Tag Archives: Linear Motion Shale Shaker

22Oct 2012

Single-shaft inertia shale shaker vibration exciter

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Vibration exciter is the direction power source of compelling shale shaker produce desired trajectory, the different type of vibration exciter and installation model, it directly influenced the structure characteristics, working efficiency and using life of shale shaker.

The single-shaft vibration exciter is widely used in the early 1980, it is divided into self-centrifuge type and common vibration exciter the two types, following the development theory improve of drilling fluid shale shaker, the type of vibration had already replacement by double motor self synchronous vibration mode.

The drive belt wheel on the common vibration exciter must follow the screen box to vibrate in the work of shale shaker. This type of shale shaker is called common shale shaker, such as early NS-77screen, NS-80 screen. The structure of simple Single-shaft inertia shale shaker vibration exciter although is simple, but because pulley and vibrate, cause the centre pulley periodic change, make the drive belt elongation or shorten repeated, influenced using life time,Screen box movement is not stable.

The self-fixed centre vibration use the self-fixed centre shale shaker. when shale shaker works, the potation belt wheel of the exciter only do fixed-axis rotation, it is not following the screen box to vibrate. The shale shaker with the function is called the centre shale shaker, such as early 2YNS-D shale shaker, NS-821 shale shaker and ect.

18Oct 2012

New balanced elliptical motion shale shaker

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Based on the oil field tests and compared with other shale shake types, balanced elliptical motion technology can consistently provide gentle rolling motion, better solids removal and fluid circulation, less, screen wear. This paper discussed the latest technology in shake shaker, introduced the theory, stricture and performance of the balanced elliptical motion shale shaker.

Although the popular shale shaker is linear motion shale shaker at home and abroad, but looking from the theory and practice, linear motion shale shaker is not the best choose. So areas of abroad allocate the scraper before the shale shaker to dispose the mud.

The balanced elliptical motion shale shaker is more difficult to design than linear motion shale shaker, but following the development of technology and the maturity of the vibration motor technology, design some new balanced elliptical shale shaker.

BEM-3 shale shaker

SWACO company import the SWECO patent technology, use the eccentric block which is slant with the sifter, produce continuation and the same direction elliptical motion, in order to increase the separation effect. In theory, to drilling cuttings screen and dry, the balanced motion is the best choose. Because when solid particles roll along with screen surface, increase the contact area, so increase screening ability. Otherwise, in the same cast angle and amplitude, each unit retention time of balance elliptical shale shaker is longer than linear motions shale shaker.

BEM-600 shale shaker

 

BEM-600 shale shaker is the second generation shale shaker of SWACO, the product use the balanced elliptical patent technology. Tests show that, compared with other type shale shakers, it can keep the soft movement locus, has the best ability of remove drilling cuttings, it also can improve drilling fluid recovery, Decrease the screen wear. Besides, it cover area is small, the whole stainless steel structure, double-deck reel, the pneumatic structure is steady. So BEM-600 shale shaker has the best wipe method, greater throughput, more quick and more safety method of replace screen and drilling fluid recovery is more efficiency.

 

MONGOOSE double motion shale shaker

The double motion can form linear motion and balanced elliptical motion in one shale shake. SWACO company combine the balanced elliptical technology and linear motion technology to creatively produce the double motion locus shale shaker. The double motion function and special device, make MONGOOSE shale shaker can adapt to any land and offshore drilling condition,

VSM300 shale shaker

VSM300 shake shaker use multilayer screens, as the minimum screening area realize the biggest screening area. The up screen can protect the down more fine screen, the total area of screen is 5.6m2. When operation, only press the exciting force, the shale shaker can produce 4,6,8 the difference exciting force, so when operation, it need not stop shale shaker, we can also change the solid phase transportation rate, flow characteristic and phase quantity.

 

Compared with linear motion shale shaker, balanced elliptical shale shaker has the good adaptability, especially to fragile, slime stratum, Its advantage extrude. If reasonable collocate the two types shale shakers, we can obtain the best effect.



11Oct 2012

The choice of drilling fluid shale shakers

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Drilling fluid shale shaker is the first class of drilling fluid solid control equipment, and it is used in the whole drilling well process. The rang of eliminate the solid phase particles is decided by the type of screen, the throughput is related with the screen specification. The screen mesh is bigger, the throughput is smaller, the particles are removed are smaller, the removed particles are greater amount. From the production, hoping use the fine mesh screen, from the economic, the using time of the fine mesh screen is short, so the screen needs overall consideration.

The exploitation and popularize of the mechanical laminate screen and the chemical splice screen effectively improve the fine mesh life times and the purification level of drilling fluid shale shakers.

There are many combination types of the cascade screen, usually the sublayer have 12meshes, the upper use the 30, 40, 60 meshes. The drilling fluid shale shakers don’t use the 80 and more than 80 meshes screen, because the screen mesh is greater and the through sieve rate is lower, led to the screen life time is short.

In order to drilling fluid shale shakers are matching with the drilling machine, we must consider the maximum discharge of the drilling pump and the number of drilling cuttings which are produced in the drilling process, as Qscreen＞Qpump+Qcuttings

Qscreen—the throughput of the drilling fluid shale shakers, L/S: Qpump—the maximum discharge of the drilling pump, L/S;q Qcuttings—the cuttings volume in the drilling well.

Because the different drilling machine have the different rotation speed, the drilling cuttings in the unit time to the pump displacement is small, drilling fluid shale shakers use the duplex or trigeminy. So Q screen＝Qpump n

To the duplex shale shakers, when replace the screen, must have a single screen stop working, the other single screen must can dispose the whole drilling fluid, so to the duplex screen, n＝2. When the trigrminy shale shaker works, must have two single screen dispose the whole drilling fluid, so to the trigrminy, n＝3/2.

Now the throughput of the drilling fluid single screen is 40-50L/s.In conclusion, we can obtain the shale shakes’ using methods. In the early day drilling, the diameter of the well is big, the pump discharge is big, the mechanical drilling speed is high, producing a lot of big particles solid phase, the drilling cuttings volume is big, we should use the small mesh screen to dispose the drilling fluid. Following the increase of the drilling depth , the diameter of the well is small, the pump discharge is small, the drilling machine speed is low, producing a lot of small particles solid phase, the drilling cuttings volume is small, we should use the bigger mesh screen to dispose the drilling fluid.

29Sep 2012

The technological process and matching of shale shakers

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In the process of drilling, the drilling cuttings are produced in the bottom well are carried to the ground by drilling fluid, drilling fluid shale shaker is the fastest, biggest and earliest solid control equipment which remove the drilling cuttings, it is the necessary the first process equipment. The engineering level of shale shaker is mainly reaction in the ability of throughput, the reasonable of working, the length of using life, operation and maintenance.

The situation of size of drilling fluid particles, content viscosity and the performance are non changed, the dynamic shear is bigger of drilling fluid solid phase particles, the take off resistance of solid phase particles, the migration speed of solid phase is getting smaller. The theoretical research of foreign drilling fluid shale shaker is fully realize it, drilling fluid flow out from the drilling separator, before enter into the shale shaker screen, setting a drilling fluid impact tank, preventing the drilling fluid directly impact the screen, maximum decrease the shear stress which the drilling fluid return from the well month, not only the stress of solid phase and the motion are reasonable, but also decrease the status of drilling fluid runs and emits and increase the throughput of the drilling fluid, extend using life of the screen.

In recent years, the domestic shale shaker has a great improve, especially in theoretical reach, such as the movement locus of shale shaker and the using life of shale shaker have already reach or approach the word advanced level. But the research in domestic shale shakers don’t attention the importance function of drilling fluid impact tank in shale shaker,  when we choose drilling fluid shale shakers, we must choose the structure shale shakers

In addition, because the material, processing technic, working accuracy and the matching use of the common equipment are different, make the products actually reach the technology performance has a great distinguish. So we choose drilling fluid shale shakers, we must detail know the material, processing technic, working accuracy and the matching use of common equipment instead of the show technical index to choose.

24Sep 2012

Introduction of king cobra venom shaker

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The modular design and standardized platform of the King Cobra Venom Shale shaker offers a wide range of options to meet many rig designs.

The national oil well Varco Cobra shaker utilizes three pretension screens and linear motion to remove detrimental drilled solids from the mud system. This allows the Cobra shale shaker to minimize mud losses while enhancing cuttings dryness. Maintenance on the Cobra shaker is minimal and only a small inventory of replacement parts is necessary to sustain optimal operation. Additionally the shaker’s rugged design offers years of reliable operation.

The Cobra PMD shaker screen is the special screen type. Many shaker screen producers won’t produce them. But some manufacturers will make such goods according to users’ demand.

All this kinds shaker screen, we promise will offer the best price by the good quality in
china! We have confidence that you will satisfy with our products and service. We promise that all our products are made of top quality materials. Above items are just a part, many more Cisco products are not listed out, please feel free contact us for more details. Thank you for your attention

20Sep 2012

Well drilling mud Chinese shale shaker screen

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The importance of the screen

The combination property of the drilling fluid shale shaker reflect the sieve size is fine, using life is long and the throughput is big, this conditions are related to the structure and performance of the screen. The screen is a important part of screening task, it is the consumables in drilling fluid, the size of the hole determines the size of the solid phase particles are removed by the shale shaker. Because drilling fluid have corrosive, abrasive resistance and the high temperature,

The specification of the screen

The specification of the screen determines the sieve size, the sieve size is the size of the sieve pore which the particles can pass. Because the oilfield and the related industries learn from the foreign stander, so use the mesh representative the size of the sieve pores, it is said that the number of the sieve pores in one inch width.

For different drilling mud equipments manufacturer will hold their own model

In order to remove the smaller particles in drilling fluid, the material of the screen is the stainless steel wires of the heat treatment, the material of the ancillary shoring structure is steel plate, galvanized sheet, plastic board and ect.

shale shakers. Different type shale shaker will hold different features and superiority.

To develop both precise and accurate process control, DC conducted a battery of tests. These tests included; cure tests by varying time and temperature; bonding strength tests by testing the tensile strength of the cure screens through destructive testing; and chemical exposure tests by immersing a series of screens in chemicals characteristic of the oil & gas industry.

 

20Sep 2012

Solid control- DC linear motion shale shaker

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The liner motion shale shaker have the performance of the high screening precision, simple structure, less energy consumption, low cost, low noise, the using life of the screen is long, good sealing and convenient to maintain. The product is widely used chemical, food, plastic, medical, metallurgy, glass, fire-resistance, grain, fertilizer, ceramic ect. industry,

SHALE SHAKER PARAMETERS

TYPE DCS585-3/4 DCS630-3 DCS700-3/4 DCS830-2/3
Shake Locus linear type or ellipse type
Motor Power 2×1.5/1.72KW 2×1.5KW 2×1.5/1.72KW 2×1.3/1.72KW
Shake Strength ≤7.0G
Amplitude 5~6mm
Thruput Per Screen 100/130 m3/h 440/572GPM 120 m3/h 528GPM 110/130 m3/h 440/572GPM 80/130 m3/h 352/528GPM
Angle Of Screen -1°~5°
Motor frequency and voltage 380V/50HZ(Foreign custom motor according to customer requirements)
Screen Area 2/2.73 m2 2.36m2 2.2/2.94m2 1.8/2.7m2
Screen Specification 585×1165mm (40~250) 630×1250mm (40~250) 700×1050mm (40~250) 830×1080mm (40~250)
Remarks The proportion of thruput per screen in the total amount is:1.2g/cm3，the viscosity is:45s

     

Shale shaker is the first phase cleaning equipment in a complete solids control system. Shale shaker is mainly used to remove the drilling cuttings return to the ground from wellhead, so as to meet the basic requirements of the next equipment in the oil drilling.

Features of all  model DCS Linear Motion Shale Shakers

     *Explosion and Non-explosion proof electrical

*systems for 50 or 60 hz.

*Deck angle adjustable during operation from –2 ½ to +5 degrees.

*Pretensioned screens with wedge fastening (optional hook strap)

*High G-Force of 2 – 8.5 G provides dry solids discharge.

*Simple design without a gear box, hydraulics, pneumatics, oiling system or belts.

*Unique feeder assembly that presents fluid to the scalping screens as a uniform, low-           impact curtain. Feeder easily can be configured into a variety of connection points for installations with limited space.

*Customized Shaker Dimensions, including size of possum belly, weir height and   overall shaker width, length and height are available.

*Fluid distribution designed to utilize all available screen area, regardless of drilling conditions

*Available in common power supply configurations to meet all applicable global electrical standards