shale shaker screen - products - aipu solid control,solids control system,drilling waste management

shale shaker screen - products - aipu solid control,solids control system,drilling waste management

Shale shaker screen is the critical parts or spare parts for solids control system&period It is screen panels fit on shale shakers&period As shale shaker is the chief defense of solids removal during well drillings, screen quality will definitely affect shaker performance much&period

AIPU is proud to say weve shared over 15 years experiences in screen manufacture. We are able to produce various kinds of replacement shaker screen for different makes and models shaker. Such as the Mongoose series, Meerkat series, MD series, ALS series, BEM series; the Cobra series, the LCM series, the VNM series, the VSM series, the KPT series, the 5000 series, and so on.The accurate cut point and great durability lead less cost on mud loss also screen consumption. 1. The high-quality raw material of S.S304~S.S316L. 2. High conductance and non-blanked area. 3.Multiple layered configurations. 4.Completely interchangeable with genuine shaker screens. 5.Custom built service available. 6. Cost-efficient with the best rate between price and quality. 7. Shaker screen is sent to the US for API RP 13C compliance test. The only one supplier in China with API RP 13C compliance test report.

AIPU is proud to say weve shared over 15 years experiences in screen manufacture. We are able to produce various kinds of replacement shaker screen for different makes and models shaker. Such as the Mongoose series, Meerkat series, MD series, ALS series, BEM series; the Cobra series, the LCM series, the VNM series, the VSM series, the KPT series, the 5000 series, and so on.The accurate cut point and great durability lead less cost on mud loss also screen consumption.

Besides listed screens, there are also many other models and makes of shaker screen. Such as the SCOMI, DFE shaker screens, and so on. Please be assured, Aipu will provide you all exact fit replacement screen. If your shaker screen is very special and rarely used, then just give us the specifications and well build it accordingly to fit your shakers exactly.

Remark:All listed shaker screens are right fit replacement panels but not genuine ones. Furthermore, the M-I SWACO, NOV, DERRICK, KEMTRON, TRI-FLO, FSI, VORTEX, NATIONAL, FLC, MONGOOSE, etc. are the marks and reserved by original shaker screen manufacturer. All information is just as a reference.

Packing shaker screens are based on certain shaker screen type. Cater for most customers demand we usually pack the framed screen at 1 panel per carton, while the hook strap ones will be 2 panels per carton. And almost screen panels will be packed with plywood pallets or boxes with bundle belt. Every package will be identified by package detail for convenient quantity re-check. Packages will be seaworthy and airworthy to avoid any damage or loss.

basics of shale shakers - drilling fluids - rig worker

basics of shale shakers - drilling fluids - rig worker

A higher g factor gives better solids separation; however, it will also reduce screen life. Proper screen tensioning is critical with high g shale shakers. Most circular-motion shakers have an acceleration of 4-6 g's. Most linear motion shakers have an acceleration of 3-4 g's.

3. Slope and Number of Screen Decks - A screen deck (or basket) is vibrated to assist the throughput of mud and movement of separated solids (see Figure 12). Shale shakers that use an elliptical motion usually have divided decks with screens placed at different slopes in order to provide proper discharge of cuttings. Sloped-deck units can have one screen covering the entire deck length, or have a divided deck which has more than one screen used to cover the screening surface, or with individual screens mounted at different slopes. Multiple-deck units have more than one screen layer. In a 2 or 3-deck unit, mud must pass through one screen before flowing through the second, etc.

Screening Area - Shale shaker screening is the primary means of solids separation. If the shale shaker is not working correctly or if the screens are incorrectly sized or torn, efficiency is drastically reduced. Screening action depends on the vibrating action to make mud flow through it. Vibration under mud load creates stresses on the screen and if the screens are not properly installed and supported, they will quickly wear or tear.

Providing a straight through flow path with the same diameter warp and snute wires in and over and under pattern. This is the most common weave producing the same mesh count vertically and horizontally.

Since the thickness (diameter) of the wire used to weave a screen can be varied for the same mesh, actual aperture or opening dimension in either direction can be used to describe a screen. Where the opening is small, a micron scale eliminates the use of decimals or fractions. There are 25,400 microns to the inch. Thus, an opening of 0.0213 in., which is roughly the opening in a 30-mesh screen, has a dimension of 541 microns. Both open area and conductance are terms used to describe and compare screens. Although percent open area is related to the ability of a screen to handle flow rate, conductance is a much better measure of the amount of fluid that will pass through a screen. The flow rate of a shale shaker is directly related to the area the liquid can fall through.

Mesh Count is the term most often used to describe a square of rectangular screen cloth. Mesh is only an indicator of the size opening as it is the number of openings per linear inch counting from the center of a wire. A mesh count of 30 x 30 indicates a square mesh having 30 openings/in. in both axis directions; a 70 x 30 mesh indicates a rectangular opening having 70 openings/in. in one direction and 30 openings per inch in the other.

A square mesh screen will generally remove more solids and make a finer cut than a rectangular mesh having one dimension the same as the square mesh, and the other one larger. The main advantage of the rectangular mesh screen is that it does not blind as easily. Another advantage of a rectangular mesh is that it can be woven with heavier wires, which offer longer screen life. Also, it has a higher percentage of open area and higher conductance which increases the fluid volume capacity of the shale shaker.

shale shaker and how select proper one for your mud separation project - solids control shale shaker

shale shaker and how select proper one for your mud separation project - solids control shale shaker

In the drilling industry, a vibrating screen called shale shaker is the first equipment that does the filtration process. The purpose here is minimizing cutting solids in the mud. A shale shaker is the first line of defense in minimizing the cuttings content because it separates the largest solids first. The screens consist of different layers of mesh and are vibrated in order to increase the filtration efficiency.

A shale shaker should employ all screen areas to remove solids from drilling fluid and minimize the drilling fluid loss. The screen vibration pushes the particles uphill over the screen and mud is collected at the underside of the screen. There is a limitation in shale shakers operations in which filtration performance alters as the feed properties change. Typical vibrating screens vibrate with a constant speed and constant motors forces which results in acceleration on the screen. In handling the huge volume of drilling mud, the acceleration usually decreases as mudflows into the screen. Shakers operating in the oil industry have higher acceleration than the required magnitude to be able to have enough acceleration when heavily loaded.

In the new technologies developed for shale shakers, constant-g technology is becoming a popular technique. This technique measures the screen acceleration and sends the signals to a variable frequency drive to keep constant acceleration even under varying loads.

Drilling liquid is returned to the well surface and then flows on the shale shaker screens. After the drilling mud was processed by the shaker, it flows to the mud tanks where other solid-liquid separation equipments separate the finer particles from mud. The separated particles are sent to a holding tank where they further will be disposed of.

Two types of end-feed and center-feed shale shakers are used in the drilling industry which the end-feed shaker is the most common one. The screen of an end feed shaker is rectangular while center feed screens are circular. Because drilling fluid flow pattern is the difference for both screens, so the vibration pattern for end-feed and center feed shale shakers is not identical. The screen motion dominates particle velocity on the screen and drilling flow rate though cake and screen.

In an end feed shale shaker, the motion of the imaginary line created by the intersection of vertical plane parallel with the walls and screen cloth is elliptical. All points on the line perpendicular to the vertical plane parallel with the walls and passing through the screens have identical motion. In a direction perpendicular to the vertical plane parallel with the walls, motion is zero. This type of vibration results in the motion of particles across the screen in a straight path to the mud pits.

In the radial distance from the center of the circular feed shaker, the motion of all points on the screen is elliptical. All points vibrate in a vertical plane perpendicular to the radial plane. In this kind of shaker, particles also move in a circular shape in a horizontal plane perpendicular to the radial plane and the screen experiences a 3-D motion. In the elliptical motion screens, motion is identical in all angular location around the center.

Hoberock proposed that the linear vibration than the circular motion model results in higher efficiency in solids conveyance. He also showed that even elliptical vibration shows higher efficiency compared to the linear motion as a result of that screen life is increased.

For the multi-deck shale shakers, it is recommended that the coarsest mesh size is placed at the top, then the finer mesh size is used as the middle screen and finally, the finest mesh should be placed as the bottom screen. This configuration allows the shaker to collect the finer particles with the highest efficiency. The problem of multi-deck shakers is in maintaining the bottom screen.

It has been shown that the performance of a shale shaker depends on the large number of parameters. The most important variables affecting the capacity of a shale shaker are fluid rheological properties, concentration and size distribution of solids, screen mesh and area, vibration frequency, vibration pattern, acceleration, and deck angle.

The maximizing capacity of a shale shaker is a trade-off between the content of separated cuttings off the screen and filtrated drilling mud passed through the screen. For example, if the shaker deck is inclined downward to enhance particles transfer more drilling mud flows off the shaker channel, and cuttings at the outlet have more moisture while tilting the screen up decreases solids velocity but more fluid is saved. There is an optimum angle for each shaker, depend on the manufacturer, which tilting the screen up. more than that causes solids accumulation on the screen and blocking the screen pores. The physical mechanisms justifying the effect of vibration on the fluid displacement in porous media are not yet known.

It is suggested that an increase in flow rate is caused by changes in the pore structure and particle rearrangement. A research was conducted on the effect of vibration on the flow rate of Hexadecane as a non-wetting phase in a column filled with water and sand, the Hexadecane flow rate increased by increasing amplitude. Another explanation for the effect of vibration on the flow rate is based on the capillary trapping. The capillary trapping mechanism is the most promising one. The idea for this mechanism is based on the interfacial tension which is considered as the most significant parameter on multi-phase flow in porous media.

Changing in pore sizes of porous media trap the fluid which leads to variations in capillary pressures. This pressure imbalance changes the flow rate of liquid through the porous media. By applying vibration, we see that vibration of the screen will result in an inertial body force acting on the fluid which this movement pushes the trapped fluid to reflow. Vibration creates an internal circulation in the mud and it gives more time to the fluid to touch the screen and this might be one of the effects of vibration on the enhancement of the flow rate.

Particle size distribution and concentration both have an effect on the process of solids-liquid separation. Increasing the solids concentration in drilling mud reduces the performance of the drilling operations. Experimental work shows that muds containing more than 10% by mass solids caused the failure infiltration process. Microbit drilling results indicated that very fine particles in a drilling mud have more adverse effects on the flow rate than larger sizes.

It is claimed that particles smaller than 1 are much more damaging to the filtration process than particles larger than 1. All solid-liquid separation tools in the drilling industry are designed to remove particles larger than 1. The shale shaker changes the formation of particle structure in the drilling mud due to vibration. Shear stress of the drilling fluid is decreased due to vibration while polymeric drilling fluid is not affected by imposing vibration.

Research on the effect of plastic viscosity and yield values shows that plastic viscosity of drilling mud flowing through the screen and cake has a significant effect on the capacity of a shale shaker while yield value has a slight effect on the performance. It has been also shown that increasing the plastic viscosity and yield value of a drilling fluid increases the required screen area used in a shaker. The capacity of a shale shaker can be increased by decreasing plastic viscosity and increasing screen area, shaker angle, and acceleration.

The install location of the vibrating motors on the shale shakers can be considered as one of the parameters involving in the design of shale shakers. Some manufacturers say that if a vibrator is precisely mounted on the shaker support there is no need to incline the shaker downward to get desired mass rate of solids on the screen but one should aware that inclining the screen downward decreases the drilling mud flow rate and increases the moisture content of the particles leaving out the channel of the shaker.

In an experimental work done by Porter on a vibrating electromagnetic screen, the capacity improved by increasing frequency and decreased by amplitude. Their results showed that there is optimum operational conditions which after passing the optimal point, flow rate decreased. Angle 33 was found as the most effective angle.

It has been shown that frequency is one of the important parameters affecting screen performance while other researches showed the reverse results. The interaction between frequency and particle size shows that for a feed whose particle size is close to the opening, frequency is the most effective parameter. Two experimental works claimed that screening efficiency decreased as frequency increased.

A study showed that an increase in deck angle increased the effective mesh area and number of contacts per unit screen length. An increase in the deck angle enhanced the passage of particles. It was found that angles more than 15 decreased the effectiveness.

A work by Hoberock on an experimental shaker working in acceleration 4g and two frequencies 20 and 60 Hz showed that frequency has an insignificant effect on the fluid capacity of the shaker. His work showed that flow rate at 60Hz is slightly less than that in 20Hz. Their results on a 100*100 mesh screen with three types of drilling fluids showed that the capacity of a shale shaker depend heavily upon the acceleration.

A screen whose conductance is higher than the similar screens shows higher performance. The proposed mechanism for this improvement is in considering permeability and screen thickness than solely the pore area percentage.

A work by Dorry shows that capacity of a shale shaker increases by increasing g-force. His work revealed that the rate of increase in capacity of the shale shaker reached a minimum plateau. It indicates that there is a threshold g-force which after passing that point increasing acceleration does not have any effect on the performance of the shaker.

Usually, a shale shaker works with two motors that apply the vibratory motion on the shaker screen. There are two eccentric weights in the motors to generate a vibrating force when they rotate. The vibrators rotate in opposite directions and create a force on the screen. The force pushes the particles along with the screen and off the screen outlet. The motors can be installed on the vibrating deck or on the support frame.

The shaker screen plane should be capable of tilting to handle fluctuations in mud flow rates and maximize the use of the screen area. Depend on the type of the shale and drilling process, different angling systems are used which mechanical, hydraulic, and pneumatic mechanisms are the most common. It is reported that mechanical and hydraulic systems are faster than pneumatic mechanism and need less energy to function.

This part is the most important part of the shale shaker which most of the efforts in improving the performance of a vibrating shale shaker concentrate on this part. The screen removes drilled cuttings and sends them to the base and make the filtration process more convenient.

This part collects the drilling mud before it flows into the shaker channel. Different types of feeders are used in the drilling industry which the most common one is called weir feeder. This feeder is capable of distributing the drilling mud along the entire shaker screen surface. The feeder has a bypass streamline that sends the mud directly to the collecting tank without being processed by the screen.

A tank is used when the shaker is being repaired or screens are being changed. In the situations that drilling mud is too thick to pass through the screen, the screen is blinded or plugged which in this situation tank is used. A feed tank has a bypass port which allows the drilling mud goes to the mud circulation system.

Different types of shaker screens with different methods of characterizations of the screen cloth are used in the filtration industry. In the drilling industry, the plain square mesh is the most common one. The number of wires per inch is called mesh. A higher mesh number means finer particles can pass through it. For preventing problems such as plugging in the square screens, rectangular mesh screens are usually used. These screens enhance the ratio of the opening area. Layered screens are known as the best option for preventing plugging. Tilting the screen changes flow capacity, conveyance and cuttings moisture. Drilling fluid is lost due to the failure in the borehole and conveyance reduces due to the particle plugging close to the outlet of the shaker.

The layered shale shaker screens are non-plugging and easily changed. API set some instructions for the shale shakers screens mesh. APR recommends that numbering a mesh in both directions should be followed in parentheses by opening size in microns and the percentage of open area. For example, a screen with a specification of 85 *85 (642 *642, 49) means a square screen with 85 openings per inch in each direction which has an opening size of 642 and an open area of 49%. Screen with the specification of 14090 (211585, 56) means a rectangular mesh screen with 140 openings in one direction and 90 openings in another direction. Openings in 140 mesh direction are 211 micron and in 90 mesh direction has the size of 585 microns.

Some screen manufactures recommend that calculated length of required screen should be increased by one-third to consider for the drainage zone for wet filter cake. Screens with mesh number 40*80 are the most common screens in the drilling industry.

Recently, a new technology called pyramid screen has been introduced in the screen industry. In this technique, the maximum area of a shale shaker screen can be achieved. Pyramid screens have a flat bottom and corrugation shape on top. The shaker screens maximize the performance of the screen using building up without the requirement of having a larger screen which results in less expensive shale shakers.

Industrial reports show that a constant-g control shale shaker is capable of filtration of finer solids than the typical shale shakers. The efficiency of solids removal is improved with a constant-g control shale shaker.

Vibration acceleration of a shale shaker is calculated by Newtons second law of motion. As the drilling fluid flows onto the screen, the system mass increases which results in decreasing the acceleration. A shale shaker vibrates at a constant frequency which generates a constant force. When the flow rate decreases, the acceleration increases and it causes higher surface area which results in screen failure.

The performance of a shale shaker depends on the vibration intensity and shaker structure. The vibration has effect on the agglomeration of particle. Different techniques such as high temperature, solvent extraction, and soap washing have been proposed to separate oil from cuttings. These techniques have limitations such as safety issues and high energy consuming.

Very few experimental studies have been done on the filtration of drilling mud using shale shakers. Cagle compared two shale shakers experimentally to investigate the screen cloth effect on the filtration process. Hoberock developed a model on a full-scale shale shaker to predict the fluid handling capacity of the vibrating screens. It is shown that a shale shaker efficiency in treating mud is a function of vibration frequency and acceleration, shaker angle, fluid rheological properties, type andamount of drilled solids, mud height, and type of screen and mesh size.

In a new design in the drilling industry, a vacuum conveyor separator (VCS) system was innovated to improve the efficiency of removal of solids from drilling mud. In this system, blinding does not happen and there is no need to install respiratory systems. VCS systems are able to monitor fluid and solids volume simultaneously and record and transmit fluid data. In these kinds of solids separation equipment, there is no need to install degasser, pressure washers, and solids dryer so operation cost becomes minimum.

One of the concerns with using fine mesh screens in viscous mud systems is that screen life and flow capacity decrease and the plugging screen is observed repeatedly. The typical layered screens are composed of two fine mesh layers supported by a coarse screen.

A field report shows that mud viscosity has a significant effect on the performance of the screen. Increasing viscosity decreases capacity of a screen exponentially. The results show that the capacity of a screen in handling drilling mud is not linear function of the covered surface of the screen.

One of the most common physical separation techniques in drilling industry is the mechanical screening. Separating tools are classified into moving and static screen equipment in which the machine can be inclined or horizontal.

The process of screening is controlled by physical variables such as particle shapes, acceleration, vibration type and bed density. The vibration motion and screen mesh size have their pros and cons in the process of screening. The most effective pattern of vibration is sinusoidal vibration which is applied on the angled screen relative to the horizontal.

The actual flow rate of a shale shaker infiltration of drilling mud is less than the capacity of a shaker which processes only fluid. Because of the presence of the solids in drilling mud, the capacity of a shale shaker may be reduced due to one of the following effects:

The five types of mechanical vibration are used in solids separation industry: Circular motion shakers in which motion at the low angels gives the best performance. This vibrator works by an eccentric drive or mass offsets that cause the shaker to vibrate in the orbital pattern. The solids move across the screen and leave out the screen due to gravity and directional shifts. The shaker is inclined between 2 to 5 degrees and is used for clean cuttings.

Circle-throw machine is another type of vibrator in which an eccentric shaft shakes the screen at a given angle. As the vibrator returns to the steady-state, the cuttings drop down by gravity to the collector. This equipment is usually used in the mining industry for solids size which varies from 5 to 20 in. This shaker is employed for large solids and a high volume rate at the outlet.

The solids capable of passing through the screen cloth return back to a crusher and then is mixed with crushed solids. The most common application of this shaker is in the washing process. The results of vibrating screens used in the mining industry cannot be generalized for the shale shakers in the drilling field because the main material in which shale shaker process is fluid rather than solids.

High-frequency vibrators vibrate only the screen and are usually used for particle sizes smaller than 20 mm. These vibrators fulfill a secondary filtration for more separation process and their angles vary from 3 to 12.

Tumbler screen is another separator in which elliptical motion does the filtration process. In these screens, the fine material blinds the screen center, and larger particles move to the collector. Particles on the screen are broke down and leave the screen cloth. For improving the separation efficiency of a tumbler screen, adding more decks is recommended.

In the G-Control technique, the screen acceleration is measured and then a signal is sent to a variable frequency drive to keep constant g-force. As drilling fluid enters the shaker screen, vibration frequency decreases. The current shale shakers in the industry have high acceleration than required one to handle the situations the screen is heavily loaded. In recent developments in the shaker industry, a new technology called G-Control came to the market to overcome the problem of decreasing acceleration of the shaker screens due to being loaded. By applying Newtons second law of motion, we can easily see that acceleration is inversely proportional to the drilling mud mass. The shakers in the fieldwork at a constant frequency which results in decreasing acceleration as the mass of mud increases Industrial reports claim that these types of shakers can remove finer solids than the typical shakers used in the fields.

Whenshale shakerscease to operate as expected, a variety of items need to be checked and the problem eliminated. This section presents a general guideline for troubleshooting some common problems observed in shaker operations.

[] Conventional shale shakers usually produce a g factor of less than 3; fine-screen shale shakers usually provide a g factor of between 4 and 6. Some shale shakers can provide as much as 8 gs. Greater solids separation is possible with higher g factors, but they also generally shorten screen life. As noted previously (in the Linear Motion Shale Shakers subsection), only a portion of the energy transports the cuttings in the proper direction in unbalanced elliptical and circular vibration motion designs. The remainder of the energy is lost due to the peculiar shape of the screen bed orbit, as manifested by solids becoming nondirectional or traveling in the wrong direction on the screen surface. Linear motion and balanced elliptical designs provide positive conveyance of solids throughout the vibratory cycle because the motion is straight-line rather than elliptical or circular. Generally, the acceleration forces perpendicular to the screen surface are responsible for the liquid and solids passing through the screen, or the liquid capacity. The acceleration forces parallel to the screen surface are responsible for the solids transport, or the solids capacity. []

[] Shale Shaker Systems construct the whole system in order to purify the fluid. So when we chose a good shale shaker, we need to know the parts of it at the beginning. Next we will give you a general understanding of it. []

Derrick and PYRAMID is a registered trademark of Derrick Corporation, Buffalo, New York. FLC500, FLC2000, PMD, PWP, Dual Pool, Hyper Pool series shale shaker and related shale shaker screen are the production of derrick corporation. There is no affiliation between Derrick Corporation and

types of shale shaker - motion, components and design

types of shale shaker - motion, components and design

Drilling fluid (mud) is an essential component of modern drilling processes: it lubricates and cools the drill bit and conveys drilled cuttings away from the borehole. This fluid is a mixture of expensive and environmentally sensitive chemicals in a water- or oil-based solution. To reduce drilling operational costs and existing environmental concerns, shale shakers are used to mechanically filter cuttings and solids, enabling the drilling fluid to be recycled (Figure 1).

The three main shale shaker components are the hopper, the screen basket and the vibrator (Figure 2). The hopper, also known as the shaker base, serves as a collection pan for screened fluid, also known as underflow. The screen basket holds the fluid-sifting screens securely in place. The vibrator applies the vibratory force profile to the screen basket. The vibrator is generally a specialized set of electric motors connected to eccentric weights whose centrifugal forces are coupled to generate vibration profiles.

Historically, the progression of shale shaker design has been the introduction of finer mesh screens and more sophisticated screen vibration profiles. The design evolution comprises four distinct vibration profiles, as illustrated in Figure 3:

The unbalanced elliptical motion machines have a single rotating vibrator located above the screen baskets centre of gravity. The resulting motion is elliptical at the ends of the deck and circular below the vibrator, as shown in Figure 3(a). These types of shakers usually have a downward slope that allows transportation of cuttings across the screen and off the discharge end. However, the downward slope reduces fluid retention time and limits machine capacity. The next generation of shale shakers, introduced in the late 1960s and early 1970s, produces a balanced circular motion, as illustrated in Figure 3(b). This type of motion can be achieved by placing a single rotating vibrator at the screen baskets centre of gravity. The consistent, circular vibration allows adequate transport of solids with the screen basket in a horizontal orientation. Figure 3(c) illustrates a relatively new design that uses a pair of eccentric shafts rotating in opposite directions to produce linear screen basket motion. When placed at an angle to the screen basket, as shown in Figure 3(d), the eccentric shafts produce balanced elliptical motion. Linear and balanced elliptical motions provide superior separation and conveyance of cuttings, enabling inclined screens to provide improved liquid retention.

Shale shakers are traditionally designed and built for specific anticipated operating conditions. Factors that influence the associated vibration profile include the expected cutting types and mud flow rates. Because no one profile works efficiently across all drilling conditions, the shale shakers operating performance is fully specified at the design stage. Once the shale shaker has been built, its vibration profile is neither tunable nor adaptable; any field operation that deviates from anticipated conditions results in suboptimal shale shaker performance.

Figure 4 shows a schematic of the PVS with three actuators mounted to the shale shaker. With appropriate actuator placement and sufficient force output, this system can be controlled to achieve all four of the primary vibration profiles of Figure 3. In addition, progressive elliptical shape motion, illustrated in Figure 4, can be attained. This vibration profile enables superior conveyance of cuttings and a staged processing of cuttings at the shale shaker entrance, middle and exit.

The increasing popularity of active vibration control strategies for low- to mid-frequency vibration problems has identified the need to optimize actuator layouts. Implementing an active vibration control solution for a well-posed problem has become practical, if not yet routine, given recent advances in control algorithms and microprocessors. However, the performancebottleneck for most systems involves poor compromise between performance and efficiency as a function of actuator placement. For simple systems, the designer can rely on intuition and experience in placing actuators, but more complex systems require multiple actuators whose optimal placement may defy intuition, and optimization of such systems by trial and error can be costly and time consuming.

The presence of multiple attributes in an optimization problem, in principle, gives rise to a set of optimal solutions (known as Pareto-optimal solutions), instead of a single optimal solution. In the absence of any further information, none of these Pareto-optimal solutions can be said to be better than the others. This demands a user to find as many Pareto-optimal solutions as possible. The Pareto-optimal solutions to a multi-attribute optimization problem are often distributed very regularly in both the decision space and the objective space. A problem that arises, however, is how to normalize, prioritize and weight the contributions of the various objectives in arriving at a suitable measure. In addition, these objectives can interact or conflict with each other in nonlinear ways. The present research seeks a more general method for optimizing the locations of multiple actuators in a shale shaker system with conflicting attributes.

Derrick and PYRAMID is a registered trademark of Derrick Corporation, Buffalo, New York. FLC500, FLC2000, PMD, PWP, Dual Pool, Hyper Pool series shale shaker and related shale shaker screen are the production of derrick corporation. There is no affiliation between Derrick Corporation and

cagle oilfield services, inc

cagle oilfield services, inc

With about 35 years in the oil industry, Cagle Oilfield Services, Inc. has gained the experience and knowledge necessary in today's oilfield. Today's ever-changing market demands a cost and time-saving response to your parts and equipment quotes and orders. We can provide new equipment and parts, manufacturer direct, or give you the option of refurbished equipment through our reputable, certified sources (API certified). Contact us today and let us put our experience and expertise to work for you.

This intensive four-day school covers the basics of solids removal from drilling fluids. Economics as related to mud costs and penetration rates are stressed. A mix of practical, as well as technical, material is presented in non-technical terminology making this course ideal for Drilling Foremen, Drilling Technologists, Drilling Engineers, Mud Engineers, Drilling Supervisors, Drilling Superintendents, or anyone involved in drilling or drilling operations. View the schools flyer (PDF)

Harsh chemicals and severe heat present in drilling fluids make a perfect laboratory to test the durability and performance of any shale shaker screen. Constructed to exacting specifications, Cagle Oilfield Services, Inc. can provide flat panel style replacement screens to fit the following brands of shale shakers: NOV Brandt, Fluid Systems, National Oilwell Varco, Derrick, M-I Swaco and Others.

The HCR is a rectangular mesh weave developed by Cagle Oilfield Services, Inc. As the primary layer in the manufacture of HCR MagnaFlow flat panel style replacement screens, the HCR mesh is used on vibratory shakers in the oilfield, mining, and industrial markets.

As an outgrowth of our Practical Solids Control Schools and our own experience in solids control for about 35 years, Cagle has developed and offers both operators and drilling contractors considerable expertise in the design, installation, and operation of mud and solids control systems.

With about 35 years of experience in the oil industry, Cagle Oilfield Services, Inc. has acquired an abundance of knowledge in oil field drilling. We offer our full line of supply services to fulfill your operating needs which keeps you running with less downtime and lower costs.

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