Published on: Mar 21,
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In oil and gas drilling operations, the shale shaker acts as the first line of defense in solids control. Its performance directly impacts how clean the drilling fluid stays. One of the most critical factors behind that performance? Choosing the right shaker screen size. But “size” doesn’t just mean the screen’s length and width. It also includes mesh count, API designation, and D100 cut point. These technical specs affect how well the screen separates solids from fluid.
To select the ideal screen for your oil or gas drilling rig, you’ll need to factor in well conditions, mud properties, cutting size, and the shaker’s design. Properly matching screens to each drilling phase results in better separation, lower costs, and smoother operations overall.
When you first hear about shaker screens, your instinct might be to ask, “How fine is the mesh?” or “What’s the size?” But if you only focus on one number, you might end up choosing the wrong screen for the job. To pick the right one, you need to look at three key dimensions: Mesh count, API designation, and Physical dimensions.
If you’ve worked with shakers before, “mesh count” is probably the first thing that comes to mind. When someone says an “80 mesh” screen, they’re talking about a screen woven with 80 wires per inch. The higher the mesh number, the smaller the openings—and the finer the particles it can filter. But there’s a trade-off: finer mesh can slow down the flow rate and reduce fluid handling capacity.
Conversely, screens with lower mesh counts let more mud through and offer faster flow, but they miss finer solids. It’s a balancing act.
Another thing to remember: not all “80 mesh” screens are made the same. Wire thickness and weave pattern vary between manufacturers. So even if two screens have the same mesh number, their actual separation performance might differ. That’s why the oilfield has widely adopted the API Screen Number system—to create a more reliable standard.
Unlike mesh count, the API number reflects actual tested performance, especially the D100 cut point—the particle size at which the screen removes 100% of solids in lab testing. If you only rely on mesh count, your screen might not perform as expected. But when you use the API rating, you get a better idea of the screen’s real-world performance.
You’ve probably seen tags that read “API 100” or “API 120.” These aren’t just marketing terms—they follow the API RP 13C standard. Each API number represents a range of particle sizes the screen is capable of removing, based on lab testing.
For example, an API 100 screen captures solids between 137.5 to 165 microns. If you’re drilling in fine formations and need to trap smaller cuttings, you might go with an API 140 or API 200 screen.
Even if two screens are labeled “80 mesh” or “120 mesh,” as long as they share the same API rating, you can count on similar cut-point performance in the field.
Here’s a quick reference chart of common API designations and their D100 ranges:
API Number D100 Range (μm) API 20 780.0 – 925.0 API 25 655.0 – 780.0 API 30 550.0 – 655.0 API 35 462.5 – 550.0 API 40 390.0 – 462.5 API 45 327.5 – 390.0 API 50 275.0 – 327.5 API 60 231.0 – 275.0 API 70 196.0 – 231.0 API 80 165.0 – 196.0 API 100 137.5 – 165.0 API 120 116.5 – 137.5 API 140 98.0 – 116.5 API 170 82.5 – 98.0 API 200 69.0 – 82.5 API 230 58.0 – 69.0 API 270 49.0 – 58.0 API 325 41.5 – 49.0 API 400 35.0 – 41.5Note: API numbers are not direct conversions from mesh count. They’re based on test data. So while two “Mesh 80” screens may perform differently, two “API 80” screens should give similar cut-point results—regardless of who made them.
Beyond API rating, the physical dimensions of the shaker screen are just as critical. If you’ve worked with different shaker brands, you know the screens aren’t one-size-fits-all. You might come across sizes like 585× mm for a Mongoose screen or 695× mm for a Derrick FLC500.
These dimensions determine whether the screen fits properly on a specific shaker model. They also affect the screen’s frame tensioning method and whether it’s flat or wave-shaped. Even the best-rated screen won’t work if it doesn’t physically fit.
That’s why, before buying or replacing screens, always double-check the shaker model. Better yet, provide the exact length, width, and thickness to your supplier to avoid any compatibility issues.
Here’s a quick look at some popular shaker models and their screen dimensions:
Shaker Brand / Model Typical Screen Size (mm) Notes MI-Swaco Mongoose 585 × Composite frame ~11.5 kg; Steel frame ~13.5 kg Derrick FLC500 695 × Available in flat (PWP) or pyramid (PMD) design NOV Brandt Cobra 635 × Both composite and steel frames available VSM300 (Scalping Deck) 685 × 940 Different decks use different sizes (Primary / Secondary)Tricks:
When selecting shaker screens for a drilling project, finer isn’t always better, and one-size-fits-all doesn’t work either.
Start with the well. Deeper wells often produce finer cuttings and demand higher fluid clarity. In those cases, you’ll likely need finer screens, like API 140 or API 200, to capture small solids. But for shallow sections—especially when drilling through soft formations with large cuttings—you’ll want coarser screens like API 60 or API 80. These allow more fluid to pass through and handle higher flow rates, even if they’re less precise.
Mud properties also matter. High-density, high-viscosity muds tend to clog finer mesh quickly. That slows down processing and cuts efficiency. On the other hand, if your drilling fluid is thin, clean, and flows well, you can go for finer mesh to improve solids control. As the well goes deeper, your screens usually need to get finer. One screen type won’t work from top to bottom.
Even if you’ve picked the right API number, it’s not enough. You need to confirm whether the screen physically fits your shaker. For example, the MI-Swaco Mongoose shaker uses screens sized 585 × mm, while the Derrick FLC500 needs 695 × mm screens. If the size is off—even by a bit—the screen won’t fit or seal properly. That means lost time and money.
Also, different brands use different mounting systems. Some screens have hook strips, while others use composite frames with locking tabs. If you’re unsure, it’s best to tell your supplier exactly which shaker model you’re using. Better yet, send them a sample screen or a detailed size drawing. It’ll save a lot of back-and-forth.
As mentioned earlier, the API screen number is now the most reliable industry standard for gauging screen performance. But if you tell your supplier, “I need a 100 mesh screen,” don’t be surprised if they ask: “Do you mean Mesh 100 or API 100?” Because they’re not the same.
Here’s a simple example:
An API 120 screen has a D100 cut point between 116.5 to 137.5 microns. That means it can reliably remove medium-fine solids—perfect for mid-to-late stages of drilling when cuttings get smaller.
If you’re unfamiliar with API ratings, you can work backward from the D100 cut size. This tells you what particle size you want to capture, which is especially helpful when drilling through tough zones like shale or clay-rich formations.
A common myth on site is that finer mesh means better quality. This is not true. In high-viscosity or high-solids sections, a fine screen—like API 200—might clog fast, tear easily, and need frequent replacement. That’s wasteful, not efficient.
At the same time, going too coarse to save money can cost you more. If you use a loose mesh on high-value drilling mud, it’ll let fine cuttings pass through. That means your desanders and centrifuges have to work harder—and those are expensive systems to run.
The best approach is to treat shaker screens as part of a flexible strategy. When solids are heavy, start with coarser screens like API 60–80 and switch to finer ones like API 140 or 200 as the well deepens and formations tighten. This way, you reduce downtime, extend screen life, and maintain high separation efficiency without blowing your solids control budget.
Each shaker series has strict requirements for screen length, width, edge design, and mounting style. A screen might have the right mesh and material, but if the size doesn’t fit—it simply won’t work.
To make sourcing easier, we’ve put together a comparison chart listing screen sizes for the world’s leading shaker brands. Whether you’re running MI-Swaco, Derrick, NOV Brandt, Elgin, FSI, or Vortex, you’ll find the corresponding screen specs right here. This saves time and helps avoid mismatches.
(And yes—SMKST offers high-quality replacement screens that match all the specs below. More affordable, made in China. Click here to contact our team.)
MI-Swaco is one of the most widely used brands on-site. Its composite frame offers a larger effective screen area, lighter weight, and corrosion resistance—ideal for tough drilling conditions.
Model Dimensions (mm) Frame Type Compatible Equipment Weight (kg) Mongoose 585 × Composite / Steel Frame Mongoose Shaker / Cleaner Composite ~11.5 kgSteel ~13.5 kg
MD Series 622 × 655 Composite Frame MD-2 / MD-3 Shale Shaker ~7 kg ALS Series × Hook Strip (Flat) ALS 4×4 Shale Shaker ~7 kgDerrick’s pyramid screens increase effective area through a three-dimensional design—ideal for high-precision applications.
Model Dimensions (mm) Screen Type Compatible Equipment FLC500 Series 695 × Flat (PWP) / Pyramid (PMD) Flow Line Cleaner 500 (3 or 4-panel) FLC Series 697 × Flat (PWP) / Pyramid (PMD) Flow Line Cleaner (3 or 4-panel) Hyperpool 570 × Pyramid (PMD) Hyperpool Series Shakers / Cleaners Dual Pool 600 710 × 626 Pyramid (PMD) Dual Pool Series Shakers / CleanersThe VSM300 features a unique 3-deck layout (scalping / primary / fine), requiring different screen sizes for each layer.
Model Dimensions (mm) Frame Type Compatible Equipment Cobra / Venom 635 × Composite / Steel Frame Cobra, King Cobra, Mini Cobra, Venom, LCM-2D, LCM-3D VSM300 (Scalping) 685 × 940 Composite / Metal Frame VSM300 Shaker – Scalping Deck VSM300 (Primary) 685 × 890 Composite / Metal Frame VSM300 Shaker – Primary Deck VSM300 (Secondary) 685 × 203 Composite / Metal Frame VSM300 Shaker – Secondary (Fine Screening) DeckA practical and economical option, often used on land rigs. Also suitable for high-performance desanding systems.
Model Dimensions (mm) Frame Type Compatible Equipment Fluids System 29×42 737 × Composite Frame FSI Shakers / Cleaner SeriesKnown for its steel frame design, this screen suits cost-sensitive jobs. Composite versions are available on request.
Model Dimensions (mm) Frame Type Compatible Equipment Vortex Screen 610 × Steel Frame Vortex Shaker SeriesPopular in North America and the Middle East. Built tough and designed for quick change-outs.
Are you interested in learning more about Swaco Mongoose Pyramid Screen? Contact us today to secure an expert consultation!
Model Dimensions (mm) Frame Type Compatible Equipment KPT 28 715 × Steel / Composite Frame Elgin / Kemtron KPT 28 SeriesYou can just tell us the following information:
No problem—just send us a photo of the screen or a used sample, and we’ll match the right replacement for you fast.
When we talk about “shale shaker screen size,” it’s not just about mesh count or physical dimensions. It’s a multi-factor decision—combining shaker type, screen design, API standards, and real-world good conditions.
By understanding how screens work, choosing them, installing and maintaining them, and staying up-to-date with the latest trends, you can boost your solids control efficiency, extend screen life, and cut overall drilling costs.
From a practical standpoint, we always recommend that technical teams and procurement work closely with screen suppliers or equipment manufacturers. Share key info like the API number, expected cut point, and mud properties. That way, you get the best-fit screen configuration—faster, smarter, and more cost-effective.
Speaking about the most essential pieces of drilling equipment, the shale shaker is tentatively the most important. Shale shaker separates drilling liquid such as mud from solids (also known as cuttings). Shale shaker screens are the most important components of a shale shaker as they help in separating liquids from solids by utilizing drilling fluid efficiently.
It is a mesh screen made out of woven metal which is inserted in the shale shaker. When solids or cuttings are generated from drilling equipment, they are covered in drilling liquid. These cuttings are jolted over shale shaker screens and all the solid particles are captured. Replacement shaker screens are suitable for fitting to different types of shale shakers.
Shaker Screen comprises of the following parts –
Screen Frame – The main screen is supported on a frame just like a canvas. It is made up of different materials such as flat steel sheets, square steel tubing, plastic style composites, etc. The outer perimeter of the frame is divided into small separate inner panels. These smaller panels can be of square, hexagonal, rectangular, and triangular shapes. They provide maximum rigidity and support for the mesh attached to them. The idea is to minimize the area for panels to increase the screen surface available for work.
Screen Mesh – A metal wire is woven to create a very thin, yet strong metal cloth called screen mesh. To increase the conductance of the screen mesh, the metal cloth is woven with rectangular openings which facilitate in minimizing the amount of material in the way. The screen is built with multiple screen mesh to maximize screen life. These multiple layers trap even the finest number of particles and keep the screen surface available for use for a long time.
Binding Agent – Binding agent is the substance used to bind the mesh to the screen frame. It provides maximum adhesion to both mesh and the screen frame. This binding agent is highly characteristic and can handle strong vibrations, corrosive drilling fluids, abrasive cuttings, and high heat.
Various types of shaker screens used in shale shakers –
Flat Screen –Flat screen is commonly used in the Derrick Shaker Screen. It is cost-effective and traditional. Its screen panel is made up of two or three layers of stainless-steel screen bonded to a steel support plate.
Pyramid Screen – Pyramid screen is also used in the Derrick shaker screen. It costs higher and is made up of new screening technology that can increase the handling capacity of fluids and screening performance. It also has more screen area as compared to a flat-screen.
Metal Framed Screen – These are metal framed and are widely used across the industry. These screens enable the operators to switch motion on the fly as drilling conditions change. These screens are highly efficient in separating solids from drilling equipment.
Composite Screens – Composite screen is made with composite material with steel reinforcement. They have much higher quality, performance, storage life, delamination resistance, and improved handling.
Hook Strip Screens – Hook strip screens are constructed with two or three stainless steel layers bonded to a steel support plank. Accessory rubber plugs are inserted to the rips of the screen to cut down production costs.
The benefits of using shale shaker replacement screens are –
Increased Shaker Capability – Some shaker screens help in increasing the total amount of usable API non-blanked screen area. This helps in significantly increasing the usable screen area which results in an improved fluid handling capacity as well.
Fine Separations – Shaker screens provide enhanced permeability, gravity, and vibration which allow more fluid to pass through the top of the screen. Shaker screens have the capability of making separations as fine as 40 microns.
Replaceable – Shaker screens are replaceable and can fit almost all types of shakers for the efficient use of existing equipment. There is no need to modify or replace the existing shaker which ultimately saves a whole lot of money.
Drier Cuttings – Shaker screens minimize fluid loss by spreading thinner layers of fluid over an increased screen area which results in faster drying. This enables shakers to screen 1 to 2 API sized particles which ultimately increases efficiency and time.
If you are seeking replacement shaker screens for your drilling equipment, then consider EV Oilfield Services’ quality made shaker screens. Our screens are made by international and the U.S. Patented technology for superior quality, durability, and long life. These screens come in a wide range of mesh designs and customizable screen options that fit any application to provide remarkable separation for solid and liquid materials. We can provide perfect shale shaker replacement screens at an extremely affordable price.
There are many different kinds of shale shakers for drilling mud process. According to different vibration mode, applications, etc. we have below information of shaker types
There are linear motion shakers, elliptical motion shakers, balanced elliptical motion shakers, and dual motion shale shakers. At present, linear motion shaker is still popular with most users. Compared to other modes of shakers, it supplies a higher treating capacity
However, operating the linear motion shaker faces the problem of screen block and the horseshoe effect. Since the cuttings or the harmful solids are irregular shapes with a sharp edge, many particles will stick into the screen surface hole. And then, a more and more similar problem occurs. Finally, there will be a large jam area in total.
Furthermore, since the block on the screen cloth and the drilling mud property, there may be drilling fluids jam on the screen surface. This will lead to mud lost, decrease filtration efficiency and lead the cost increase.
What about the elliptical motion shaker? In the early dates, elliptical shakers are not balance. So, we also call it an irregular circular motion shaker. The features of such shakers include lower cost, lower capacity but slightly better filtration results. Since the material move in a circle track avoids blocking on screen. Under gravity force and drilling fluids pressure, solids will move away from screen holes easier than under linear motion.
Regards to balanced elliptical motion shaker, yes, it’s a combination of linear and elliptical motion shaker. Because, balanced elliptical motion shaker can get rid of screen blocking or jam and the horseshoe issue, in the meantime, it can handle larger capacity material than an elliptical motion shaker.
The latest generation of shaker is the dual motion shaker. It’s not only the combination of linear and elliptical vibration mode. But, it’s an integrative solution for various of working condition. It can be switched between linear motion and balanced elliptical motion very easily. So we can operate it properly under different working conditions. Such as large quantity drilling fluids to process or filter extra fine solids out of drilling mud.
To achieve different vibration mode of shakers, we need to adjust the motors configuration. Such as vibration strength same or not, one or two or three sets of vibration motor or just motor.
Besides the vibration mode, there are other difference among shakers. Such as screen panels. Panels difference including the tensioning way or clamping system, the screen surface, and screen frame material. For tensioning way, there are hook strap one, wedge blocked one and compressed by air pressure or pneumatic system.
The different tensioning way defines different features and if it’s convenient or not on installing screens. If by wedge block, it requests hammers knock wedges gently on both side. If we need to uninstall all of the panels, we need to knock all the wedges one by one. After putting screens on shaker bed, we knock wedges into position well one by one
If screens are tensioned by pneumatic system, we just need to release the pressure and take out the panels one by one or just take out of the panel need to be replaced
When we don’t consider screen difference according to shaker design, we can find other difference on screen panels, too. Such as screen surface, flat or corrugated. The frame material is composite frame or metal frame.
For oil and gas drilling mud process and related applications, we know there are many famous brands. Such as Derrick, M-I SWACO, NOV Brandt, etc. And classical typical shakers from above is FLC series Mongoose series, Cobra series.
FLC series shaker including FLC500 and FLC series, but now, typical one of Derrick is DP600 and Hyperpool series. If we asked users who had used Derrick FLC shakers and NOV, Swaco Shaker, they would tell Derrick is always the number one to them. But what is the difference among them? Derrick shakers fit with their own innovated motors-Super G and Super 2G and the filtration efficiency/performance are very good.
NOV Brandt Cobra series shaker hold a bit larger screen area than FLC series. We use wedge blocks press the screens, that is more convenient and easy. Furthermore, there is less spare part cost than Derrick ones
Mongoose series shaker is classic typical equipment of M-I SWACO. The screen panels are composite frame and tensioned by wedge blocks. At the earlier stage, it’s the dual motion shaker with 3 motors and finally, shakers are 2-vibration motor dual motion shaker. And now, there is the vacuum system to help solve mud loss problem when fluids arrives on the panel of discharge end.
Selecting any of above famous brand shakers should be based on your actual working condition and your budget. You also can seek some used equipment or equivalent equipment. Let us know your question or interest if any. You will get the opmital solution under our proposal
If you are looking for more details, kindly visit Scomi Prima 3G/4G/5G Screen.