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HDD | GN Desander Desilter
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Aug 26

GN Solids Control is one of the world famous solid control and waste management companies which specializes in manufacturing the related equipment, such as shale shaker, desander, desilter, mud cleaner, vacuum degasser, mud gas separator, decanter centrifuge, agitator, centrifugal pump, cutting dryer, screw pump, shear pump, mud gun and so on. All of the product line are used in the oil and gas drilling, mining drilling, HDD, TBM and many trenchless area.

The trenchless technology is also called “non-dig” which is often used in the oil and gas pipeline laying, or the underground pipe repairing without digging the ground surface. This can specially used in the densely populated area without disturbing the normal life of the local residents. Before laying the pipeline or doing the repairing job, the contracting company will need to do the HDD work, that is horizontal directional drilling, to dig to the underground and finish the job. During the drilling process, the contractors will need to use a lot drilling mud, and GN’s new mud mixing system is designed for this job. The mud mixing system consists of several mud mixing tanks and skid mounted jet mud mixing unit. On the mud tanks there are agitators and mud guns, the agitators are used to stir the mud to make it even and keep the good chemical feature. The mud gun is used to spray to corner of the tank to avoid the solids collected there. The jet mud mixing unit is used to add some chemicals to the mud system to keep the mud working in good condition. For the tanks, GN can provide both the rectangular and cylinder tanks, the customer can choose the shape according to their working condition.16.08.19-Mud-Mixing-System
That’s the brief introduction of the GN’s mud mixing system. Hopefully it will be useful  and helpful to you. GN has many more solid control systems, they can be used in different operational situations and help you achieve your target easily and cost effectively. Welcome to visit and please send your inquiries to

written by GN Desander Desilter \\ tags: , , , , , , ,

Nov 06

Although the major share of GN products are used for oil and gas industry, GN Solids Control also occupies the first place in market share in HDD, CBM ,TBM and Loop Zero Discharge System. And among all GN HDD mud recycling systems, the 500 GPM capacity is the most popular among the users.
Picture below is one set of GNMS 500GL HDD System for a jobsite inside China, this is the 3rd project this system is used to serve and GN Solids Control sent engineer to jobsite help to re-set up of the system.

GNMS series mud recycling system is high standard configuration of GN mud recycling systems, they are perfect solution for HDD projects because:
1. GNZS703E-DZ shale shaker is a mature design of GN Solids Control, it use 3 pcs of shaker screens and the screen area is 2.63 cbm. Same as all the GN Shale Shakers, GNZS703E-DZ shale shaker uses the patented technology for the deck sealing in order to prevent leaking of liquid. Shaker deck frame is Stainless steel to have stronger structure for a longer service life. Unless its peer model GNZS703E-HB which is designed for oil and gas solids control system, this model of shale shaker is suitable for get fed via a submersible slurry pump from a mud pit. It is designed especially for the HDD projects.
2. GNZS-703E 1S8N mud cleaner is a combination of the 2nd and 3rd separation steps with desander cone and desilter cones, and the shaker below is used as a under shaker for both desander and desilter cones. GN choose polyurethane cyclones as the desander and desilter cones, more wear proof and longer service life than the metal material ones.
3. As high configuration of GN mud recycling systems, GNMS 500 GL has mixing hopper and mixing pumps for adding new chemicals into the well cleaned drilling mud after recycled. And this 500 GPM system has a larger storage capacity comparing with the standard GNMS 500G system.

written by GN Desander Desilter \\ tags: , , , , ,

Sep 18

Drilling mud circulation during zero-discharge system is an endless cycle. However, while the drilling fluid filtering through the start from shale shaker to the end of decanter centrifuge,
The density of the mud changes during filtrations. The total amount of the drilling fluid will lose by continuing fluid filtering as well. Jet mud mixer use to make up the lst of the drilling mud by adding new fluid into existing fluid and mix them well. It is also mixes other additive into the drilling mud such as betonies and barite. A Chemical additive such as polymer are used to change drilling fluid density, viscosity and hydration. The additive is entered by jet mud mixer into the mud storage tank.
The mud mixing hopper is part of the jet mud mixer that powered by centrifugal pump that allow the drilling mud move at high velocity to funnel shaped hopper. Additive materials are added through the hopper to provide uniform mixing. Liquid base additive also added through a hopper to provide uniform mixing.

GN Jet mud mixer

GN Jet mud mixer

The capacity of the jet mud mixer, various mud tanks sizes and correspond shear pump is providing it as well to ensure pressure.
Mud mixer widely used in HDD (horizontal directional drilling) and oil gas drilling. Jet mud mixer device generally consists of a sand pump and a jet flow mixed hopper with manifold valve connection and are installed on a pedestal called the single jet mud mixer device, or by two pumps and two mix slurry hoppers called double jet mud mixer device.
The jet mud mixer paired up by shear pump various input rates and mud tank size, it makes mud contain rheological properties and decrease cost of the drilling mud as possible. GN Solids Control’s jet mud mixer treating capacity from 200 GPM to 1408 GPM.

written by GN Desander Desilter \\ tags: , , ,

Oct 14

Utilized by many HDD contractors for many years, drilling fluids recycling systems have found favor with the mid-size rig contractors and are even being used with some mini-rigs. Just as special care is taken in selection of drilling rigs, drill stem, bits and reamers, the same care should be taken in selecting drilling fluids recycling system.

HDD Rig Driiling Fluids Recycling System

Principals of Drilling Fluids Recycling Operation

During HDD projects, drilling fluid from the wellbore is pumped from the mud pit into a primary or scalping shaker, where larger drill cuttings are removed. The fluid then drops into the mud tank compartment where it is recovered and pumped into hydrocyclones for removal of finer solids. some systems will discharge the hydroclone underflow slurry over ultra fine screens for additional fluids recovery. The hydrocyclone overflow (clean liquid), is discharged into a clean compartment and is ready for reuse or conditioning. Discharging hydrocyclone underflow slurry over ultra-fine screens is an very good solution to make the solids discharge much drier, and more fluid is recovered. This requires a high performance shaker with a large screen area.

How to Select the Drilling Fluids Recycling System for your HDD rig

Drilling fluids recycling system should include mixing system with a venture-style jet mixing hopper and a charge pump to send positive pressure feed back to the rig’s mud pump. Adequate tank volume is important, but treating capacity of the system is even more important. A recycling system should be capable of processing at least one and a half times the maximum capacity of the rig’s mud pump. This is usually determined by the size and number of hydrocylones the unit has.
For safety purpose, handrails and stairways are necessities for workers constantly climbing up and down the recycling system.

GN Solid Control, a 5-years old manufacturer for HDD rig drilling fluids recycling system, has already exported her recycling system to more than 50 countries. Standard and customized design recycling system would meet your vary requirements. It is the time to take your phone to contact with us if any request aroused from your side.

written by GN Desander Desilter \\ tags: , , , , , , ,

Sep 29

At the Drill 2012 Adelaide exhibition, AMC shown their very compact design Drilling fluids recycling system for diamond tipped core drilling for mineral industry.

AMC Mud System for Diamond Drilling

What is Diamond Core Drilling

Commonly used in construction to create holes for pipes, manholes, and other penetration in concrete or stone, in core drilling the drilling apparatus remove material by a hole saw looklike drill bit tipped by diamond. The material left inside the drilling bit is referred to as the Core.
In mineral exploration, the core samples are recovered and examinde by geologists for mineral percentages stratigraphic contact points. The exploration companies could get the information necessary to begin or abandon mining operations in a particular area.

AMC Diamond Drilling Mud System Main Equipments

As the diamond core drilling always does not need too much drilling fluids, the matching mud system mostly is of small treating capacity. The treating capacity of AMC shown mud system is 20GPM.
It contains:
1 unit Mini shale shaler with 1 panel screen
1 unit centrifuge with bowl diameter of 220mm and Max. operating speed of 4800rpm.
1 unit screw pump to transfer mud, it functions to feed mud to centrifuge and transfer the clean mud to mixing tank.
1 unit 0.75kw mud agitator
Electric control panel and other attachments.

In order to make it easy for transportation, there are lifting ears at the 4 coners for the skid, also there are holes in the middle of the skid for forklift.

GN Mini Model Centrifuge for Diamond Core Drilling

GN Centrifuge for Diamond Drilling

At this moment, GN’s mud systems are mainly used in oil & gas, HDD industry.So compact mud system like the unit manufactured by AMC is not GN’s advantage. But we have already given attention to diamond core drilling.
Centrifuge GNLW223M, former model GNLW220-660 is GN’s new design special for diamond core drilling, for more information, please leave message or contact GN Solids Control.

written by GN Desander Desilter \\ tags: , , , , , ,

Jun 22

Horizontal directional drilling rig are widely used in oil and gas industry and municipal construction of  trenchless projects such as pipe laying. Offering the top quality HDD mud system is a mission of GN Solisds Control, that is why GN know much about China horizontal directional drilling rig manufacturer. Below is a list for China HDD rig manufacturer, hope could offer you some help in finding the best rig supplier for you.

GN 1000GPM HDD Mud System

Vermeer China is oversea development branch company of Vermeer American. With its machines being used in more than 60 countries, Vermeer involved himself into agriculture, construction,minging, waste material disposal and other industries. Vermeer China located its production base in Beijing and opened offices in Beijing, Guangzhou, Shanghai to offer service for China Customers. In order to protect the benefit in different countries and detect the machine, each of their machine was installed remote monitoring system.

Huanghai designs and produces machinery for geological exploration, coalbed methane gas technology, engineering foundation pile drilling technology and trenchless pipeline laying technology. Regarding the trenchless technology, Huanghai could offer FDP series Horizontal Directional Drilling rig with pullback force from 150KN to 10450KN.

  • Shanghai Goodeng Construction Machinery Manufacturing Co., Ltd (Goodeng)

As a leader of trenchless industry, Goodeng owned its headquater in Shanghai, and established its production base in Jiangsu. With 8 years experience in trenchless industry, Goodeng HDD rigs have eatablished exploits in the project of China gas transporting from west to east, Middle Asia gas pipe laying and China & Burma oil pipe laying.

  • Drillto No-Dig Machinery Co., Ltd (ZT)

Drillto was established as a private company in year of 1999. However, they have started designing HDD machine since 1994. As one of the earliest Horizontal Directional Drilling rig manufacturer in China, Drillto could offer the drilling rig with pullback force from 120KN to 5000KN.

  • DW/TXS Construction Equipment (Beijing)Co., Ltd

DW/TXS was a joint venture between US-based The Charles Machine Works, Inc and Tu Xing Sun No-Dig Tech (Beijing)Co., Ltd. Their DDW series HDD rig’s pullback force range from 100KN to 6000KN.

  • Hunan Changgao Yipin Heavy Machinery Co., Ltd. (YIPIN)

Originally known as Hunan Yipin Heavy Machinery Co., Ltd., Changgao Group is one of China’s largest listed companies manufactures various types of YP Series trenchless horizontal directional pipe laying drilling machines range from 20T to 600T.

  •  Xuzhou Xugong Foundation Construction Machinery Co., Ltd (XCMG)

XCMG for your success. XCMG is a famous brand for construction machinery in the world. With the rapidly development of trenchless in China, XCMG also launched its own XZ series Horizontal Directional Drilling rig of pullback force from 100KN to 3000KN.

  • Jiangsu Yukin Machinery Manufacturing Co., Ltd (YUKIN)

Jiangsu Yukin Machinery Manufacturing Co., Ltd. was founded on February, 2008, as a wholly owned subsidiary of Jiangsu Gaochun Ceramics Co., Ltd. Relying on the technology research and development force, it is specialized in manufacturing and sales of trenchless equipments, YQ series HDD rig is their main products.

  • Jiangsu Dilong Heavy Machinery Co., Ltd (DILONG)

Nanjing Dilong Trenchless Engineering Co., Ltd. is one of the earliest companies specializing in the R&D of trenchless technology, as a member of ISTT and CSTT, Dilong has 4 series (DFM, DF, DL and DDL) or more than 10 varieties of products varying from 4t miniature to 400t large-scale drilling machines to meet customers’ different functions.

  • Institute of Exploration Techniques, CAGS (Duo-di GBS)

Affiliated with Institute of Exploration of Techniques, CAGS, Trenchless Tecnnology R&D Center is a constant director of both CSTT and ISTT. Meanwhile, CSTT training center is also located at the R&D center. Early in 1993, it firstly developed the trenchless pipelaying technology in China. Its main HDD rig is GBS series with pullback force from 100KN to 3200KN.

GREAT is young company incorporated by Liuzhou Gurui machinery and Guangxi Guorui Heavy Equipment. Starting in 2011, Great has design and produced GR90 series Horizontal Directional Drilling rig with Pullback force from 180KN to 1540KN.

Many of GN’s customer coming to us for mud system also inquire us about the supplier for Horizontal Directional Drilling rig. GN feel obliged to introduce the better quality supplier for our customer. As a result, some HDD project contractor instructed the rig manufacturer to obtain mud system and make a package for rig, then sell to them together. During the process of offering help to others, GN also get much from it. If any request for HDD mud system, welcome contact with us in any time.

written by GN Desander Desilter \\ tags: , , , , , , , , , , ,

Mar 17

In some drilling project such as HDD, CBM and water well drilling, the capacity of the drilling mud need to be treated is not so large. Sometimes 150GPM, 200GPM.  The traditional mud cleaner is oversized for this grade treating capacity. In order to meet the special requirement, GN designed and produced one type mini mud cleaner that applicated in small mud system.

Mini Mud Cleaner

The Advantage of Mini Mud Cleaner

Comparing with the traditional desander, desilter, mini cleaner has a underflow shaker GN752 model contains 2 panels screen. That make the mini cleaner could be used to treat the weighted drilling mud. For it has larger screen area and Vibration force. While the underflow shaker is structure compact and cost saving. It is a best choice for samll drilling project.

The Structure of Mini Mud Cleaner

GN mini mud cleaner is designed to match desander or desilter cone. For desander cone, we could choose 1 unit or 2 unit 10″ cone. The treating capacity is 500GPM or 1000GPM. Correspondingly, by this capacity, the desilter cone number is 8 and 12. If you want to use it when the flow rate is smaller. You could choose 4 units desilter cone or 6 units. While the matching capacity is 200GPM and 350 GPM. One artful design in GN mini mud cleaner is that the cyclone frame is installed and fixed on the Underflow shaker by bolts, we could uninstall it for transport convenience. For the underflow shaker for mini cleaner, we also offer linear motion and balanced elliptical motion. Welcome to GN website to get more information about this mini type mud cleaner, you could also send us email or make a call to us. GN will give you satisfying solution.

written by GN Desander Desilter \\ tags: , , , , ,

Dec 02
GN shale shaker

GN shale shaker

Shale shaker is one type major solids control equipment used in oilfield drilling, HDD or other drilling projects. Nowadays, the most advantaged shale shaker is the balanced elliptical shale shaker, while the most popular used is the linear motion shale shaker. What is the difference between the linear motion and balanced elliptical shale shaker.  Let’s talk something about it.

Shale shaker generation developing

As we known, the second generation shale shaker is Elliptical motion, the third generation is linear motion and the fourth generation is balanced elliptical motion. Many clients often regard the fourth generation as elliptical motion, however, that is an incorrect understading about it. Please refer the pictures below, you could find the difference of these two vibration mode:

Linear Motion

Linear Motion

Linear motion shale shaker often apply 2 vibrating motor with same power, but the vibrating direction is opposit horizontal. At the vertical direction, the vibrating force produced by 2 motors will reduplicate. Thus the vibrationg mode is a linear and forward direction.

While on a Balanced elliptical shale shaker, the 2 vibrating motors are different in power, that results an unbalanced force counteracting. So the vibration mode will be like that (shown in below picture.)

Balanced Elliptical Motion

Balanced Elliptical Motion


The balanced elliptical shale shaker is a production from combination of commerce and science. GN  BEM shaker won the National technology progress awards.

By now, we have exported many sets BEM shale shaker to our customers, if you want learn more about shale shaker or need a quote, just feel free to contact with us.

written by GN Desander Desilter \\ tags: , , , , ,

Sep 21

Cellar Pump, we could also call it submersible slurry pump, mud guzzler, trash pump etc. How should we call it all depends on where we are in the world. Cellar pump plaies an important role in HDD mud cleaning system. Today, let’s talk something about it.

cellar pump

cellar pump


Location and Application of Cellar Pump

In a HDD (Horizontal Directional Drilling) project, the drilling mud overflowing from the drill hole is often guided into a mud pit or a lower tank which the drilling mud level is lower than the drilling mud cleaning equipments. Therefore, we need a device to transfer the mud from a lower place to a relative higher place, that is why we choose cellar pump. Cellar pump is used to transfer the drilling mud to the first stage mud cleaning equipment – shale shaker. To some extend, cellar pump is not one part of the complete mud cleaning system. It is a medium between the rig and mud system.

Continue reading »

written by GN Desander Desilter \\ tags: , , , , ,

Aug 20

In order to learn well about Trenchless Drilling Mud System, we have to know what is trenchless drilling technology. Trenchless technology is a type of subsurface construction work that requires few trenches or no continuous trenches.  Because of the minimal disruption to surface traffic, business, and other activities, trenchless drilling technology is widely used in installation of new or replacement or rehabilitation of existing underground infrastructure.

trenchless drilling mud system


Why Need A Mud System in Trenchless Drilling

HDD is a well known type of trenchless drilling, in the drilling project, we will need the horizontal directional drilling rig. In order to protect the rig bit and make it easy for drilling, a good number of drilling mud will be used. Therefore, the need for mud system is emerged. During a large treating capacity trenchless drilling project, mud system is only partial unit of it. We can also find drill rig, mud pump and other equipments. Continue reading »

written by GN Desander Desilter \\ tags: , , ,

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