then rolled into tube and weld. It has precision slots, excellent weld strength, mechanical strength and low blocking rate, thus widely used in water wells to filter sand.

3 Products Found.

Slotted Liner Benefits

Smooth Surface

All Filson slotted liner through strict inspection, so our product has smooth trimming with no burr, uniform and flat slit in line with API standards.

Precision Slot Open

Utilizing CNC controlled slotting machines or laser machine, Filson slotted liner has precise slot size, which is also not limited and can be designed based on customers’ design.

Reliable Quality

Endowed with outstanding character of resistance to acid, alkali and corrosion, Filson slotted liner has stable performance in working without crack.


With continuous and even slot opening, Filson slotted liner has more available open area, which controls more sands than other filtration equipment.

Advantages of Slotted Liner

By using high quality and reliable slotted liner, you will get advantages as following:

  • Durability: Filson slotted liner is featured with backwashing and wear resistance, as well as high degree materials, our product can last for longer service life.
  • Robustness: Fabricated by stainless steel, carbon steel as base materials, Filson slotted liner has good character of high rigid and intensity, which can withstand pressure up to 390 MPa.
  • Low-consumption: With robust structure and low rate of clogging, Filson slotted liner is an economical solution for wells. Besides, it also saves maintain costs.
  • Flexiblesize: Filson slotted liner can be formed to a wide range of length, slot open sizes, slot patters according to your data.
Advantages of Slotted Liner
Slotted Liner Specific Features

Slotted Liner Specific Features

In order to give customer with the best experience in operating, our slotted liner has the following features:

  • Larger surface area to ensure oil flow freely
  • High sand-blocking capacity up to 99%
  • Uniform distribution of pressure with excellent rigidity
  • Extensive range of slotting patters to satisfy different needs
  • OEM service to satisfy customized materials, dimensions
  • Special surface treatment for superior resistance to corrosive
  • Simple structure for convenient install and remove
  • Reliable performance for high mechanical strength
  • Lower maintain costs for reduce 80% oil well heavy repair
  • Proven quality in accordance with various certifications
  • Precision cuts with smooth surface and burr-free

Specifications of Slotted Liner

These are the general specifications of slotted liner. You can choose from them or send us your unique data.

  • Substrate material: stainless steel, carbon steel
  • Categories of pipe: oil pipe, petroleum casing pipe, API casing or tubing
  • Slot style: straight slot, keystone slot
  • Slot pattern: staggered, straight in line, gang, or custom
  • Length of pipe: up to 20 m or customized
  • Outside diameter of pipe: 10 mm – 600 mm
  • OD tolerance: D<50mm, +-0.5mm, D>50MM, ±1%
  • Wall thickness: up to 22 mm
  • Width of slot: 0.1 mm – 0.4 mm
  • Number of slots: customized
  • Distribution types of slots: parallel, crisscross, spiral
  • Distance of slots: customized
  • Tensile strength: 390 MPa
  • Elongation: 20%
  • Standards: ASTM A252, ASTM A53, EN10217, EN10219, BS1387, API 5L, APT 5CT
Specifications of Slotted Liner

Why Choose Filson Slotted Liner

Flison Slotted Liner Factory
Flison Slotted Liner Production

Applications of Slotted Liner

Various Wells
Various Wells

Due to its sand-proof property, Filson slotted liner normally used in oil wells, water wells, geothermal wells and brine wells to protect mined liquids from sands in the stratum. For different sand size and fluid viscosity, we provide unique dimensions for your requirements.

Petroleum Exploration
Petroleum Exploration

Filson slotted liner can also be applied in old well regeneration, new oil well, test wells, horizontal well to control sand. Our product can remarkably improve oil recovery rate while save pipe parts and reduce oil production costs to achieve maximize profits.

Steam injection
Steam injection

Except sand control, Filson slotted liner allows steam injection, which is an important method to generate heavy oil. With high-grade materials and good resistance to thermal, it can withstand high steam temperature and deliver steam to oil well.

Flison Slotted Liner Manufacturer
Filson - Your Top-rated Slotted Liner Supplier in China

You can choose a high-performance and toiled-made slotted liner with competitive price in Filson. Transportation ways including FedEx/TNT/DHL or other ways also according to your requirements.

Scroll to Top