THE BUYER'S GUIDE / SELECTION
Choosing Well Screens: Application Fit and Specification Checks
A buyer-focused guide to selecting wedge wire well screens from Muto Wire Screen Co., Ltd. It covers the applications, the sizes, slot sizes, lengths, collapse strength, tensile weight, wrap wire and support rod data, plus end connection and material options, and it lists the points to confirm before ordering.
Application fit: oil and gas production (onshore and offshore), water injection wells or artesian wells, as published
Outside diameter and size: 4-1/2 (114.3 mm), 6-5/8 (168.3 mm), 8-5/8 (219.1 mm) or 10-3/4 (273.1 mm)
Slot size: published options of 0.75 mm or 1.0 mm, chosen from the buyer's own sand control analysis
Length: 2.9 m for 4-1/2, 5.8 m for the other listed sizes
Collapse strength (minimum, from >28 to >100 bar) and tensile weight (11.5 to 48 ton), compared with design loads
Wrap wire (W x H) and support rod configuration, which changes the strength rating within a size
End connection: welding (beveled end), thread coupling (STC, LTC, BTC), flange, etc.
Material: stainless steel or carbon steel, with the grade confirmed in the inquiry
Choosing Well Screens: Application Fit and Specification Checks
Buying well screens starts with your own well conditions, not with a catalog. Before you compare models, write down the outside diameter you need, the slot opening your sand control design calls for, the collapse and tensile loads your engineering team expects, and how the screen will join the rest of the string. This guide shows how those requirements line up with the specifications Muto Wire Screen Co., Ltd. has published for its wedge wire well screens.
What the product is
According to the published product description, the wedge wire well screen is a mechanical separation device used in oil, gas or water extraction. It filters sand and other particulates out of produced fluids. The screen is made of V-shaped wires welded together into a slotted screen with precise openings. The description says these screens are typically made from high-strength materials such as stainless steel or carbon steel so they can handle harsh downhole conditions.
Step 1: Confirm the application fits
The published applications are:
- Oil and gas production. Onshore and offshore drilling, used to manage sand production and protect downhole equipment.
- Water injection wells. Used to keep injected water clean, prevent clogging and maintain well integrity.
- Artesian wells. Used to keep sand out of well components.
If your project falls outside these uses, talk to the supplier before treating these well screens as a fit. This guide doesn't cover any other application.
Step 2: Compare published sizes and strength data
The published specification table lists these configurations:
| Size | O.D. (mm) | Slot size (mm) | Length (m) | Collapse strength (bar) | Tensile weight (ton) | Wrap wire W x H (mm) | Support rods |
|---|---|---|---|---|---|---|---|
| 4-1/2 | 114.3 | 1.0 | 2.9 | >28 | 11.5 | 2.3 x 3.5 | Φ3.8 mm x 22 |
| 6-5/8 | 168.3 | 0.75 | 5.8 | >40 | 12.8 | 2.3 x 3.5 | Φ3.8 mm x 22 |
| 6-5/8 | 168.3 | 1.0 | 5.8 | >33 | 12.8 | 2.3 x 3.5 | Φ3.8 mm x 22 |
| 8-5/8 | 219.1 | 1.0 | 5.8 | >34 | 21.9 | 2.3 x 3.5 | Φ3.8 mm x 48 |
| 8-5/8 | 219.1 | 1.0 | 5.8 | >50 | 38.2 | 3.0 x 5.0 | Φ4.0 mm x 48 |
| 10-3/4 | 273.1 | 0.75 | 5.8 | >50 | 32.9 | 2.3 x 3.5 | Φ4.9 mm x 55 |
| 10-3/4 | 273.1 | 1.0 | 5.8 | >60 | 39.5 | 3.0 x 3.5 | Φ4.9 mm x 55 |
| 10-3/4 | 273.1 | 1.0 | 5.8 | >100 | 48 | 3.2 x 6.0 | Φ5.0 mm x 55 |
Ways to read the table:
- Within one size, strength depends on the build. The 8-5/8 and 10-3/4 sizes each come in more than one wrap wire and support rod setup, and each setup has its own collapse strength and tensile weight. For example, at 8-5/8 with a 1.0 mm slot, the 2.3 x 3.5 mm wrap wire version is listed at >34 bar and 21.9 ton. The 3.0 x 5.0 mm wrap wire version is listed at >50 bar and 38.2 ton.
- Published slot sizes are 0.75 mm and 1.0 mm. Pick the slot from your own formation and sand control analysis. If you need a different opening, ask the supplier directly. This guide doesn't assume other slot sizes are available.
- Length. The 4-1/2 size is listed at 2.9 m. All other listed sizes are 5.8 m.
- Collapse strength figures are minimums. They appear as "greater than" values. Compare them with the loads your engineers have calculated for the well.
Step 3: Choose the end connection
The listed end connections include welding (beveled end), thread coupling (STC, LTC, BTC) and flange, among others. Make sure the connection matches the casing or pipe string already planned for the well.
Step 4: Specify the material
The product description names stainless steel and carbon steel as typical materials. If you're looking for stainless steel well screens, put the material grade in your inquiry. This guide doesn't state specific grades, corrosion performance or service life, because the confirmed material doesn't cover them.
When this guide does not apply
- Your required O.D., slot size or length isn't in the published table and you haven't confirmed it with the supplier.
- Your design loads are higher than the listed collapse strength or tensile weight.
- You need gravel pack design, price, lead time, certification or test documents. None of these are covered by the confirmed material, so request them directly.
Next step
Send your well type, required O.D., slot size, length, load requirements, end connection and material to Muto Wire Screen Co., Ltd. through www.mutoscreen.com. Confirm all specifications and purchasing terms with the company before you order.
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