Drilling equipments Company

The TBM construction and Pipe Jacking construction drilling will generate a lot of waste water slurry which contains big percentage of sand and stones. In order to accordance with environment protection regulations and save water, project operators have to separate the TBM drilling mud, to reduce the waste and reuse the water.

GN Solids Control can design and make full package of waste water slurry separation plants. The major separation equipment in GN slurry separation plant includes: shale shaker, desander, desilter, bottom drying shaker, etc… And there are accessory items for a one-stop turn-key solution: centrifugal pump for feeding desander / desilter mud cleaner, mud tank, electrical control system, etc.

The TBM construction and Pipe Jacking construction drilling are often took in urban areas, . In this case, the TBM drilling slurry separation usually requires compact design to suit for small working area. And the TBM drilling slurry separation need to reach high treatment efficiency to treat big volume slurry. GN Solids Control TBM Slurry Separation Plant is specially designed to meet the above demands. GN Solids Control TBM and Pipe Jacking drilling slurry separation system is with a very compact foundation by optimal designing. The TBM and pipe Jacking slurry treating system can work at different height levels.

In order to meet the different requirements of different clients and different projects, clients can choose more than a set GN Solids Control TBM Slurry Separation Plant and connect them by pipelines to use them as a big flow rate handling capacity. Plus, the combination of standard modular is for fast and easy assembly. Clients can choose different modules and select the quality they need to reach the flow rate they want to reach. GN Solids Control TMB and Pipe Jacking Slurry Separation Plant to move conveniently among different work sites.

GN Solids Control TBM and Pile Jacking Slurry Separation Plant advantages:
1) Full function compact package design for One -stop Turnkey Solutions
2) Modular, pre-assembled and small footprint units for easy and fast transportation from one location to another
3) 5-Phase Separation System for finer solids separation and to get more clear water

GNSB Series Centrifugal pump is a very common device used at drilling mud solids control system. GNSB Series Centrifugal pump can be used for oil field drilling mud system, HDD and CBM drilling mud recycling system, piling and micro tunneling desanding plant. GN Solids Control is a professional manufacturer of centrifugal pump in China.

GN Solids Control makes and supply centrifugal pump for solids control system. There is a wide range of applications of centrifugal pump in various applications drilling mud system. Below are some of the applications we normal use.

1. GNSB Series Centrifugal pump can be used as trip pump in the trip tank of the oil and gas drilling mud system. Trip tank is normally the first tank compartment inside drilling mud solids control system. The tank volume of trip tank is not big. It can be a separate smaller size tank other other tanks in the solids control system. It can also a compartment divided from shale shaker tank. Centrifugal pump size 3×2 or 4×3 are mostly used as trip tank trip pump.

2. GNSB Series Centrifugal pump can be used as feed pump for desander, desilter, mud cleaner. The pump transfer capacity should be matching the handling capacity of desander, desilter and mud cleaner. It can be a little big higher than the separation equipment, but it cannot be too much high. And the centrifugal pump transfer capacity cannot be lower than the separation equipment.

3. GNSB Series Centrifugal pump can be used as mixing pump of jet mud mixer and mixing unit. While add a T-pipe at the outlet of the mixing pump, the same pump can also be used as transfer pump.

4. GNSB Series Centrifugal pump can be used as transfer pump to transfer drilling mud or other slurries from one tank to another, or from one location to another.

5. GNSB Series Centrifugal pump can be used as suction or supercharging pump for drilling rig mud pump.

All GN model centrifugal pump use tungsten carbide mechanical seal, with international famous brand Bearing. And spare parts interchangeable with most of the international Brand pump which helps customer to source spare parts easily. Open impeller design that lowers axial thrust loads, and make it easier for installation, repair and maintenance.

 

GN Solids Control is focusing on the full package of drilling mud processing system. As GN Solids Control makes full line drilling mud processing equipment. They know well about the equipment. GN Solids Control can offer professional proposal of drilling mud treatment system and mud mixing unit. All processing equipment and the tank volume should be match to each other.

For example, if the total shale capacity is max. 160m3/4 or 200m3/h, but the desilter and desilter capacity is 240m3/h. And feeding centrifugal pump and mixing pump are 55kw or above. The system is not reasonable. As the 1rst stage separation equipment, the shale shaker capacity should be bigger than the next step separation equipment. Otherwise, if the mud flow is big, the shale shaker will overflow. Or if the mud flow is small for the shale shaker to handle, but the desander and desilter pump are too big, it will cause pump suction air. And the hydrocyclone separation performance is not good in condition the feed flow is too small. The client need to increase shale shaker capacity, or decrease pump and mud cleaner capacity to suit for the mud pump capacity.

Every jobsite is different. Every client has his preferable. In order to offer a suitable mud system design to suit for the job site situation, as well as client’s special requirements. Below are some questions to let GN Solids Control knows more about clients request.

1) what is the rig horse power of the system for, or what is the mud pump horse power or capacity? The whole mud system handle capacity should suit to the mud pump capacity.
2) What is the total tank volume the client prefer?
3) How many tanks the client prefer?
4) What is the max. Tank size (L × W × H) the client can accept to suit for their local shipping regulations?
5) What processing equipment they prefer to equip inside the system? Shale shaker, mud cleaner, desilter, desilter, mud cleaner, vacuum degasser, decanter centrifuge, etc..Which processing equipment they want?
6) What is the Voltage and hz for the mud system?
7) What is the explosion proof standard, CNEX, ATEX, or international IECEx standard?
8) Additional requirement and any special requirements if there, like do they want trip tank, pill tank, water tank, etc…

Many clients do not know how to choose the right model solids control and drilling waste management equipment to suit for their projects. Below are some comments and suggests from GN Solids Control to help clients make decision. For more assistance, clients can contact GN Solids sales engineers.

1. Shaker screen. To ensure accurate cut point, clients must to choose replacement shaker screens which are confirmed to API RP13C. In order choose the right model replacement shaker screen, firstly clients need to confirmed the shaker model, once shaker model confirmed, screen size is known. And then based on the requested separation point to choose right API size. For different brand replacement shaker screen, the same API size screens are interchangeable.

2. High speed Decanter Centrifuge or low speed decanter centrifuge Package complete with feed pump, connection hoses and control panels.
GNLW363C fixed speed centrifuge is recommended as high speed and low speed operation. It is the most popular size 14 inch decanter centrifuge. Operators can change pulley and belt to get another fixed speed.
Fixed speed centrifuge is easy for operation and maintenance, and its cost is much lower than VFD centrifuge or FHD centrifuge.

3. Screw conveyor Auger transfer for drilling cuttings
GN Solids Control makes screw conveyor with auger diameter vary from 10″ 12’’ 14’’, 16’’ and 18’’. The auger body is equipped with grab wire for emergency stop.
Suggest clients to choose a size auger to min. spare parts stock.
GN augers are combined by standard length 12ft per section. 14” dia. with 36ft transfer length is recommended. You can remove the middle section to use it as 24ft, or add another middle section to use as 48ft.

4. Sludge transfer pump
GN Solids control have various types transfer pump. Clients should tell GN Solids Solids Control their request for model selection, like what is the material for transfer, mud, cuttings, solids, or others? What is the transfer capacity want to reach? What is the transfer length? GN Solids Control has submersible slurry pump, and vacuum pump for solids and sludge transfer, it is driven by air. Users should offer air supplier. It can be supplied by air compressor, or supply air from the rig site. GN Solids Control also makes centrifugal pump.

GN Solids Control is a mainly focusing on liquids and solids separation. GN Solids Control is capable to make waste water treatment system. GN Solids Control can make waste water treatment system to treat both oil slurry and non-oil slurry. The separation system for oil surry and non-oil slurry is not the same.

GNWTU-50A is a waste water treatment Unit specially design and made by GN Solids Control. The waste water treatment Unit is a special designed system for construction mud settlement, as well as for industrial waste water settlement. The maximum discharge rate of the GNWTU-50A waste water treatment Unit up to 50m3/h. It is a system designed to treat non-oil slurry.

GNWTU-50A waste water treatment Unit can be used for medium size sites such as civil engineering projects, or building project, like piling, and micro tunneling etc…

After the chemical dosing separation application, the suspended solids content can be below 50 mg/liter. In this case the treated water can be either discharged into the public drainage system or recycled for further use. The treated water can be reused of as drilling fluid, vehicular washing bays, recharge of wells, toilets, cube curing, ponding tests. This saves a lot of cost for water and protects the environment.

GNWTU-50B Wastewater Treatment Unit is a special designed system for oil water and solids separation system. Maximum discharge rate of GNWTU-50B Wastewater Treatment Unit can up to 50m3/h. GNWTU-50B Wastewater Treatment Unit is designed for industry waste water with suspended solids and free oil.

The chemically enhanced separation reduces the suspended solids content below 50 mg/liter and free oil to be below 10 mg/liter.

In this case the treated water can be either discharged into the public drainage system or recycled for further use. The treated water can be reused as drilling fluid, vehicular washing bays, recharge of wells, toilets, cube curing, ponding tests or industrial applications.

This saves a lot of cost for water and protect the environment.

GN Solids Control makes different sizes mud recycling and mud mixing system for HDD rigs, water well drilling rigs, etc… The popular size includes but not limited to 150GPM, 200GPM, 350GPM, 500GPM, 600GPM, 750GPM, 1000GPM, etc…

GN Solids Control makes different sizes and customized design mud recycling and mud mixing system to suit for clients request.

For example, a client contact GN to inquire a customized water well drilling mud cycling system for 500GPM ~ 1000GPM. The client want a customized mud recycling system equipped with 2 shale shakers, 2 desander mud cleaners, 1 desilter mud cleaner, 1 middle speed decanter centrifuge and the system should be complied with a mixing hopper and mixing pump unit.

The client wants both shale shakers and both desander mud cleaners should have the possibilty to use only one of them if client drill smaller borehole and uses smaller mud pump. GN Solids Control will equip valves at shale shaker distribution pipelines and desander inlet pipes to control the feeding. Clients can choose to use both or either.

2 shale shakers, 2 desanders, 1 desilter and centrifuge feed pump are located on #1 tank.
#1 mud tank will be divided into 3 compartments:
1.1 Both shale shakers feed the first tank.
1.2 Both desander mud cleaners feed the second tank.
1.3 Desilter mud cleaner will feed third tank. It is clean mud tank, Centrifuge feed pump sucks from desilter tank.

Decanter centrifuge, mixing hopper and mixing pump are located on the #2 mud tank.
#2 mud tank (for clean mud) will be divided in to 3 compartments:
2.1 decanter centrifuge tank, which suck mud from 1.3 desilter tank and feed the tank under it.
2.2 clean mud storage tank
2.3 mixing tank with hopper and mixing pump

Mud Agitators and feeding and transfer pumps will be located per needed and per payout.
Third pass to forth via liquid level height.

GN Solids Control is a professional manufacturer to make different sizes Solids Removal Variable Speed Centrifuge includes stand, feed pump and connecting hoses, and other processing equipment and accessory processing equipment before and after decanter centrifuge.

GN Solids Control makes Variable speed from 0 up to 4,000 RPM per different models. GN Solids Control is capacity to make both VFD control decanter centrifuge and full hydraulic drive (FHD) decanter centrifuge per meet clients’ request.
GN Solids Control brand decanter centrifuge is designed with high G-force to get a better separation performance.

GN Solids Control has big bowl decanter centrifuge vary from 18 inch to 22 inch, and max. to 30 inch for big fluid processing rate. In the world, few companies have the capability to make big bowl decanter centrifuge up to 30 inch. GN Solids Control is one of them who have the abilities.
GNLW553 VFD decanter centrifuge is a 22 inch bowl decanter.
GNLW453 VFD decanter centrifuge is a 18 inch decanter.
GNLW363 VFD decanter centrifuge is a 14 inch decanter.
Roughly, for the same conditions, 1 set 22inch decanter = 2 x 14 inch decanter centrifuge.

And 1 set 18 inch decanter = 1.4 x 14 inch decanter. The operators cannot expect to use an 18 inch decanter centrifuge to replace 2 x 14 inch decanter or to replace a 22 inch decanter.

GN Solids Control 14 inch, 18 inch and 22 inch decanter centrifuge can all be used for heavy mud solids control. And also some clients want to use the decanter centrifuge for different applications like for barite recovery, HGS (high gravity solids), LGS (low gravity solids), waste management, and dewatering treatment, or other different applications, the centrifuge features are not all the same. When GN Solids Control makes the design for standard models, GN Solids Control need to balance the performance for all the situations. If clients have fixed applications with the centrifuge, suggest clients to share the information to GN Solids Control sales engineer before order to get and best solution to suit for the projects and maximized the separation performance.

 

GNLW363 FHD centrifuge is a Full Hydraulic Drive decanter centrifuge. It is designed to remove low specific gravity solids from slurries. After the FHD centrifuge separation, the solids are removed and the liquid is returned for recirculation. Like in the drilling mud system, the recovered slurry is drilling fluids, it can be reused in drilling mud system, in waste water treatment system, the recovered slurry is water, which can be reused in the waste water treatment plant. And in some cases, like in the barite recovery treatment, the solids are returned to the active system and the liquid is discarded, or goes to further treatment processing.

GNLW363C-FHD decanter centrifuge is fully hydraulic drive. Th Full hydraulic driven system is imported from leading brand from Switzerland. The bowl speed and conveyer speed of GN FHD decanter centrifuge is adjustable within the permitted range. It can achieve independent, step-less and large-range speed regulation for the bowl and conveying. The bowl speed and conveyer speed during working is showing on the screen.

The advantage of the full hydraulic drive centrifuge is for use in high temperature ambient for heavy mud with flexible bowl and differential speed. The compact one skid design makes it easier for rig up.

GN FHD decanter centrifuge is composed of bowl assembly, collection box, hydraulic drive system, electrical control panel, drive motor, vibration switch (optional), case, base assembly, and skid.

During decanter centrifuge operation, drilling mud or slurry is pumped through the feed tube into the center of the rotating conveyor, where it splashes against the feed accelerator. Screw pump is widely used as feeding pump for decanter centrifuge, besides screw pump, centrifugal pump and submers. The high velocity slurry is then dispersed out four feed nozzles mounted in the periphery of the conveyor cylinder. Rotating at a higher speed than the conveyor, the bowl creates an additional shearing effect, which further increases the slurry’s acceleration. The depth of the slurry in the bowl (pond depth) is determined by the setting of weirs on the liquid bowl head (large end of the bowl).

Dual motion shale shaker is a kind of solids control drilling mud processing equipment. Shale shaker is the 1st stage solids control equipment to pre-treat drilling mud from drilling rigs. GNZS594F-SHBF is a Single Deck Dual Motion Shale Shaker. The shale shaker can be equipment with top weir feeder, or with back weir feeder.

GNZS594F-SHBF is a Dual Motion Shale Shaker. The shale shaker can work as Linear motion or Gradual elliptical motion. The working principle of dual motion is as below.

1) There are two vibrator motors mounted on the shale shaker, one of the vibrator motor can be adjusted manually. If the eccentricity is set to the eccentricity ratio we need, the forward and reverse excitation force of this vibrator will not change; the other’s eccentricity cannot be adjusted manually. The eccentricity ratio of forward and reverse is informed to the supplier in advance. The excitation force of this vibrator during forward rotation is exactly the same with the first one while it is only half of the first one when reverse rotating.

Generally speaking, the linear track motion is the opposite rotation of two vibrator motors; the gradual track motion is the same direction rotation of two vibrator motors.

When switching the two motion tracks at drilling site, it is necessary to wait until the shale shaker is completely stationary before switching through the button of the electric control panel. Before delivery from manufacture’s factory, the electric control cabinets will be equipped with function of shifting between dual motion shale shaker control and linear motion shale shaker control. The shale shkaker that has been delivered can realize track switching by adjusting the eccentric position and rotation direction of a vibrator.

Besides dual motion shale shaker, GN Solids Control can make linear motion shale shaker, mud cleaner, desander, desilter, decanter centrifuge and other solids control equipment.

GNSX-450 is a three phase decanter centrifuge. The bowl size of GNSX-450 three phase decanter centrifuge is 450mm (18 inch) diameter by 1800mm in length. It is designed for 24 hours continuous and smooth operation throughout the day. It is mainly composed of driving system, decanter bowl, and screw conveyor inside the bowl, cover box, skid and VFD control panel.

Working principle of GN Solids Control 3 phase decanter centrifuge

GN Solids Control 3 phase decanter centrifuge is mainly designed and made for liquid, liquid and solids separation. GN Solids Control 3 phase decanter centrifuge can also be applied to two immiscible liquids with different specific gravities. When the solids and liquid mixture (raw material before separation) rotates into the high-speed rotating bowl internal the 3 phase decanter centrifuge, the solids and liquid mixture rotates synchronously with the drum. As the reason of the different specific gravity, the centrifugal force of the solids and different liquid is different.

The solid particles which with the larger specific gravity are subjected to the greatest centrifugal force, followed by the heavy phase liquid (such as water) and the light phase liquid (such as oil). So the centrifugal force is becoming less from outside to inside according to the magnitude of centrifugal force. A concentric solid layer and two liquid layers are formed.

The Solids phase inside the mixture will be pushed out by the conveyor impeller of the centrifuge bowl, and liquids are removed from their respective nozzles depending on different gravities. As the reason, GN Solids Control three-phase decanter centrifuge can not only separate the solid from the solids and liquid mixture, but also separate the two-phase liquid with different specific gravity in the liquid and liquid mixture. In this case, Solid / liquid / liquid separation can be achieved.

Besides 3-phase decanter centrifuge for oil field and non-oil field, GN Solids Control has other separation equipment to cater for different application, like shale shaker, mud cleaner, desander, desilter, degasser, transfer pumps, drilling waste management equipment, etc…