API SHAKER SCREEN

GN Solids Control has experienced many years’ successful growing in the past days. And these years, GN Solids Control is like a rocket and growing larger and larger in a fast speed. GN has established another branch manufacturing company close to Beijing, which means GN has two main manufacturing and designing centers in China. Besides, GN has one American branch company in Houston, TX and one Russian branch company in Moscow.
For such a large company, clients all over the world give fully support to GN’s growth, and we really appreciated their great help. To serve clients better and better is one of GN Solids Control’s persisting principles and dreams from some degree.
As it’s known to all, GN Solids Control equipment is under careful technical discussions with our clients, and manufactured perfectly by GN experienced workers.

For every solids control equipments, it need to be careful used too. One of the first important factors is the working environment. In order to perform well and for further easy maintenance, solids control equipments should comply with these following principles (take one set of ZJ30 drilling rig mud recycling system for example):
1. Three solids control phases for purification process：
1.1 GN Shale Shaker: screening
1.2 GN Desander: Separate solids diameter which is over 47μm.
1.3 GN Desilter: Separate solids diameter which is beyond 20μm。
2. GN Designed treating capacity：≤250 m3/h，Rated treating capacity：240 m3/h.
3. Temperature Condition：-20°～40°.
4. Mud Viscosity：≤80 S.
5. Climate: rain, snow or fog.
6. Work continuously in rated power.
7. Range of Working Height: Work regularly in areas less than 2500 meters above the sea level; may decrease the efficiency in those over 2500 meters above the sea level.
8. These equipments should follow the standards (SY/T5612-2007) Specification Drilling Fluids.

GN Mud tanks are widely used in solids control area, although the functions might seems quite resemble which are to storage the muds or wastes for different separation steps, all of these tanks play a vital important role in solids control.
Today we would like to share some info on how to design a GN mud tank roughly in a fast way.
To design a GN mud tank, we need to know the way that our customer going to transport in their region or the ship method to their country. Usually there are different land transportation limits in various countries, so these limitations are the first numbers we need to discuss with our customers. But all of these limitations are must be within a container.
So the second thing need to consider is the sea transport way. Will the solids equipment be put into container? Will the equipment be designed to the same size as the container? Or will the equipment be shipped in bulk? Depend on different shipping methods, the tank can be designed into different limited sizes.

If the tank is put into a container, the largest width is 2250 mm (including sand cleaning doors and lifting lugs); If the tank is designed as a standard container, than the largest width is 2588 mm; Or if the tank is a large capacity tank, the largest width is 2950 mm.
For all these tanks, we usually designed them with integer number, from 4m to 12m. It’s better the length is not beyond 13.5 m. If the tank (length is 6m) is made into 20 feet container, the length should be 6058mm; while for tank (length is 12m) is made into a 40 feet container, the length is 12192mm. Skid-mounted tanks should plus 250mm in both ends of the tank (which is 500mm in total), the final length is with 0.5m.
More details, we’ll share with you in our next blog.

Solids Control equipment combined with dewatering unit for processing mud

As we all known, GN Solids Control Company are specialize in providing turnkey solutions for customers on solids control and waste management systems. It’s important to provide customers with best quality equipments such as shale shakers, mud cleaners, decanter centrifuges and cuttings dryer etc. Some other auxiliary equipments are also quite important when it comes to show a perfect function for the whole system.
Today we would like to give you a brief introduction on GN mud degasser. Mud degasser is also called poor boy degasser sometimes.

GN mud degasser is a useful equipment to eliminate the gas from drilling fluids before the fluids is sent to solids control systems. Although the mud degasser is not always used in the drilling process, it’s quite important when there is much gas in the drilling fluids. Because too much gas can destroy the solids control equipment. For the gas separated from the drilling fluids, some of it might be SO2 which is very harmful for people’s health. So usually there is one flare igniter connected with the mud degasser, the harmful gases can be burnt in a quite far place.

The mechanical structure of GN mud degasser is very simple. Just take GNZYQ 1000A as an example, the tank diameter is 1000mm. Drilling fluids first run along with the inlet pipe which is 4 inch, then it will hit several baffle plates. Due to the large pressure, the collision force is big enough to separate the gas from drilling muds and run out from the outlet pipe which is 10 inch to a flare igniter or to some other faraway place.
For the after treated drilling fluids, it is sent to solids control system for further separation. Sometimes, there will be a vacuum degasser right in the back of shale shaker. The vacuum degasser is used to eliminate gases in small diameters. Different situations might need to use different equipments, so if you have any further questions, welcome to contact us directly.

GN Two Decanter Centrifuges Used in Nigeria

GN Solids Control has working on solids control and waste management fields for years. Every year, GN Solids Control produces about one hundred and fifty decanter centrifuges and four hundreds shale shakers as well as the other solids control equipments. Most of these equipments are sent to abroad due to the large market. 

Recently, GN has manufactured two decanter centrifuges for clients in Nigeria. These two decanter centrifuges are composed one whole system for drilling fluids separation.

As we all known, when two decanter centrifuges are using together, the first one is usually treating larger capacity drilling fluids, and the second one is used for separating finer solids. Although the decanter centrifuge is mainly used to separate solids with diameter larger than five microns, two decanter centrifuges have different separation function when working together. 

Regarding to this system, GN proposed to use two sets of GNLW 363. The bowl diameter of this decanter centrifuge is 14 inch and the length of this decanter centrifuge is 50 inch. Treating capacity can reach to 200 GPM. But for rotating speed of this decanter centrifuges, they are not the same. To save money for customers, the first centrifuge can be fixed speed at 3200 r/m. And the second one can be rotating from 0 to 3200 r/m. 

When the drilling fluids with mud changes, we can adjust the rotating speed of the second centrifuges to satisfy the treating demands. However, it would be better to choose two sets of adjustable speed decanter centrifuges. When controlled by PLC, all the operation work will become much easier for workers.

Here these two decanter centrifuges are both fed by screw pump. GN use famous brand screw pumps which is a very effective feeding pumps, when this pumps is working, it can avoid agitating the drilling fluids. For any details, welcome to email to thomas@gnsolidcontrol.com

Several factors to affect the working capacity of decanter centrifuge
Now GN Solids Control has different types of decanter centrifuges, the treating capacity are ranging from 40 GPM to 484 GPM. As we all know, decanter centrifuge are designed and manufactured for separate the drilling solids which diameter is mainly below 10 microns. But for the common people, we might do not know why the treating capacity can be varies a lot.
There are some parameters, such as the diameter of the bowl, the length of the bowl, the position of the liquid outlet, the position of the discharge port and the rotating speed of the bowl as well as the rotating speed of the inner propeller. Among these parameters, the bowl’s diameter and the bowl’s length are two main factors we usually talked a lot.
It is not difficult to understand when a bowl with a larger diameter and a larger length, it has much more working room space to treat the drilling fluids which means it must have a larger capacity.

Sometimes, we will access one bowl by the ration of length and diameter, which we named f (f=Length/ Diameter) here. Since we usually design the bowl diameter from 9 inch to 22 inch, and the length from 26 inch to 71 inch, so it’s quite common the f is ranging from 3 to 8.
Some designers believe the decanter centrifuge should working at a high speed and the f must be very large. Considering the fierce vibration of the whole decanter centrifuge, the speed cannot be over 4500 r/m. At the speed of 4500 r/m the inner parts (such as inlet pipe) will broken in a short period. According to the former experiences, rotating speed at 3800 r/m (with bowl diameter in 22 inch and bowl length in 71 inch) can satisfy the most separation demands.
For finer separation, GN recommends to use two decanter centrifuges. Besides, GN has mini decanter centrifuge especially for diamond drilling. Any details, welcome to email to thomas@gnsolidcontrol.com

huffingtonpost:

Welp, we’re pretty sure this guy has had worse days.

As GN produce more and more solids control equipments and drilling waste management systems to satisfy customers changing demands on drilling fields or Non-dig fields, clients have higher and higher demands on GN Solids Control which is providing them the necessary costume parts such as shale shaker screens.
Now GN will soon establish his new factory to meet the needs of large quantity shaker screens. On the end of this year, GN new branch factory will help GN to produce much more shale shaker screens, and this new branch company is quite near to GN Solids Control Company. It’s such an great news for GN and for GN clients.

Usually, GN can produce from five thousand pieces shale shaker screens to eight thousand pieces shale shaker screens every month, however, considering the large need this manufacturing capacity is not enough. Anyway, on the basis of new factory, GN will solve these problems perfectly well, and GN will introduce many advanced CNC machines to improve the production, as well as hire more experienced workers to working on this special field.
For GN Solids Control, all kinds of shale shaker screens can be produced, such as the hook strip flat screens, the pyramid screens, hook strip soft screens and steel frame screens etc.
If you can name the screen, then GN will design and manufacture them. The good qualities that are followed strictly by GN engineers, so the world most famous brands can be replaceable and performed well on various different shale shakers. By using GN shale shaker screens, our clients can not only keep the same performance as the world famous brands screens, but also can same much money on the cost. That’s why our clients always call GN shale shaker screens cost effective.
With many successful experiences, GN has over sixty countries’ clients that are using his shaker screens, and we believe this is just the good beginning of GN shaker screens, in the future more and more clients will have the opportunity to get to know GN.

An Introduce of GN Mud System
GN Mud Systems are widely used in many areas, recently GN got some orders on water management from abroad.
GN technical engineer recommend one set of mud system whose treating capacity can reach to 150 gpm, and the normal treating capacity can up to 132 gpm.
This is system is including three sub-systems: The first one is mud cleaning system, the second one is Cuttings Feeding system, and the last one is
1.GN Mud cleaning system
This system is composed of one shale shaker whose shaker screen is 100 mesh, one mud cleaner which can separate particle size 15mircrons to 20 microns, one centrifugal pump to feeding the mud cleaner, as well as one mud tank which is divided into two compartments.
By using this subsystem first, the No.1 compartment which is shaker compartment can treat mud by using shale shaker, then it droped into No.1 compartment. On the other side, the mud processed by mud cleaner droped into No.2 compartment, at this time it is clean mud which can be re-used directly. For clients have higher demands, we will recommed to use decanter centrifuge to do another process.
2.GN Cuttings Feeding system
This subsystem is including one Cuttings Collection hopper and one Peristaltic pump. By using the Peristaltic pump, this system can transfer the cuttings from the collection hopper to vertical cuttings dryer. For Peristaltic pump, it’s usually used to transfer drilling mud with large density.
3.GN Cuttings management system

Vertical cuttings dryer, decanter centrifuge and centrifuge pumps, as well as mud tank composed of this sub system. Since this tank are divided into two compartments too, we named it by No.3 compartment and No.4 compartment. After the mud was treated by vertical cuttings dryer, it will flow to No.3 compartment. And the clean mud will go to No.3 compartment from No. 2 compartment. The decanter centrifuge can separate particle size 5 microns, after this the clean mud can be re-used for drilling again.

How to maintain a GN Decanter Centrifuge?

Now many drilling industries and some other fields are using more and more decanter centrifuges due to the excellent performances of them. So it’s quite important for operators to know some repair knowledge to maintain the decanter centrifuge in a good condition.
As we all know, if we can take care of the decanter centrifuge carefully, and when we use it for working, follow the working principles strictly when it’s working.After using the decanter centrifuge, the workers do some regular maintenance according the operation manual. It’s sure the life ot decanter centrifuge can be prolonged and extended. In order to avoid any rust or dust to fall into the inner of the drilling centrifuge, workers should certainly mop the external of the machine to make sure it is dry and clean. Secondly, during our daily use, the decanter centrifuge’s conveyor and conveying belt are very easy to be loose , so it need to be frequently checked up and to be exchanged if they are do not work well. We should also check the easily wearing parts of the machine and the operating situation of the electric system of the machine and attach great importance to the battery system regularly.

We all know in order to have a very high level of concentricity between the Differential mechanism and the main body of the decanter centrifuge. We must be very careful when the decanter centrifuge machine is installed at the work site. To make sure and guarantee the necessary shaking when decanter centrifuge is operating, if the connection between the two parts of a machine, than a cooper chip should be put between the the conveying belt and differential mechanism.
Due to assorted reasons, the machine cannot work as well as the beginning, this phenomenon cannot be avoided. We will need to do an overhaul of the machine after some working time of a decanter centrifuge machine.
Aslo a good brand is vital important for our future maintenance and repairing. So welcome to ask for technical help from our technical engineer: thomas@gnsolidcontrol.com