Filson Johnson Well Screen

  • Good mechanical strength
  • High pressure and corrosion resistance
  • Less clogging possibility
  • Superior filtration performance
  • Wedge wire screen design for larger open area

Filson well screen is also known as water well screen. It is mostly used to filter water, oil or other fluids or used for well filtration applications. At the meantime, Filson provides carefully designed wedge wire screen which also called Johnson well screen for our customers all over the world.

  • Raw Material: stainless steel, carbon steel, galvanized steel, PVC, other alloys
  • Slot size: 4 – 10mm
  • Diameter: 25 – 1200mm
  • Screen thickness: 1.5-10 mm
  • End connection: beveled, flanged or thread coupled

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Filson Johnson Well Screen

Quality Johnson Well Screen for Your Application

Johnson well screen manufactured by Filson is a vital filter element used for oil wells, water wells and chemical factories. It allows fluids to pass through while leaving unwanted contaminants behind, thus realize its filtration purpose.

Filson provides a wide range of manufacturing materials for customer to choose when design Johnson well screen such as 304, 316L or 904 stainless steel, carbon steel and other alloys. The high quality materials offer the robust and stable mechanical strength to withstand the pressure from both formation and borehole.

Comparing to other well screen, Filson Johnson well screen, with unique wedge wire screen design, has a higher open area for lower head loss. And the robust construction guarantees its long term use.

Get any interests in Filson Johnson well screen? More details to be known by contacting or emailing us today. Filson is always here and ready to be your reliable manufacturer and supplier of Johnson well screen.

Johnson Well Screens: The Ultimate FAQ Guide

Before you import for Johnson well screens, read this guide.

It explores all the vital aspects you need to know about Johnson well screens such as specification, material grade, and classification, among other aspects.

So, if you want to be an expert in well screens, read this guide.

How do you Manufacture Johnson Well Screens?

Well screen

Well screen

It is often manufactured by wrappings accompanied by welding of stainless steel V-shaped profile wire.

This is normally done cylindrically around support rods making use of automatic specialized wedge wire screen machine.

However, to ensure that each profile wire and support rod is contacted, the resistance welding is done.

This makes the screen tube to have features such as firm in structure, good mechanical properties, rigidity, high strength as well as load capacity.

Furthermore, the V-shaped profile wire and the screen slot being narrow in the upper part and wider in lower part ensure that it is wear and corrosion resistance.

What are Specifications of Johnson Well Screens?

It has a slot size, which is the distance between each profile wire of Johnson Well Screen.

It is customized as per the customer’s requirement and is normally in millimeters (mm) ranging from 4mm to 10 mm.

The support rod is often triangle wire.

The alternatives can also be the round rod, flat bar, and wedge wire.

In addition, the material that is used in manufacturing Johnson Well Screen can be either carbon steel or stainless steel (304/304L/316/316L among others).

The diameter normally ranges between 25mm to 1200mm and the end connection can either be beveled, flanged or thread coupled.

What are the Advantages of using Johnson Well Screens?

Johnson Well screens provide the following advantages to you;

Well screen

 Well screen

i) The V-shaped section of the Johnson Well Screens creates a continuous slot and thus avoids blockage hence better filter function.

ii) The wire and the support rods are welded and this makes them more robust thus having longer life.

iii) It can be customized since the specifications and end connection of Johnson Well Screens can be readjusted according to customer’s requirements.

iv) It has longitudinal support rods and continuous slots which ensure that the well screens have good pressure-resistance performance.

v) It has consecutive slots with wider open area and this ensures that the speed of the contents transported in it is considerably reduced thus avoiding sand entering the screen hence increasing service time of the Johnson Well Screens.

What Features are Unique to Johnson Well Screens?

i) It is corrosive resistant

ii) It does not clog easily

iii) Has large open area

iv) Pressure inside it is considerably reduced.

v) Has better hydraulic efficiency

vi) Has high mechanical efficiency

vii) Easy to clean

What are the Specifications of Wire Wrapped Johnson Well Screens?

It is composed of either galvanized carbon steel or stainless steel types of 304, 304L, 316, 316L, 904, 904L, and J29.

It has a diameter of 168.3 mm or any other required size as per the customer’s requirements.

It also has a slot size of 0.5 mm and other sizes are also available a per the customer’s requirements.

In addition, it has a unit length of up to 6m and an open area of a minimum of 14% with end connection beveled (welded) or thread coupled.

Its surface I treated by either galvanizing, polishing, pickling and passivation among others.

Johnson well screen

Johnson well screen

What are the Different Types of Water Well Screens?

They include;

i. Bridge Slot Screen

This type of water screen has bridge openings that are aligned in rows and they are staggered therefore enhancing positive effect and strength of the screen.

Its slots are normally pressed onto a flat sheet and molded into a tube then beveled.

This results into a spiral style bridge slot creating a reasonable style and a unique structure hence giving it a compression resistance.

It can either be galvanized, use stainless steel or anti-corrosive material but can be customized as per the customer’s requirements.

Bridge slot screen

Bridge slot screen

Advantages of Bridge Slot Screen

  1. In ability of the particles to get stuck in the slot. This is achieved by the special structure of the slot hence better cleanliness capacity.
  2. It is easy to install and replace.
  3. It can be made up of different materials hence making it adaptable to different environmental conditions.
  4. It has higher strength and this is because it is resistant to twisting, compression, and tensile forces.
  5. It has various connection methods between screens thus easy to operate.

ii. Wire Wrapped Screen

Wrapped wire screen

Wrapped wire screen

This is common to Johnson Water Well Screens which are incorporated with V-shaped which forms profile wire and support rods.

The wires which are intersecting are welded thus giving it strong constriction with good mechanical property.

The section which is V-shaped also prevents blockage thus ensuring unimpeded water supply.

Moreover, it as consecutive slots having more open area.

Thus reducing the velocity of water entering hence preventing gravels from going through the screen with high pressure to ensure good filtration.

Furthermore, it is made up of either carbon, carbon with galvanized steel, or stainless steel having a diameter ranging from 89-1200mm.

It also has a length between 3m-6m having connection of either, welding, thread coupling or flange with a supply capacity of 8000m/month.

Advantages of Wire Wrapped Screen

  1. The high open area of the wire wrapped screens makes them good for making of water wells of high quality.
  2. It favors ground water infiltration and the abundance of water reduces water levels down thus lowering energy consumption.
  3. It prevents sand from entering the screen due to greater pressure and thus lowering pump abrasion.

iii. Hub and Header Laterals

This utilizes even distribution with minimal pressure concentrations and each of the header laterals is composed of screen laterals which are connected to a central header.

Header laterals

Header laterals

This allows uniform flow within a vessel with the treatment media.

Moreover, the header laterals can be used to distribute inflow or collect flow.

And this depends on its location within the vessel.

In addition, the systems can also be designed to allow side, centre, top and bottom inlet piping.

The integral backwash system can also be accommodated in any hub and header lateral to allow fast and effective cleaning.

It is made up of either galvanized low carbon or stainless steel with width up to 2.5m and length up to 6m.

Its slot size and other specifications can be customized according to customer’s specifications.

iv. Wedge Wire Screen

This is also a type of Johnson Water Well Screen with similar properties to Wire Wrapped Screen.

It is made up of either stainless steel (304, 304l, 316, 316L etc), low carbon galvanized steel.

On the other hand, it has a diameter 89-1200mm and a length of 3m and 6m.

Its slot size can be customized as per the customer’s specifications.

Wedge wire screen for well

Wedge wire screen for well

What are the Specifications of Continuous Slot Stainless Steel Johnson Well Screen Casing?

They are manufactured V-shape of wedge shape wire and the intersecting points of the wire is fusion welded.

The specifications are summarized below to give you deeper insight.

i) Wedge wire having a width ranging between 1.50mm to 4.0mm and a height ranging between 2.20mm to 7.0mm.

ii) Support rod; width between 2.30mm to 3.70mm, height between 2.70mm to 6.30mm, and round from 50mm to 6.0mm .

iii) Slot size can be customized according to customer’s specification.

iv) Material composed of stainless steel.

v) Length can be up to about 6 meters or 5.8 meters which is fit for container.

vi) Diameter ranging between25mm to 1200mm.

How do you Test Quality of Johnson Well Screen?

i) The dimensions of the Johnson well screen can be checked by a quality inspector from your supplier and this may be checked by third party inspectors or by any person availed by the buyer.

ii) The thickness of the wall casing material can be checked by inspection method done by ultrasonic. It can as well be confirmed by flaw detection through ultrasonic.

iii) The collapse test can be done through destructive and collapse strength test is done before transported.

iv) The casing of the Johnson well screen can also be treated by pickling accompanied by passivation.

v) The production process of the product can be inspected any Inspection Company which acts as a third party and any person chosen by the buyer.

vi) The Johnson well screens can as well be placed to allow for inspection before shipment.

When should you Replace Johnson Well Screen?

Johnson Well Screen is replaced when the one in use is severely damaged in the existing well.

Therefore, a smaller diameter screen which is known as a liner is installed inside the original well can be used as a solution.

Are there Quality Standard Specifications for Johnson Well Screens?

Yes.

They include; API 5CT, ASTM A312, API 5L.

How do you Package Johnson Well Screens?

Johnson Well screens are packaged in single with bubble bags then finally in a wooden case.

In addition to that, each case is clearly marked with batch number, date of manufacture, safe heating, and application temperature.

How can you distinguish a Deep Well Water Filter Pipe Johnson Type Wire Point Screen Pipe?

This is often used in water purification having an open area of up to 60% with a slot size of 0.2mm- 15mm.

On the other hand, it has a diameter ranging between 25mm-1500mm with a length of 6 meters.

It is also made up of profile wire that is V-shaped and support rods which are running longitudinally and the intersecting ends welded.

Furthermore, its continuous slot has more open end.

This reduces the speed of water coming under great pressure so that filtration can be done better by the water well screen pipe.

However, the slot can be customized depending on the conditions of the earth.

What are the Specification of Wire Point Pipe?

It is also known as Johnson Pipe used in water purification and made up of either the stainless steel (304,304L, 316,316L) carbon steel, low carbon steel, or low carbon galvanized steel.

However, the slot size ranges between 0.2mm-15mm and a diameter of 25mm -1500mm. in addition; other specifications are summarized below.

i) Size in inches ranging 4inch to 10 inch

ii) Outside diameter 117mm to 273.1mm

iii) Slot size which can be customized as per the customer’s specifications.

iv) Length of up to 3 meters

v) Collapse strength 395PSI to 167PSI

vi) Wrap (thickness by deepness) be customized as per the customer’s specifications.

vii) RODS from 3.8mm/22 to 3.8mm/50

What is a Wire Wrapped Screen?

This is a relatively short length of pipe having holes or slots in its sides with a specially shaped wire wrapped around it.

The wire is designed to decrease the chances of the sand plugging the screen, self cleaning and reducing flow of friction.

Advantages of wire wrapped screen

i) Offers accurate slot opening.

ii) Has ability to rotate during installation.

iii) Offers high strength and corrosion resistant.

What are the Features of Vee Type Johnson Slotted Wire Screen Tube?

They include;

i) They have non-clogging surface.

ii) Has large open area

iii) Has low pressure drop.

iv) Has high hydraulic efficiency

v) Has high low rate

vi) Has high mechanical efficiency

vii) Has good abrasion resistance

viii) Easy to clean

When should you use 0.5mm Slot Stainless Steel Johnson Type Water Well Screens?

i) When one requires an uninterrupted flow since the V-shape profile prevents clogging.

ii) When one requires water well screen with uniform and efficient flow since it has continuous slot opening.

iii) When you require water well screen with features such as backwashing, safety and reliability when in use since it has ladder-like wire welded screens.

How do Control Quality of Stainless Steel Johnson Type Water Well Screens?

Quality control is achieved through the following;

i) The dimensions of the Johnson well screen can be checked by a quality inspector from your supplier and this may be checked by third party inspectors or by any person availed by the buyer.

ii) The thickness of the wall casing material can be checked by inspection method done by ultrasonic which can as well be confirmed by flaw detection through ultrasonic.

iii) The collapse test can be done through destructive and collapse strength test is done before transported.

iv) The casing of the well screen can also be treated by pickling accompanied by passivation.

v) The production process of the product can be inspected any Inspection Company which acts as a third party and any person chosen by the buyer.

vi) The water well screens can as well be placed to allow for inspection before shipment.

What are the Specific Applications of Stainless Steel Johnson Type Water Well Screens for Water Well Drilling Forages?

They are used in;

i) Variety of screens having different specifications applied in wells that are motor-pumped as well as geothermal wells.

ii) Johnson type screens or water well screens are in used by food processors in industries because they are heat resistant and anti-corrosive thus making it easily approved by FDA.

iii) Malting industries often find panel screens that are flat to be providing good mixing malt is on turning phase, as well as good ventilation during the kilning phase.

iv) In the wood yard, pulp and paper need the screens paper machines as well as during recycling, dewatering, removal of debris, fractionalization of fiber, drying, and purification of water.

v) Industries dealing with minerals, refineries, treatment of water and water require Johnson type screens/water well screens.

What is a Wedge Wire Screen?

Wedge wire screens/wires wrapped with screen is often made up of the stainless steel wedge wire and it owes its uniqueness because it is chemical and corrosion resistant.

The wedge wire screen is incorporated with support profiles which are welded together onto the surface profiles making the screen to offer high flow rate.

What are the Advantages of Wedge Wire Screen?

i) It maximizes the flow rate when compared to screens of equal length, diameter, and slot size.

ii) It has non-clogging slot because they have continuous slots with V-shape openings which are narrow at the outer surface and widens inwards. This therefore, prevents particles which are large in size from entering the screen.

iii) It has an adjustable gap allowing different users with different filtration equipments and media to sue it and thus minimizing the cost.

iv) It is corrosion resistant and therefore reducing wear and tear of the screens.

How do you Specify Wedge Wire Screens?

The specifications of Wedge Wire Screens are done by considering the following;

Wedge wire filter screen for wells

Wedge wire filter screen for wells

i) Wedge wire should have a width between 1.5mm to 3.7mm and a height between 2.2mm to 7.0mm.

ii) Support rod width 2.3mm to 3.7mm and a height between 2.7mm to 6.3m.

iii) Slot size ranging between 0.1mm to 6.0mm and this can be customized according to the customer’s requirements.

iv) Material can be either galvanized low carbon or stainless steel (304/304L, 316/316L among others)

v) Length ranging up to 6 meters.

vi) Diameter ranging between 25mm to 1200mm.

vii) Its end connections can either be beveled, flanged or thread coupled.

How do you Specify Sand Control Stainless Steel Johnson V Wire Wedge Wire Screen Pipe for Water Well Drilling?

This is specified by considering the following areas;

i) It has a slot size (mm) ranging between 0.1mm to 3mm.

ii) Have an open area of up to 60%.

iii) The material can either be carbon, low carbon with galvanized steel steel with anti-corrosion coating, or stainless steel.

iv) Have a unit Length ranging to 6 meters.

v) Have a diameter between 25mm to 1500mm

vi) Its end connection can either welded or threaded coupled or flanged.

What is a SS Continuous Slot Wire Wrapped Johnson Water Well Screen?

This a Stainless Steel Continuous Slot Wire Wrapped Johnson Water Well Screens that is composed of stainless steel (304,304L, 316,316L etc.).

Its main feature is that it is corrosive resistant with end connection either welded, thread coupled or flanged.

What is a Welded Stainless Steel Continuous Slot Wire Wrapped Water Well Screens?

This is often made of stainless steel (304,304L, 316,316L etc.) making it corrosive resistant and its end connection if beveled (beveled).

Where can you use SS Continuous Slot Wire Wrapped Johnson Water Well Screen?

It is used in;

  • Water/ oil filter
  • Oil wells
  • Water wells
  • Chemical factories

What is a Johnson Screen Wedge Wire Screen Tubes?

These are produced by a V-shaped wire or wedge shaped wire surrounded internally by support rods.

The wedge shaped profile wraps onto the full length of the screen thus resulting to a continuous slot opening for free flow of water or oil.

Therefore, during the flow, majority of the gravel and sand are kept out of the well.

What are the Features of Johnson Screen Wedge Wire Screen Tubes?

They include;

  1. Material is composed of either carbon steel that is galvanized, or stainless steel.
  2. It has a diameter of either 168.3mm or other required size as per the customer’s specification.
  3. It has a slot Size of 0.5mm and can be customized as per customers’ requirement.
  4. Have unit length up to 6m
  5. Have an open area of 14% minimum.
  6. End Connection can either be welded, thread coupled or flanged.
  7. The surface can be treated by either galvanizing, painting, polishing, pickling and passivation etc.

What are the Applications of Johnson Screen Filter Screen Tube?

They are used in;

  • Water/ oil filter
  • Oil wells
  • Water wells
  • Chemical factories

Inserting screens in a well

Inserting screens in a well

What are the Advantages of Johnson Screen Wedge Wire Strainer?

i) Has good construction strength.

ii) It has a longer service life.

iii) It is non-clogging

iv) Has a large filtration area

v) Its connections and specifications can be customized according to customer’s specifications.

Are there Specific Applications for Johnson Screen Wedge Wire Strainer?

Yes. It is used in the following areas;

  • Water cleaning
  • Pond cleaning
  • Spary fitting

What are the Characteristics of the 304v Fine Wire Johnson Screen Pipe?

1) It is made up of welded stainless steel water well screen composed of rods and wrap.

2) These rodsmay be round wire, triangular or trapezoid wire.

3) The warp used in making it is triangular wire (V-shaped wire).

4) They have a structure and high open area, with accurate slot dimension.

5) Moreover, it is heat resistant, corrosion free, lasts longer, safe and reliable.

Therefore, can be used in many areas of medium filtering.

Johnson well screen

Johnson well screen

What is SS Johnson Screen Pipe for Pulp Filter?

This is produced by V-shaped wire or wedge shaped wire that wraps onto the support rod creating a continuous slot opening thus allowing water or oil to enter into your well freely and at the same time keeping sand and gravel out of the well

Are there Disadvantages of Johnson Well Screens?

Yes. If not properly maintained it can be costly.

That’s it – I hope you got answers to questions you have been asking about Johnson well screen.

For custom inquiries or questions about Johnson well screens, contact FilSon Filters team now.

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