Mud Solids Control Equipment

GN solids control developed a new product- mini shale shaker, model GNZS752. It can meet the requirement for the clients who do not need so large treating capacity, but want to find an economic way to separate big solids from the drilling fluids.

mini shale shaker

GNZS752 shale shaker with unit treating capacity 264gpm, 2 screen panels with total screen area 1.35m2, G-force 6.3G adjustable, total power of this shaker is only 1.0KW, and total weight 800 kgs. Based on these parameters, we called it mini shale shaker.

This linear motion shale shaker GNZS752 can be widely used in HDD, water well drilling , shadow drilling and other drillings which need small treating capacity. After the new mini shaker is developed, there are many clients showed their interests. Before they have to use bigger shaker 2-panel GNZS852 or even 3-panel GNZS703. These shakers can treat the drilling mud better because of their large treating capacity, but it is a waste of money.

Comparison between GNZS752 and Brandt mini Cobra 2-panel shaker

Motor power: Brandt mini Cobra is 1.1KW x 2 , GN mini shaker is 0.5KW x 2

Screen area: Brandt mini Cobra is 1.6m2, GN mini shaker is 1.35m2

Screen panel: Both of them are 2 panel

Screen type: pretension, repairable

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written by GN solids Control \\ tags: brandt mini Cobra, linear motion shale shaker, mini shale shaker, shaker screen

Many clients asked us this question, how to revert API To Micron for Shaker screen mesh，even most of shaker screens manufactures in China do not have this knowledge. Some manufacturers use the API number as mesh directly, this will be incorrect, if clients do not have professional knowledge, they will use the wrong mesh screens and can not get the ideal result.

Here we will introduce how to revert API To Micron for Shaker screen.

API shaker screen

This is a chart to show how to convert mesh to microns, to know how to convert microns( D100 separation), then to know how to convert mesh to API, or API to mesh, pls contact GN solids control.

We can produce replacement shaker screens for Derrick 500, Derrick 48-30, Kem-tron KTL48, Swaco Mongoose, Brandt King Cobra shaker screens.

written by GN solids Control \\ tags: API, Brandt Cobra screen, Derrick screen, mesh size, shaker screen, Swaco Mongoose shaker screen

Vibrating screen normally called shale shaker in oil and gas drilling industry. GN solids control produce vibrating screen machine and replacement screens for it.

Working principle of vibrating screen:

GN vibrating screen

By the motor force and adjusting the amplitude of the eccentric shaft, vibrating screen moves quickly like a circle. Materials in the sieve case can be saperated and screened from the sieve pore in this process.

Vibrating screen in Venezuela

We are seeking for a distributor in Venezuela to have some of our shaker screens in stock, the local market’s requirement is very large. If you are interested in GN distributor in Venezuela, and have large enough warehouse and good client’s network, pls contact GN solids control.

GN vibrating screen model:

By treating capacity:

80m3/h, 120m3/h, 150m3/h, 200m3/h

By vibration motion:

Linear motion and balanced elliptical motion

By screen panel qty

2-screen-panel, 3-panels, 4-panels

By location of buffer box( inlet method):

Top-buffer-box, back-buffer box

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written by GN solids Control \\ tags: shaker screen, shale shaker, vibrating motor, vibrating screen

GN solids control choose Italy Oli brand vibrating motor for all our shale shakers. Vibration motor is important components for shale shaker, I will introduce briefly about vibrating motor installation & maintenance.

1 How to install vibrating motor ?

shale shaker vibrator

 (1). Before installing vibrator, turn off and lock out/tag out all energy sources to mounting structure according to ANSI standards。

(2). If using a cutting torch or welding, test atmosphere for gas level or dust content.

(3). Make sure mounting surface is strong and flat, 0.25 mm acros vibrator feet. (This will minimize internal stress to vibrator casting when tightening mount bolts.

(4) Make sure mounting surface and vibrator are clean and free of debris, paint, and oxidation.

(5) Before installing vibrator onto mount, apply thread sealing compound to all bolts.

(6) After the vibrator has been operated for 10 to 20 minutes, check bolt torque. Tighten if necessary

2 How to  maintain  vibrating motor?

(1)Clean dust on shell regularly

(2)Before operating, must check the bolts to confirm whether there is loose or not. Otherwise, we must screw bolts tight before running shaker

(3) Inspect the cable, whether there is wear, hold down, crushing, etc.

(4) the vibration motor should be under good lubrication during operation:

Motors before fixed on shaker, the bearing is filled with SKF specific lubricate grease, the temperature range is -40 ~ 200℃

During running, every 2000 working hours user should makeup LGHP2 lubricate grease once. Every bearing can not be filled over 25.8g.

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written by GN solids Control \\ tags: mud cleaner, shaker screen, shale shaker, vibrating motor, vibration motor, vibrator

GNZS703 shale shaker is widely used for oil and gas drilling and directional drilling in the world.

1 shaker deck adjustment

A spring-loaded plunger and reversible pawl provide a ratcheting action during movement of the operating handle. A full 180 degrees of movement is possible in both directions. Depending on pawl setting, moving the handle in one direction turns the jack screw to raise or lower the screen frame, while in the other direction the jack screw remains stationary during handle movement. The spring-loaded pawl permits the operator to switch the direction to either raise or lower the screen frame, as required.The angle of the discharge end of the screen frame is infinitely adjustable within the equipment’s available range.

2 shale shaker maintenance

(1)Inspect discharge duct connection on side of hopper for leaks. Tighten connection and/or add silicone sealant to prevent leakage.

(2)Inspect cover on unused hopper discharge connection for leaks. Tighten connection and/or add silicone sealant to prevent leakage.

(3)Using a water hose, wash off accumulated process material from screen frame, interior of hopper and AWD angle adjustment components.

(4)Excess process material in these areas may impede angle adjustment of screen frame and can reduce screen frame vibration if the frame bottoms out on the buildup.

(5)Check for and remove any accumulation of process material or other obstruction in feeder interior. Feeder blockage may cause excessive splashing and uneven distribution of slurry onto the screen bed.

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written by GN solids Control \\ tags: BEM shale shaker, LMMC, LMSS, mud cleaner, shaker screen, shale shaker

GN new designed GNZS63-4 shale shaker is mainly used for drilling fluids separation for oilfiled drilling.

GNZS63-4 shale shaker

What consist of GNZS63-4 shale shaker?

Deck adjustment, vibration motor, shaker deck, base frame, support, baffle box, explosion proof starter, shaker screen, wedge plate, torsional spring ,etc.

Feature of GNZS63-4 shale shaker

(1). Adopt two sets same vibration motor take advantage of double motor in-phase principle, shaker deck makes linear motion vibration at 45°sling angle, some spare parts are interchangeable with other brand shale shaker

(2). Adopts high quality reliable vibration motor provides long time operation without any problem.

(3). Shaker screen can be flat type or pyramid one. According to drilling mud property the screen can be 10~200mesh

(4) Shaker screen will be tensioned by wedge plate, this is more convenient and easy for operation it is very reliable

(5) Shaker deck is adjustable, the adjustment is worm wheel and screw type. Beside shaker deck two sides middle shaft is connecting two worm, when we make adjustment the shaker deck will be consistent and in-phase

(6) The complete shaker body will be treated by sand-blast, paint it by anticorrosive painting so it is more anti-corrosive and better appearance.

Specs of GNZS63-4 shale shaker

1 Vibrating motor: 2 x1.94KW

2 Screen Area: 3.15㎡(33.9 sq ft)

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written by GN solids Control \\ tags: BEM shaker, drilling fluids, linear motion shale shaker, oilfield, shaker screen, shale shaker

GN designed a new patent linear motion shale shaker, GNZS70-3B. It is designed to replace the previous model GNZS70-3 shale shaker, which is found not so economic and practical before.

 Specification of GNZS70-3B shale shaker

1 Vibrating mode: Linear motion

2 Single deck shaker with 3 screen panels

shale shaker

3 Quick lock( wedge technology operation), which enables screen panel replacement in less than one minute. In drilling site operation, time is more important than money, so easy operation of screen replacement is necessary. It enables for an easy ratchet-type installation of the wedges, which eliminates hammer damage to the screens, as well as the paint on the sidewall of the shaker basket. You do not need any tensioning bolts or system, which can provide a small parts inventory, thus enabling cost savings to be realized.

4 Adjustable while drilling (AWD) mechanism enable faster and easier deck angle changes., adjusment from1 degree down hill to .5 degree up hill.

5 Weir height: Until now we still can not provide operational weir height, the weir height of previous model is 900mm, and for the new designed model is 750mm.

6 Available screen types, PWP(flat panel) and PMD(pyramid screen)

7 Available screen area: 29.6m2

8 Feeding method: optional from back or from top tank

9 Treating capacity: 600gpm

10 Vibrating motor: Italy Oli brand vibrating motor, explosion proof, 220V/380V 50HZ or 230V/460V, 60HZ， 3phase, protection class IP55.

11 With standard screen underflow sump

12 High G force, max 7.5G, and it is adjustable

13 All the link bolts are SS304 material

14 ISO and API certified

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written by GN solids Control \\ tags: BEM shaker, Derrick FLC503 shale shaker, drilling fluids, high G force, screen area, shaker screen, shale shaker

GN solids control can produce replacement screens for Brandt Cobra shale shaker, both steel frame screen and pyramid screen.

Why people want Pyramid Brandt Cobra shaker screens?

A   Exclusive benefits of pyramid screen technology

1 Increased shaker capacity

2 makes fine separations

Brandt Cobra screen

3 drier drilling cuttings

4 Enhanced permeability

B    Steel frame screen is constructed with two or three stainless steel layers bonded tightly to the steel frame. The frame is made of high-strength square steel tube or flat steel welded to multi- ribbed construction. These layers are coupled with the frame through metal backing plate or bonded straightly as well.

Advantages of steel frame screens

1 Using wedge-shaped fastening technology, to save screen changing time and less shaker spare parts cost

2 High strength frame, multi-ribs and the mesh cloth with moderate tension, from one reliable combination, which can increase screen’s acceptable flow, the intensity and the lifetime.

 If we combine the two type screens together , pyramid screen became the complementary of the original steel frame screen. For example, the total non-blanked screen area is increased by using pyramid technology but it still remain stable steel frame.

 Calculation of total non-blanked area for a panel screen

1 Measure the length and width of a panel opening with a dial or digital calliper to the nearest mm.

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written by GN solids Control \\ tags: PMD screen, PTC screen, pyramid screen, shaker screen, steel frame screen

GN designed some new models shale shaker in 2011, all of them are BEM shaker with 3 screen panel, the shaker screen dimension is larger than Derrick FLC 500 & 2000 series shaker, even 3 panel screen area is larger than Derrick 4 panel screen area.

The new designed shale shaker is according to API standard of design procedure,GNPS70-3,GNPS85-3 all matched standard oilfield solids control mud tank.

shale shaker

API standard design procedure of shale shaker

1 Shale shakers skids shall be level.

2 Shakers shall be rigged with adequate space, walkways and handrails to permit easy and safe servicing.

3 if the shaker is equipped with a rear tank, the flow line shall enter the rear tank as near the bottom as possible.

4 A means of diverting fluid from the flow line is recommended to permit the disposal of cement, spotting fluids, contaminated fluids, etc, before these fluids reach the shale shaker. The procedure shall not be used to dump the rear tank into the sand trap before trips.

operation procedure of shale shaker

1 The screens shall be inspected every time circulation is interrupted.

2 Use the shaker screens with the smallest openings that do not cause excessive drilling fluid loss.

3 Under normal operating conditions and when using a single-deck shaker with multiple screens, all screens shall have the same API designation.

4 Torn or damaged screens shall be replaced or repaired promptly.

  e.g.GNZS63-3 shale shaker use wedge technology, it is easy to change and install Brandt Cobra shaker screen.

GNZS83-3 shale shaker use tension bolts to install screens.

5 When using shaker screens that need tensioning, tension shall be checked 15 min to 30 min after installation and tourly thereafter.

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written by GN solids Control \\ tags: API standard, BEM shaker, Derrick shaker, pyramid screen, screen area, shaker screen, shale shaker

After operating the solids control system with the working of the drilling, to save cost, lengthen the life of shaker screen is very important, the essential thing is an active screen maintance program.
Screen panel flexing caused by dirty, missing or worn deck rubbers. Clean dirty deck rubbers or replace missing or worn deck rubbers. Always change all deck rubbers in the affected section of the shaker.

OLD WAY TO CLEAN SHAKER SCREEN
Remove any solids that become adhered to the screen cloth. Use a water hose or pressure washer to clean screens. NEVER clean screens with a wire brush. If screens become blinded with near size particles it is best to remove and wash with a pressure washer from the back side. Always clean screens if the shaker will be idle for a long period of time. Mud and cuttings that are allowed to dry on screens will eventually lead to premature failure. Continue reading »

written by admin \\ tags: clean shaker screen, screen machine, shaker screen