Shale shaker is the kernel device in any solids removal program. Screens as the most cost spare part of shale shaker are very concerned by engineers. For maximum efficiency, the solids on the screen surface must travel in a predetermined pattern "spiral, elliptical, orbital or linear
motion" in order to increase particle
separation efficiency and
reduce blockage of the screen
openings. So both screen cloth and frame must be reliable to fit different solids in various drilling circumstances. Generally, the materials of screen cloth is stainless steel and polyurethane. There mainly has two materials component screen frame: steel, composite frame.
We, Aipu solids control has 15 years experience manufacturing shale shaker screen. Our Screen has been tested under API RP13C. We are only China screen manufacturer got API RP13C compliance report. Trust the accurate cut point will lead better performance and longer service life of screen.
Our engineers and design professionals can help supply shale shaker screen with a variety of mesh ranges for certain application during whole well drilling process. Aipu featured new products include replacement composite screen for Mongoose shaker for Cobra series screen, etc. The layers of stainless steel wire mesh are well arranged to achieve optimum filtration efficiency and conductance.
Because it's related to your money. You choose the wrong screen, cost high and lower efficiency of drilling rig. You choose right one, you get high efficiency of solids control results and pays less money. There is an balance between cost and efficiency.
When selecting a screen, end users should pay special attention to the screen design and the size of the opening.
Available on flat and pyramid screen panel. Each shaker is usually fit with 3 or 4 panel screen. Screen panels can be fixed steadily by tensioning bolts and draw bar. Easy to operate and install. Furthermore, the Hunter-D screen is interchangeable with 48x30 screen.
The screens are completely interchangeable with original Mongoose screen as well. Our clients are rather happy with our screen quality and the shaker performance. On shaker, prior to delivery we’ll install composite screens on shaker as standard configuration.
FLC 2000 (48x30), DP 600, FLC 500, HYP, U - screeens could be provided.
NOV's screens like VSM300, Cobra and King Cobra LCM could be provided.
KTL-48, KPT, Kem-Tron, FSI 5000 Customized Polyurethane or coarse stainless steel screen could be provided.
We used A572 GR50 and A36 steel to create Steel screen frame. Throughout all the processes (laser cutting, saw cutting, drilling, rolling /bending, MIG welding and mechanical assembly) we held tightest tolerances of ±.030. Customerize steel frame size available.
Composite screen frames consist of a high strength plastic and glass composite material that is reinforced with high-tensile strength steel rods. Customerize Composite frame size available.
Polyurethane screen can provide a ramp which helps to maximize screen washing capabilities.
Polyurethane screen has long service life and low noise.
Various polythane screen size available.
|Brand||Related Shaker||Screen Weight (kg)||Frame||Mesh Type||Screen Format||Mesh Range (API Standard)|
|DP 600||Dual Pool (DP) 600 series||PMD: 5||Carbon steel / Polyurethane||XL, XR||Pyramid||20 - 400|
|FLC 500||FLC 500 series||PWP: 6 PMD:7.5||Carbon steel||XL, XR||Flat Panel||20 - 400|
|Derrick FLC 2000||PWP: 4.2 PMD: 5.8||Carbon steel||MG, XL, XR||PWP/PMD||20 - 400|
|HyperPool (HP)||Pyramid screen||PMD: 7||Carbon steel||MG, XL, XR||Pyramid||20 - 400|
|U Screen||Flat panel||PWP: 2||Polyurethane||/||Flat Panel||0.075mm, 0.1mm, 0.4mm, 0.5mm, 0.7mm, 0.85mm, 1mm|
|ALS||SWACO ALS-11||PWP: 9||Composite||XL, XR||Flat Panel||40 - 325|
|BEM-3||SWACO BEM-3||PWP: 5.6||Composite||MG, XL, XR||Flat Panel||20 - 325|
|BEM-6||SWACO BEM-6||PWP: 8||Composite||MG, HC, XL, XR||Flat Panel||40 - 250|
|MD-2/MD-3||MD Series||PWP: 7 (Urethane)|
XL, XR, MG
|Flat Panel||40 - 325 (Stainless steel wire)|
|MONGOOSE/MEERKAT Series||MI-Swaco MONGOOSE PRO, MONGOOSE PT & MEERKAT||12||Composite||MG, HC, XL, XR||Flat Panel||20 -325|
|2x6||SWACO 2x6 Shakers||9.0||/||MG||Flat Panel||20 - 325|
|4x3||SWACO 4x3 Shakers||9.0||/||XL XR DX HP||Flat Panel||40 - 250|
|Brandt / NOV / Rigtech|
|Cobra||COBRA Shale Shaker||12||Composite||HC, XL, XR||Flat Panel||40 - 325|
|King Cobra||KING COBRA Shale Shaker||13.5||Carbon steel / Composite||HC, XL, XR||Flat Panel||20 -325|
|13.5||Carbon steel||HC, XL, XR, MG||Flat Panel||20 -325|
|LCM 3D||LCM 3D Shaker||13.5||Carbon steel||HC, XL, XR||Flat Panel||20 -325|
|ATL 1000||ATL-1000 Shaker||13.5||Carbon steel||HC, XL, XR||Flat Panel||20 -325|
|4X3||4x3 Shaker||8.6||Carbon steel||MG||Flat Panel||20-325|
|LCM 2D/LM3||LCM 2D/LM3 Series||8.6||Carbon steel||XL, XR||Flat Panel||20-325|
|4X5||4x5 shaker||17.2||Carbon steel||MG, XL||Flat Panel||20-325|
|D285P/380||D285P /NOV D380||13||Composite||MG, XL||Flat Panel||40 -325|
|VSM 100||VSM 100|
|Scalping: 8.5 Primary: 13.5 Secondary: 4||Carbon steel / Composite||HC, XL, XR||Flat Panel||Up Deck: 8 - 30 Low Deck: 52-325|
|VSM 300||VSM 300 Shaker||Scalping: 10.5 Primary: 10 Secondary: 3||Carbon steel / Composite||HC, XL, XR||Flat Panel||8 -325|
|Black Thunder||FSI Black Thunder shaker||6.2||Carbon steel||HC, XL, XR||Flat Panel||20-400|
|29x42||Fluids System 29x42 shaker||5.8||Carbon steel||MG, XL, XR||Flat Panel||20 - 325|
|KDDX||Kem-Tron KDDX shakers||7||Carbon steel||MG||Flat Panel||8 - 30|
|KDX||Kem-Tron KDX shakers||5.5||Carbon steel||XL, XR||Flat Panel||20 - 325|
|KPT28||Kem-Tron Tango Series||5.6||Carbon steel||XL, XR||Flat Panel||20 - 325|
|2X3||Tri-flo PTP shakers 126E||6.8||Carbon steel||MG||Flat Panel||8 - 250|
|4x3||Tri-flo PTP shakers||11.7||Carbon steel||MG||Flat Panel||4 - 325|
|Triton||TSS-NNF||/||Carbon steel||XL, XR||Flat Panel||20 - 325|
|Vortex Fluid Systems|
|Orbital Vortex||3000 series||/||Carbon steel||XL, XR||Flat Panel||20 - 325|
API RP 13C shaker screen sieve and conductance testing
was conducted 10 flat shale shaker screen provided by a representative of us (Shaanxi Aipu Machinery Manufacture Company). The nonblanked area was also estimate for the 10 screens.(see report).
Main of the results of the API RP 13C Shaker Screen Sieve and Conductance Testing and non-blanked area mud retained results. Please see right side.
There are mainly two materials used in shale shaker screens today.
1. Stainless steel wire (S.S304 ~ S.S316L).
2. Polyurethane wire.
Screens may be constructed with one or more Layers. Non-layered screens have a single layer, finemesh, screen cloth (reinforced by coarser backing cloth) mounted on
a screen panel. These screens will
have openings that are regular in
size and shape. Layered screens have two or more fine mesh screen cloths, usually of different mesh (reinforced by coarser backing cloth), mounted on a screen panel. These screens will have openings that vary greatly in size and shape.
There are several types of wire cloth used in the manufacture of
oilfield screens. The most common
of these are Market Grade (MG), Tensile Bolting Cloth (TBC), Triple Layer Super Fine (TRSF or DX) and Extended Rectangular (ER). These
are square mesh weaves, differing
in the diameter of wire used in
MG:Single Layer Screen Mainly used as a scalping screen.
TBC:Single layer Tensile Bolting Cloth over a heavy support mesh Well defined cut point Poor blind resistance.
TRSF/DX:Two superfine layers over a heavy support cloth Good screen life Good blind resistance.
XR:Two oblong-aperture cloth layers supported by a square mesh High conductance Long life Good blinding resistance.
Screen Capacity, or the volume of mud which will pass through a screen without flooding, varies widely depending on shaker model and drilling conditions. Drilling rate, mud type, weight and viscosity, bit type, formation type, screen mesh all affect throughput to some degree.
To increase screen capacity without
increasing the size or number
of shale shakers, three-dimensional
screen panels are available.
3-D screen panels increase the usable screen area of a screen panel by corrugating the screen surface, similar to the surface of a pleated air filter or oil filter. 3-D screen panels are most effective when installed as the submerged, feed-end screen on linear-motion shakers to take full advantage of the additional screen area. Past the fluid end point, a three-dimensional screen tends to “channel" the drilled solids and increases solids bed depth and the amount of liquid carried off the screen surface. Using a flat screen at the discharge end of the shaker eliminates channeling, increases cuttings dryness,
and decreases fluid loss. Typically 3-D screen is Pinnacle shaker screens replacement.
Standardization of screen cloth
designations has been recommended
by the API committee on
Standardization of Drilling Fluid
Materials. The purpose
for this practice is to provide
standards for screen labeling of
shale shaker screen cloths. The procedures
recommended for labeling
allow a direct comparison of separation
potential, the ability to pass
fluid through a screen, and the
amount area available for screening.
The API screen labeling includes of the following:
1. Manufacturer’s designation;
2. Separation Potential and
3. Flow Capacity.
The D100 value represents the diameter of the coarsest particle (in microns) which will pass through the screen during a dry laboratory test and is a single number, not a range of sizes.
The API screen designation for a screen is the API-defined range of sizes into which the D100 value falls. Some of the coarser size classes span quite a large range of D100 values.
The D100 value is the finest particle diameter at which the screen no longer sends 100% of the particles to the discard stream. This is also the coarsest particle that will pass through the screen.
The D50 value is the particle size at which the screen sends 50% of the particles to the “overs"(discard), while the remaining 50% report to the “unders"(undersized stream) and the D100 should not be compared in any way. The D50 was interpreted as the micron size where a screen makesa 50/50 split.
The API RP 13C D100 is a very specific value determined from a carefully-controlled laboratory procedure so that any laboratory should measure the same value for any given screen cloth.
Yes, more than half of the particles that are coarser than D50 and finer than D100 will report to the overs. A significant portion of the particles finer than D50 will also report to the under. (By definition, every particle classified in the D100 size or coarser will report to the overs as expected.)
Aipu intends to remain completely flexible and will accept orders according to the system that customers prefer. Orders may be placed using either the old nomenclature or the new API screen designation.
The new API RP 13C labeling practice provides an excellent standard and benchmark for comparing one screen manufacturer’s screen separation against another. The closer the D100 values, even within the same size class, the better the comparison will be.
Aipu will work with customers to ensure that screen comparison tests are performed in a fair manner to both the competition and to Aipu, allowing the development of a balanced test plan, including a double-blind particle size analysis protocol, whenever a screen comparison is to be conducted.
The biggest variation is due to the shift from the D50 value to the D100 value.
The previous test procedure for screens, API RP 13E, measured the distribution of the screen holes as measured by light, not solids. Subsequently, the screens were labeled using the D50, D16 and D84 separation curve.
The current test procedure, API RP 13C, measures the coarsest particle which passes through the screen, using a much more accurate and repeatable test method. The screens are now labeled using the D100 size criteria.
Maintaining your shale shaker screens is as important as the screen selection itself.
Any screen’s service life can be maximized through proper selection and maintenance. Proper screen maintenance starts with regular inspections. Look for tears, signs of blinding, and gaps between the screen mesh and frame.
For example, if your inspections; show that a screen typically lasts 9 weeks, you can change the screen after 7 or 8 weeks during scheduled downtime and avoid the interruption to your process. Or, if your material has corroded the screen, you can replace it with a screen made of mesh of a different steel alloy or a synthetic
After inspecting the screen, clean it off if needed. The cleaning method will depend on your material and process and can range from light brushing of dry, lightweight particles to power-washing of heavy or cohesive particles from the screen.
Usually, when the shale shaker is first stage solids control equipment the shaker screen can be 30-100mesh. When the shale shaker is a part of mud cleaner, the shaker screen for the cleaner will be 80-200mesh then.
Of course, the selection is relative with drilling mud property and our working condition at the drilling job site.
Replacement screen steps:
1) Before every shut off, the shaker should run without any medium for 5-10 minutes, at the same time, use clean water to flush screen clean
2) After every operation, the shaker frame and screen should be flushed by water (summer) or steam (winter), there should be not much sediment on shaker frame and shaker screen. Especially when the drilling mud has large viscosity and high density or screen is finer than 60 mesh.
Otherwise, the particles and fine sand on screen will block screen hole, when we start shale shaker, it will decrease filtration result and lead drilling mud flow away, lose much unnecessary cost
During operation, while the screens are broken , or cannot separately well, it then should be replaced by other shaker screen. Aipu shaker screen can make high quality shaker screens for its own brand shale shaker as well as other famous brand. And also, Aipu can customize screens according to clients certain requirements.
|Off-spec end product: too many oversize particles||Screen opening too large||Select a screen with a smaller opening.|
|Hole or tear in screen||Replace shale shaker screen.|
|Material bypass||Check seals and gaskets|
Use a pretensioned screen.
|Off-spec end product: too many fines||Screen opening too small||Select a screen with a larger opening.|
|Severely blinded screen||See “Screen blinding"problem below|
|Screen overloaded||Reduce feedrate.|
|Low product yield from a multiple-deck screener||Upper screen blinded||See “Screen blinding"problem below|
|Upper screen opening too small||Select an upper screen with a larger opening.|
|Lower screen failed||Check lower screen for holes or tears|
|Lower screen opening too large||Select a lower screen with a smaller opening.|
|Screen blinding||Wire diameter too heavy||Select a screen with a lighter wire diameter.|
|Worn sliders or balls||Check antiblinding devices and replace them as needed.|
|Screen blocked with material||Clean or replace screen.|
|Screen overloaded||Reduce feedrate.|
|Short screen life||Wire diameter too light||Select a screen with a heavier wire diameter.|
|Improper handling||Be careful not to crease or dent screens during handling or installation.|
|Screen overloaded||Reduce feedrate.|
|Screen corroded||Instead of stainless steel wire mesh, try alternative alloys or use a screen made of a synthetic material.|