Oct 27

GN’s solid control equipment can use for many kind of area,HDD was a sample

GN Solids Control is a top manufacturer of Horizontal Directional Drilling(HDD) Mud Equipment/HDD Mud Recycling System.

Horizontal Directional Drilling (HDD) is a specialized technique used to drill for road bores, utility crossings and under water ways. When the inclination of a wellbore is measured and proven to be horizontal in nature, HDD techniques are used to drill into these hard to reach and challenging areas.

HDD need ensures that infrastructure lines, such as pipelines and water lines, can be built to cross sensitive areas like waterways, populated areas and roadways without disruption.

Before choose HDD system,we need make sue how much capacity the drilling will need,and the material we need do solids control,to do recycling more and reduce the waste,also friend for environment

GN’s engineer team will give suitable solution if have special need,custom design is most situation we will meet,and we are good at.

Normally DHH include 2 part:solids control and recycle

Equipment will have Shale shaker,Desander,Desilter,Centrifugal pump,submersible slurry pump,mud mixing hopper regular

GN drilling mud recycling system has been applied in many countries for HDD and CBM drilling operation.Especially popular in Australia ,Indonesia, India etc.With GN Solids America branch and GN Australia Partner, GN provide mud recycling system service and spares from Beijing, Houston, and Brisbane.

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Oct 23

Vacuum pump is one of GN’s product when meet solids control situation

Sludge vacuum pump is a type of high load and strong suction capacity vacuum transferring pump,it is also called solids transferring pump or cuttings transfer pump. The unique structure design enables it work in the very tough circumstance with less maintenance. It is ideal equipment for transferring sludge with high solid content up to 80% and higb specific gravity material. Vacuum pump has below features : high efficiency Venturi device can produce a vacuum up to IO meters water column for material suction under high air flow circumstance. It is designed with compact structure, almost no wearing parts, for Mgh density material transferring like cu«ings and oily sludge etc.

Working Principle

  1. Material Suction

High pressure and high speed air gets into thejet air tube assembly via inlet (high vacuum is produced by the air pocket in the jet air tube assembly) producing high vacuum in the tank for material suction.

Air enters into the distribution pocket via inlet, vacuum produced in the air distribution pocket.(when restricted flow passes the contractible cross section, flow speed will increase. Flow speed is inversely proportional to the cross section, the increasing of speed will go with reducing of fluid pressure. Low pressure will be produced near high speed fluids, then produce suction action)

When low pressure produced at the air pocket, the air in the tank flows towards the air pocket and gets out together with compressed air and then vacuum produced in the tank.

When pressure inner tank is lower than ambient pressure, material will gets into the tank under atmospheric pressure. (6-9 meters for water suction height delivery distance is different due to material density and viscosity)

  1. Material Discharge
  2. After suction process, compressed air flow direction changes and gets into the material storage tank.Pressure inside tank will be higher and higher finally the material is discharged out under high pressure and flows to distance with compressed air. (Max. Horizontal distance 500-1000 meters, delivery distance is different due to material density and viscosity)

When installing, need use different tube for feeding and discharge ,to make sure pump running well

Any problem about install and test running,please contact GN’s service and sales

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Sep 30

Differential as the important part of decanter centrifuge,GN always use high quality part to keep equipment running stable

GN’s decanter centrifuge through the body of revolution (drum and spiral) high-speed, produce thousands of times the gravitational acceleration, rotating through the inlet into the body of solid, liquid layered material quickly, and through the differential of this device, the relative speed of revolving drum and spiral, the solid launched by decanter centrifuge solid phase, liquid flowed from machine, to achieve the effect of solids&liquid separation.

The differential in a horizontal spiral centrifuge is to ensure that the drum and spiral rotate at different angular speeds and achieve the best differential.


There are three kinds of differential transmission, planetary differential and hydraulic differential.

The cycloid differential compact structure, convenient installation, but the output torque is small, the applied to need big thrust separation fields such as iron and steel slag, coal mine wastewater, limitations, decanter centrifuge performance can’t running;

Planet differential relative structure is larger, the torque output is also very competitive, but when applied to the decanter centrifuge, installation dimensions of the machine performance is one sector, as the high-speed machines, even very small deviation will directly affect the quality of the performance of the machine;

Hydraulic pressure differential, complement each other, in the same size of cycloid differential case, can be output, even more than with the scope of application of planetary differential torque, because by hydraulic system to produce differential, in 1r/min to 25r/min range,can realize infinitely variable speed, greatly promoted the application of decanter centrifuge field.

GN’s 3VFD for bowl speed,differential speed,and pump capacity,and the VFD brand is ABB or SIEMENS,provide good/long service

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Feb 18

GN Solids Control was firstly known as a manufacturer of drilling fluids recycling equipment that are used to remove the solids in the drilling fluids, thus the drilling fluids could be reused. In China, there are several this kinds of manufacturers who can fabricate the traditional solids control equipment like shale shaker, mud cleaner, agitator and mud tanks.
Keeping improving is one of GN’s features. In the past few years, GN has invested a lot on upgrading the traditional solids control equipment to make it easier for operation. Moreover, GN has developed many new products that keep GN a leader in the solids control industry. In the year of 2016, GN released the system for hydrocarbon recovery. It is an effective solution to treat the waste oily sludge.


Oil Sludge Recovery

GN’s hydrocarbon recovery system is a three phase separation system. It includes primary coarse solids separation shaker package, fine solids separation centrifuge package and oil & water separation package.
The working principle of GN hydrocarbon recovery system is to remove the solid particles step by step from the oil sludge. The high G force drying shaker unit is equipment with hot water spraying system for better washing performance, this process will remove most of the oil content on the solids.
Decanter centrifuge is equipped with chemical dosing system for fine solids separation after demulsification process. GN’s dosing system could be used in all kinds of dewatering system for ultra fine solids separation.
The liquid discharged from the decanter centrifuge flows into the oil water separator package. Here an inclined plate clarifier is installed for further removing the remaining silt in the liquid for clarifying the oil and water mixer. Then the liquid mixer flows into the micro bubble separation for oil and water separating.
GN’s hydrocarbon recovery system makes GN a real separation solution provider other than a solids control equipment manufacturer. GN would like to communicate with all the clients on this hydrocarbon recovery system.

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Feb 10

Vertical rotating drilling rig is the normal machine used in piling project. During the drilling process, in order to protect the inner wall of the drilling hole and speed up the process, the operator always chooses to use drilling mud. Then here comes another problem how to reduce cost of the drilling mud thereby to reduce the cost of drilling. The solution is to use mud recycling system to make the drilling mud reusable.
The purpose of the mud recycling system is to remove the large size solid particles in the drilling mud by several separation machines. In regards to the mud recycling system for piling project, it could be a very compact design as separation process is not so complex as that for oil gas drilling. GN solids control is one of the most experienced separation solution providers who could provide the mud recycling system for almost all the industries will use it. GN already developed the standard mud recycling system especially for the piling project.


De-sanding Unit

Strictly speaking, the mud recycling system used in piling should be called de-sanding unit as the drilling depth is normally shallow and most of the solid particles are sand. A de-sanding unit would be enough for processing the separation to get the expected reusable drilling mud.
GN’s de-sanding unit is a compact structure 2 steps separation system. The main equipment in this de-sanding
unit is combined with a 2 layers shaker and cyclone manifold. The double layers shaker is used for coarse solids separation by the under layers and the upper layer screen is for drying the slurry discharged from the cyclone unit. The tank under the shaker unit is used to store the drilling mud. One centrifugal pump is installed in the system for transferring the mud to the cyclone unit for sand separation.
This de-sanding unit could be connected with extra mud tank for larger capacity mud storage. The operators can also equip a jet mixing unit to make an self-contained mud recycling system for other drilling project like HDD and water drilling.

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Feb 04

GN’s mud system is not only used in oil gas drilling but also in some other drilling projects. Therefore, GN developed the drilling mud recycling system for non-oil drilling like HDD, CBM and water well drilling.
One type of water well drilling is for the drilling water, while the other one type of water well drilling is for water re-injection to underground for keeping the pressure of oil layer for continuous oil producing.
Working principle of the mud recycling system for water well drilling is same as the mud system for oil gas drilling. Removing the cuttings, sand and silt in the drilling fluids to make the drilling fluids reusable is the purpose of the mud recycling system.


Compact Mud System

Shale shaker is always the first stage equipment for solids control; it could remove the coarse cuttings in the drilling fluids. Shale shaker is the only one equipment by separating the solids hundred percent by the size of the particles. The screen could remove out the solid particles larger than the wire mesh openings. By adjusting the G force and the shaker deck angle, the operator could adjust the dryness of the discharged solids.
De-sander and de-silter could be called hydrocyclone unit. Same as the decanter centrifuge, hydrocyclone separates solid and liquid by using centrifugal force. Density difference is the main factor should be considered if the hydrocyclone unit would be applied.
Mud system for water well drilling is designed compact structure. As per the treating capacity, the corresponding equipment with same capacity would be installed in the system. For different drilling depth, the nos. of the mud tanks are various in different mud system.
Not all the shale shaker, de-sander or de-silter would be used in one mud system. GN ever made a mud recycling for a water well drilling project. The main equipment includes shale shaker and de-silter unit, no de-sander involved as the de-silter cyclone could fully hold function of the de-sander unit.
Besides mud recycling system for water well drilling, GN also developed other separation solutions. Any question, please contact with GN freely.

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Jan 20

In past couple years, besides the petroleum industry, GN also tried expanding the business to some other fields. The big bowl decanter centrifuge and dosing system are two of the main equipment that widely used in environmental protection for waste water treatment. The decanter centrifuge is used to remove the solid particles in the waste water, used together with the dosing system; the treated water could be discharged directly with national standard for environmental protection.

GN Decanter Centrifuge

Dewatering Centrifuge

By now, GN has already developed he big bowl decanter centrifuge for dewatering process. A very popular model GNLW553 in GN’s production line is the unit with 22 inch bowl diameter. The bowl length is over 3 times of the diameter. This is not the largest model GN can make. In near future, GN’s decanter centrifuge especially used for water treatment will be released. The model series would be 454 and even 554.
GN’s decanter centrifuge is VFD available for main motor, back motor and the feeding pump. All the electric components used come from worldwide famous brand. Operator could set the RPM on the HMI panel and monitor the machine running conditions.

The dosing system is designed containerized with all the components are installed inside the container. GN has both 20 feet and 40 feet model. Clients could choose high configuration that including automatic dosing system and acid/alkali mixing tank or simple polymer mixing tank.
The cured flocculation polymer is fed to the waste water and then the ultra fine solids will be gathered to become large size blocks for easy separation by the centrifuge.

Polymer Dosing System

Dosing System

Features of GN Waste Water Decanter Centrifuge
1. Speed adjustable as per treated waste water condition
2. Humanized HMI operation for easy operation and reducing of manpower
3. Low consumption on polymer and energy comparing with filter press
4. Considerable protection for solids discharge port and scroll for longer lifetime

GN will release more models of decanter centrifuge for environmental protection waste water treatment. Any questions, please feel free to contact GN know.

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Jan 13

Mud system will not work if there are no mud tanks. In the mud recycling system, the tanks are used to store the drilling mud to be a base where the solids control equipment to be installed. Normally, more than one mud tanks
will be used in the oil drilling mud system. For different purpose, the design of the mud tank is different, especially the inner structure of the mud tanks.
There are mainly 3 types of mud tanks recycling tank, intermediate tank and premixing tank. Then what are the different among these 3 types of mud tank?
The recycling tank is where to install the primary shakers and degasser unit, and also the de-sanding and de-silting unit. Each of equipment needs a compartment in the mud tank. As the recycled drilling mud is treated by the solids control equipment one by one. After treatment by each of the equipment, the drilling fluids will be cleaner than before. Thus the drilling fluids cannot be mixed. The wall between two compartments always has an overflow port for balance of the drilling mud in the tank.


Mud Tank System

For the tank to install the de-sander and de-silter unit, inner structure of the mud tank would be much complex as there are pipes for centrifugal pump to such the drilling fluids from inside of the tank and transfer to the cyclone for further treatment. Operator has to know which pipe is for de-sander and which pipe is the desilter.
On the mud tanks for installing the solids control equipment on, there always have the walkways and handrails. The walkways provide enough space for the operator to walk around the equipment for operation and maintenance. Intermediate tank is a type buffering tank, part of this tank is for mud recycling, and other parts are used for mud storage. Operators can easily tell how many compartment in this tank.
The premixing tank is used to mix drilling fluids. It always is connected with the jet mixer unit. The mixing pumps suck liquid from mud tank and send liquid back again with added mud materials from the hopper. Thus the pump should be able to suck the drilling mud from anywhere in the mud tank used for mixing and storage.
Therefore, in the mixing tank, there are two groups of pipelines, one for sucking, and the other one is for sending liquid back. Mug agitators and mud guns are always installed on the mixing tank.
Though, the inner structure of the above tanks is different, the outer dimension and design are always the same for purpose of easy transportation and assembling.

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Jan 06

Two weeks ago, GN Solids Control completed one set 40 feet water based drilling waste treatment system that is used for oilfield waste management service. Water based drilling waste is coming from the drilling projects where
use the water based drilling fluids to cool down the drill bit, protect the drilling well wall and take out the drilling cuttings.

The main equipment included in this 40 feet water based drilling waste treatment system are as follows:

1) High G force dryer shakers used to further drying the cuttings discharged from the primary solids control equipment, wide open deck design allows the feeding of waste easily
2) Dosing System for mixing chemicals that will fed to the centrifuge for flocculation process
3) High speed Decanter Centrifuge for liquid and solids separation
4) Mud Tank unit under the shaker to collect the liquid going through the shaker screens
5) Screw Pump transfer the fluids to decanter centrifuge for polishing


Drilling Waste Management System

Working diagram of the 40 feet water based drilling waste management system

The drilling waste, always coarse drilling cuttings, was fed to dryer shaker for further drying, and then the screw pump will transfer the drilling fluids with ultra fine solids to the decanter centrifuge (It is also dewatering centrifuge). In the meanwhile, the chemical dosing system mixes polymer, once the polymer solution is cured. The diaphragm pump transfers the polymer to the dewatering centrifuge. The ultra fine solids will get together once meet with the polymer, which will help the centrifuge to separate the solids. The drilling waste management system for separating the ultra solids in waster based drilling fluids is also called dewatering system.

Equipment features of the 40 feet water based drilling waste management system

GN’s high G force dryer shaker has up to 8 G force. with 4 panels composite material screen, the Dryer shaker has an excellent separation and drying performance.
GN high speed decanter centrifuge and feeding screw pump are VFD driven and controlled by PLC. The operators could set the suitable parameters to treat different kinds of drilling fluids.
Besides the drilling waste management system for water based mud, GN also developed the equipment for oil based mud. Even the oily sludge treatment solution is one of GN’s main businesses. GN’s system for drilling waste management has many performance cases that will prove GN equipment quality and availability. This is why customers choose GN Solids Control.

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Dec 30

Solids control is one of the main jobs where GN’s centrifuge could be used. Now the latest design of GN decanter centrifuge is the C version with premier configuration.

By the end of this year, 2 of GN premier decanter centrifuge caught up the last ship to Latin America for the solids control job there.  Below are the main features of this premier model.


Solids Control Decanter Centrifuge

  1. High level material used for the rotating parts. The bowl is the core part of the centrifuge unit; the separation is process when the bowl is rotating. GN uses duplex stainless steel 2205 to make the bowl with centrifugal casting technology. The evenly material distribution ensures the excellent balance performance when rotating. Inside the bowl the scroll is made of SS316L which is much better than the other China suppliers who are using SS304.
  2. All around protection is put on the parts that will bear a lasting friction coming from the solids. The scroll is protected by 4mm thick tungsten carbide tiles that are replaceable for longer lifetime. The outlet port of liquid speeding up cone on the scroll is covered with ceramic liner. The same ceramic liner is also installed at the solids discharge port on the bowl. To prevent the building up of solids in the collection box, the tungsten material scrapers are fixed on the bowl to protect the bowl from wearing.
  3. To ensure the treating capacity, GN makes the slurry feeding direction and solids delivery direction same. This will speed up the solids delivering in the bowl. On the scroll blade, there are several openings allow the liquid passing through for large flow rate.

GN premier decanter centrifuge is also widely used in waste management like the waste cuttings treatment and the oily sludge recovery project. For safety consideration, GN premier decanter centrifuge is equipped with DNV lifting certified skid for transportation.

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