GN Solids Control makes high quality Vertical Centrifuge Cuttings dryer (VCD) System, which is widely used for oil and gas drilling rigs for drilling mud and drilling cuttings treatment. It is specially suits for oil base mud and oilbase cuttings treatment. For water base mud and cuttings, high G drying shaker is normally been used.

Below are some benefits of GN Solids Control Vertical Centrifuge Cuttings dryer (VCD) System:
1) GN Solids Control Vertical Centrifuge cuttings dryer (VCD) System can Maximize OBM recovery from drilled cutting for re-use.
2) GN Solids Control Vertical Centrifuge cuttings dryer (VCD) System can reduce the oil retention on discarded solids (OOC%, percentage of oil on cuttings) to less than 5% by weight.
3) GN Solids Control Vertical Centrifuge cuttings dryer (VCD) System can reduce the required cutting skips no.
4) GN Solids Control Vertical Centrifuge cuttings dryer (VCD) System can reduce final discarded solids volume.
5) GN Solids Control Vertical Centrifuge cuttings dryer (VCD) System can convert drilled OBM cutting into dry discarded solids due to high centrifugal force generated.

Besides Vertical Centrifuge cuttings dryer system, GN Solids Control makes full line drilling mud solids control equipment, drilling waste management equipment, as well as full package mud treatment system. Below is the major processing equipment and system GN Solids Control can make, but GN Solids Control production line is not only limited to below products:

Solids Control Equipment: Shale Shaker, Mud Cleaner, Desander, Desilter, Centrifuge, Mud Agitator, Mixing Hopper, Flare Igniter, Centrifugal Pump, Degassers etc.

Drilling Waste Management: Vertical Cuttings Dryer, High G Drying Shale Shaker, Waste Decanter Centrifuge, Dewatering Unit, Screw Conveyor, Screw Pump, Drilling cuttings Solidification Unit etc.

Full package Mud System: Oil Drilling Solids Control System, HDD and CBM drilling mud recycling system, Bored Pile and TBM slurry separation system, drilling waste management system, mining and industry solids and liquid separation system, Dredging slurry separation system.

GN Solids Control sludge Vacuum Pump is capable to be used at on shore drilling rigs and offshore drilling rigs. As the screen vacuum unit is 100% powered by air, there is no electrical components involved in the unit, it can suits for hazardous areas for zone 0, zone 1 and zone 2 applications. With special structure design, GN Solids Control sludge Vacuum Pump can be used at tough environmental for solids transfer．

GN Solids Control sludge Vacuum Pump has features of high working performance and less maintenance. GN Solids Control sludge Vacuum Pump can transfer material (liquid, slurry, and solids) with high gravity and high density, solids content max. up to 80%. GN Solids Control sludge Vacuum Pump is especially suitable for offshore drilling platform. As the offshore drilling platform has higher request for explosion proof standard. As the pump is 100% driven by air, as the limitation of air compressor, the flow rate of vacuum pump is not big. Group Pumps of combination of 2 or 4 or more vacuum pumps are available for higher flowrate, with just one suction and one discharge.

Besides sludge Vacuum Pump, GN Solids Control can offer another equipment with vacuum technology, it is vacuum screen unit. Most of the big drilling rigs are using 3 ~ 4 shale shakers and probably another additional shale shaker as a Mud Cleaner with Desander & Desilter on top. 1 set GN screen vacuum unit can be connected to max. 3 sets shale shaker, but driving by only a set air compressor. If operators want 2 shale shakers to use GN vacuum screen technology, they only need 1 vacuum screen unit, and they will need 2 catch pans under the outside screen of the 2 shale shakers. If clients want 4 shale shakers or totally the 6 shale shakers to use GN screen vacuum unit technology, they will need to use 2 units. And each shale shaker connected to GN screen vacuum unit should be equipped a catch pan.

Mud shear hopper system is used to prepare and mixing new qualified drilling fluids for drilling activities. GN Solids Control is capacity to make standard and customized mud mixing and shearing system to suit for different clients and jobs applications.

GN Solids Control can make electrical motor driven mud mixing and shearing system, as well as the diesel engine driving mud shearing and mixing system. Both the electrical driven and diesel engine driven system are explosion proof standard to suit for hazardous applications for zone 1 and zone 2 applications. And also GN Solids Control mud mixing and shearing system is design and made to applied with DNV2.7-1 lifting standard to suit for offshore applications.

GN Solids Control mud shearing hopper system is composed of mixing tank, walkways and handrails, Ex-proof diesel engine driven unit, stainless steel shearing hopper and pipelines, all components and items are allocated in a skid with compact structure and reasonable layout. It is easy to install and disassembly.

Working Procedure of GN diesel driven shearing hopper system is below:
A centrifugal pump is driven by Ex-proof diesel engine as feeding pump, it is used to convey drilling fluid to be mixed in mixing tank. And drilling fluid is sucked from tank to shearing hopper by diesel engine. Chemicals to be added to drilling fluids are fed from top of hopper, and well mixed fluid falls into tank, and to be re-used via pipelines connected per client’s jobsite design.

Clients can use the T-pipe at mixing pump inlet and jet hopper outlet for proportioning the fluids in tanks or from outside per jobsite requests.

100hp is the most popular size of diesel engine driven shearing hopper system. Below are the features of the diesel engine driven shearing hopper system:
1) The shearing hopper and piping material can be 316/316L stainless steel to suit for chemicals.
2) Diesel Engineer power is 100hp explosion proof standard for zone 1 applications.
3) Sparking arrestor is equipped in the diesel engine driven system.
4) Driven pump type is centrifugal pump with different sizes for optional.
5) Suction hose and Discharge Hose can be offered as required in length and to fit all rig connections.
6) Mixing tank can be 50bbls, or other sizes per clients’ request.

GN Solids Control makes vacuum type degasser and centrifugal type degasser for oil and gas drilling mud solids control system.

GNLCQ300A centrifugal degasser is a new type degasser. The centrifugal degasser is designed to treat gas cut drilling mud in solids control system. Normally the degasser is used after shale shaker. It is widely used in various solids control system, and it is very important for recovering mud weight, stabilize mud viscosity performance, reduce drilling cost.

GNZCQ Vacuum Degasser is a special-purpose deviceto treat gas in the drilling fluids. Vacuum Degasser can remove various gas invasive in drilling mud quickly. Vacuum degasser is very important for returning mud gravity, stabilizing mud viscosity and reducing drilling cost. Also, also, the vacuum degasser can be used as a heavy-duty agitating device. Vacuum degasser is widely used in all types of mud circulation and purification system. GN vaccum degasser is with a compact design. And it is able to achieve an effective gas liquid separation.

This week, a client is going to issue orders to buy GN Vacuum Degasser. They are interested in the Model GNZCQ270B for processing capacity 1200GPM. They prefer GN vacuum degasser. As GN Vacuum Degasser is a self-contained unit. The unit is no need feeding pump.

But they have question especially for the self-feeding pump data & NPSH of the pump. Because the suction line the client will be use will be a 5 m horizontal pipe with 2 ea elbow 90 degree from the suction point to vacuum degasser equipment.
The pump in vacuum degasser is vacuum type pump with Negative pressure.  NPSH is net positive suction head. NPSH is not applicable for vacuum pump.

GN Solids Control confirms the client that, GNZCQ270B can meet the client’s situation: suction line will be 5m horizontal pipe with 2 elbow 90 degree from the suction point to vacuum degasser equipment. But lifting distance (from liquid surface to pump) should be less than 2.5m.

Shale shaker is first stage solids control equipment in drilling mud purification and recycling system. Shale shaker separator is also known as the major solids control equipment in drilling mud system. The performance of the shale shaker has big affection on performance of the entire solids control system.

A batch of shale shaker separators has been ready for shipment last week. The shale shakers are ordered for a Russian client for their oil rig mud system. The shale shakers will be used to replace the old shale shakers in the client’s old drilling mud solids control system.

The shale shaker model for the project is the most hot sale 4-panel shale shaker. The shale shaker is equipped with high quality composite frame pretension screens. The composite frame pretension shale shaker screens are designed and made by the shaker manufacturer – GN Solids Control. It gives clients more benefits. As shale shaker screen is the most cost wearing spare parts for shale shakers, and even the most cost much wearing spare parts for drilling mud solids control recycling system. As GN Solids Control are both the shale shaker original manufacturer and the shale shaker screen manufacturer, clients can get better price supporting for shale shaker screens from GN Solids Control.

The composite frame pretension shale shaker screens can enable the shale shaker have a better and more reliable separation performance and longer screen servicing time under high temperature drilling mud.

The composite frame pretension shale shaker screens are mounted by wedges. Unlike fixing screens by bolts, the wedge type is for easy operation. It helps the shale shaker operators to change replacement screens fast and easier.

Another advantages of GN shale shaker screen is that, the shaker deck angle changing system is Synchronous lifting adjustment. Synchronous lifting adjustment for shaker deck screw is GN patent design. The operators do not need to stop the shale shaker, but they can change shale shaker deck angle during the shaker is running. And when the operators change shaker deck angle from either side of the shale shaker deck, both side angle change be lift or fall on the exact same degree. It saves time. Time is money for activities.

Mud agitator is designed to agitating the drilling fluids in mud tanks. Mud agitator is composed of motor, gearbox reducer, shaft and impeller. It is a high efficiency unit for mud mixing in solids control mud system. GN Solids Control offers all sizes of drilling mud agitators for different sizes and functional mud tanks, like shale shaker tank (slope tank), suction tank, mixing tank, storage tank, pill tank, water tank, trip tank, marine tank, etc…Both horizontal and vertical type drilling mud agitator are available.

According to the design type of gearbox reduce, there are 2 major types of mud agitator:
1) Worm and gearbox reducer mud agitator. This type agitator is with compact design and smaller footprint. Its cost is lower but the efficiency is less.
2) Helical bevel gearbox reducer mud agitator. It is heavy duty type. This type agitator is with a bigger footprint for the same horse power motor but with much higher stir efficiency than worm gearbox type. Its cost is higher.

In order to choose the right model of mud agitator of the mud tanks, below information is requested before ordering agitators:
1) The dimension of the mud tank (L×W×H).
2) The weight of the drilling mud
3) Voltage of the the power supply for driven motors
4) Impeller type: canted blade type or flat blade type. Mostly it is canted blade impellers. The canted blade impeller is better stir performance compared with flat blade impeller.
5) Number of mud agitators requested for the sizing mud tank.
6) Required TOR. TOR means the turn over rate.

The TOR is the number of seconds required for the impeller to pump the full volume within the sizing area. Remember that a lower TOR indicates more agitation because the tank turns over in fewer seconds. TOR should be in the range of 35 to 90 seconds for all “sizing areas”. Although, for the suction tank, it should have a TOR closer to 90 (less agitation) to prevent aeration.

After weeks hard working together with Australia engineering team, GN Solids Control finished the design and fabrication of a set of special drilling mud treatment system to a well-known drilling company in Papua New Guinea. The most special point of the drilling mud solid control system is that the entire mud system will be chartered to Papua New Guinea by airplane, including tanks, all separation equipment, and mud gas separator package.

As the oil field is located at very remote areas, there are no normal roads leading to the oilfield. As a full package mud treatment system composed of full line drilling mud solid control equipment, and mud tanks, and all the items must be shipped by air plane, the workload and difficulty of work can be imagined.

The mud system is composed of 6 mud tanks for sufficient tank volume and to support bigger handling capacity.
In the mud recovery system, two drilling fluid shale shakers and one mud cleaner are equipped for the separation of coarse cuttings and sand. After three-stage separation, most of the harmful solids will be removed, so that the drilling mud can be reused. According to the different function and tank volume, totally 18 mud agitators were installed on 6 tanks. The function of the centrifugal pumps is to transfer the mud in the system from a mud chamber to a subsequent purification equipment, such as to desiander and desilter separators.

In order to ensure the aggravation of mud and the need of slurry blending, the system adopts the design of double jet mud mixer: two mixing pumps are connected in parallel. In condition that any mixed pump is overhauled, the other one can still work. The system is also equipped with a mud gas separator, which can separate and release the combustible gas invading the drilling mud to avoid blowout.

Papua New Guinea is one of the countries with the most stringent manufacturing and assembly standards for solid control systems in the world. In the process of designing and manufacturing the system, GN Solids Control faced with two main challenges: one is the electrical cables. During the work, all operating procedures need to be completed in accordance with Papua New Guinea standards. As GN Solids Control completed some projects in the area to accumulating a lot of experience, this work can be carried out smoothly. Another challenge is that each module needs to be controlled within a strict weight range to ensure the safety of helicopter hoisting operations, which requires all items design must calculate the weight very carefully to avoid overweight.

GN Solids Control has experience for both FHD and VFD decanter centrifuge for +55C degree in high ambient area, like middle east and Africa. But many clients do not know how to choose the VFD centrifuge or FHD centrifuge to suit for their projects.

Generally speaking, if clients accept longer delivery time and higher price, but wants reliability and easy operation, they will choose FHD. Otherwise they will choose VFD.

1) 14 inch and 18 inch Decanter Centrifuge:

FHD decanter centrifuge is more reliable for unstable power supply or poor power supply, since it’s one skid, it’s fewer footprints and it’s easy for transportation from rig to rig.

And FHD decanter centrifuge is easy for maintenance and operation, more mechanical staff. But FHD decanter centrifuge price is higher than VFD centrifuge, and the delivery time is longer.

VFD Centrifuge price is lower than FHD centrifuge. But VFD centrifuge needs to have A/C cooling system, for cooling VFD drives, and VFD centrifuge needs protection devices for poor power supply.

VFD centrifuge is PLC and HMI controlled, which needs more experienced people to set up the parameters.

2) 22 inch Decanter Centrifuge

22 inch Centrifuge can be FHD, but few company make the 22 inch bowl FHD centrifuge. All manufactures are providing VFD control for 22 inch big bowl centrifuge.

The reason is that, for 22 inch FHD centrifuge, even the operators use FHD control, they will need soft start or VFD starter for the big motors of the big bowl centrifuge.

So the hydraulic drive package will be on a separate skid. This means, both FHD and VFD of 22 inch decanter centrifuges are two skids.

And the price of FHD is much higher than VFD. And moreover, the 22 inch big bowl normally used for offshore projects which is not moving frequently.

So for the 22 inch decanter centrifuge, the available option is VFD drive not FHD.

Decanter centrifuge is the major separation equipment for oil sludge treatment. Chemical dosing dewatering unit is usually used together with decanter centrifuges for flocculent and to remove the ultra-fine solids.

But in some cases, the clients do not need dewatering unit for chemical dosing. Recently, GN Solids Control followed up a project that the client said tor the dewatering unit they don’t think we need it for their project as the out coming water from the separator will be stored in an open pit and exposed to the sun to be naturally evaporated. Also the containerized 3-tank automatic chemical dosing system is not needed for the project. The client wants to choose separation equipment between the 3 Phase Separation Disc centrifuge Separator, or 14 inch (360mm) Decanter Centrifuge. They want to know what are the main differences between the two machines?

GN Solids Control makes both 2-phase and 3-phase 14 inch (360mm) Decanter Centrifuge separation unit. After 2-phase decanter centrifuge separation, the outputs are soil and liquid mixture.
After 3-phase decanter centrifuge, the outputs will be oil, water and soil.
The maximum solids control in the liquid for feeding to Disc centrifuge is less than 2%.
The maximum solids control in the liquid for feeding to 2-phase decanter centrifuge is less than 20%.
The maximum solids control in the liquid for feeding to 3-phase decanter centrifuge is less than 10%.
The maximum solids size allowable for all above centrifuge models are 20mm.

The client want GN Solids Control to suggest them which centrifuge separation does GN think is more suitable for their project. Per their oil sludge situation, the 3-phase decanter centrifuge can suit for the project.
And what is the capacity of the generator the client need to use to run the 14inch (360mm) Decanter Centrifuge?
And also they want to know is it possible to have 14 inch (360mm) Decanter Centrifuge inside container and on skid mounted so that we can only see the inlet and the three outlets.

GN Solids Control make heavy duty telescopic skid. The skid can be lower down to less than 2.5m for shipment and lift up to 2.8m during working for liquid flow to other places by gravity.

Recently, a customer contacted GN Solids Control to ask for a quote for the air driven vacuum transfer pump system GNSP-40B.

To ensure clients make right decision and choose the right equipment type and model. GN Solids Control sales manager communicate more information in this regards.

Below are some questions GN Solids Control asked to the client:

What material you want to transfer? What is the transfer capacity and transfer distance you need to reach? The max. suction distance of GN solids vacuum pump can up to max. 50m, it is for horizontal transfer. The vertical lifting head is max. 7~8m.
GNSP-40B is a solids and sludge vacuum pump. It can apply for various applications in different industries, like to transfer drilling cuttings, solids and sludge. GN Solids Control has 3 vacuum pump models, GNSP-40B is the biggest model. GN Solids Control has middle size GNSP-20P, and a small size GNSP-10B. The middle size and small size are both portable design with tyres for easy movement. As there is no electrical parts and 100% driven by air, it requests big air consumption.

Take GNSP-40B for example, it request air supply 17m³/min with pressure 550~785Kpa. If driven by a separate air compressor, the min. power is 90kw. It can also use other air source only if the pressure and air consumption can achieve.
While you choose models, pls consider both the capacity and air supply. Enclosed is the brochure for your information.
You can visit our website to check the working performance:
https://www.gnsolidscontrol.com/video/solids-vacuum-pump-pick-up-material-with-height-of-3-meters-video.html

Besides solids and sludge vacuum pump, GN Solids Control does also make vacuum cleaner for oil mud clean-up or tank cleaning of rig site. It is a dual function vacuum unit for both vacuum cleaner and vacuum transfer pump. Operators only need to change the suction head to suit for different material and different applications.
Besides oil rig site, the GN Mini Vacuum Cleaner can also be used as industry cleaner.
https://www.gnsolidscontrol.com/video/gn-vacuum-cleaner-for-industrial-waste.html