Category: HDD mud recycling system

GN Trenchless Mud Recycling Systems for Overseas Engineering Company

As global infrastructure development accelerates, trenchless technology and tunnel boring machine (TBM) operations have become indispensable for constructing pipelines, utility networks, and underground transit systems with minimal surface disruption. A critical factor determining the success, cost efficiency, and environmental compliance of these projects is effective drilling fluid and slurry management. GN Solids Control, a professional manufacturer of solids control equipments and customized mud tank system, has established a strong international presence by delivering customized trenchless mud recycling systems and TBM slurry separation plants to overseas engineering companies all of the world.


GN trenchless mud recycling systems are engineered to recover and reuse drilling fluids (typically bentonite mud) in horizontal directional drilling (HDD), pipe jacking, and piling operations. These systems reduce waste disposal costs, minimize environmental impact, and protect high-pressure drilling equipment from abrasive solids.

The GN C Series represents a flagship solution for medium to large-scale drilling operations. Unlike basic economy models, the C Series integrates mud recycling, storage, and mixing functions into a single, self-contained package, eliminating the need for separate storage tanks and mixing equipment. Available models include:

GNMS-200C: 200 GPM (50 m³/h)
GNMS-400C: 400 GPM (100 m³/h)
GNMS-600C: 600 GPM (150 m³/h)
GNMS-1000C: 1000 GPM (200 m³/h)

For slurry shield tunneling and pipe jacking projects, GN manufactures complete TBM slurry separation plants designed to handle the large volumes of slurry mixed with sand and stones generated during excavation. These plants are engineered to deliver high-performance solid-liquid separation, maintaining tunnel face stability, reducing cutter wear, and ensuring smooth TBM operation.

GN TBM slurry separation plants are available in multiple configurations to suit different tunnel diameters and project scales:
GNTBM-260B: 260 m³/h processing capacity
GNTBM-360B: 360 m³/h processing capacity
GNTBM-500B: 500 m³/h processing capacity

If you need a customized solution for mud recycling system and TBM slurry separation plant, pls contact with GN solids control.

GN Drilling Fluids Mixing and Storage Tank for International oilfield service Company

Several sets of drilling fluids storage tank and mixing tanks are ready for delivery to our clients.
One set of mud tank system are customized storage tank for oil drilling rig, each tank with 3 units of mud agitators, mud gun, handrails, stairs and sun proof cover.

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The mixing tanks are skid mounted vertical cylindrical tanks with one unit mud agitator on top for mixing, one set hopper and one mixing pumps are installed on a separate skid, the mixing pumps are connected in parallel, the mixing pump can mix the mud from any of the tank, and the drilling fluids after mixing can be transferred to any of the tanks.
Each set of mud tanks are manufactured in strict accordance with international standards, utilizing high-grade materials and advanced welding techniques to guarantee durability, corrosion resistance, and leak-proof performance. Prior to release, every tank underwent rigorous pressure testing, structural integrity checks, and functional validation.
Our logistics team is coordinating shipping schedules to ensure safe and prompt delivery. Clients can expect to receive detailed shipping notifications and tracking information shortly.

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GN Solids Control is a leading provider of drilling fluid solids control system, including storage tanks, mixing tanks, treatment muds and solids control equipment. We are dedicated to delivering robust solutions that enhance drilling efficiency and safety worldwide. We can design customized solids control system and mud tank system for different model drilling rigs, like 750HP, 1000HP, 1500HP, 2000HP, 3000HP drilling rig, and also mud recycling system for HDD, CBM, geothermal drilling, water well drilling and other drillings.
Also we can provide complete line of solids control equipments, including drilling fluids shale shaker, mud cleaner, desander, desilter, vacuum degasser, centrifugal degasser, decanter

GN Solids will attend Trenchless Technology Exhibition in Tianjin

GN solids control will participate in Trenchless Technology Exhibition in Tianjin. The exhibition information is as below:


Exhibition Name: The 29th China International Trenchless Technology Conference and Exhibition (ITTC2026)
Exhibition location：Tianjin National Convention and Exhibition Center
Date: April 22th to 24th, 2026
GN Stand No.：B27
What equipment will be showed at the ITTC 2026 exhibition?
1. HDD mud recycling system: GN HDD Mud Recycling System (Horizontal Directional Drilling Mud Recycling System) is a modular solids control solution designed to recover and reuse drilling fluids (bentonite mud) in trenchless industry. It reduces waste disposal costs, minimizes environmental impact, and protects high-pressure pumps by removing excavated solids .The system typically integrates multi-stage separation and auxiliary components on a single skid mounted mud tank or trailer mounted mud tank. Here is the standard configuration breakdown: the 1st stage: shale shaker to separate coarse solids; the 2nd stage: desander cone to separate the cut point 45~75 microns; 3rd stage: desilter cone to separate cut point 25~45 microns; the 4th stage: decanter centrifuge to remove ultra fine solids; The other equipments including customized design mud tank, mixing hopper, mixing pump, electrical control system, lightings, mud agitators, etc.


2. TBM slurry separation system: GN TBM (Tunnel Boring Machine) Slurry Separation System is a high-capacity solids control solution engineered specifically for Slurry Shield TBM and Microtunneling projects. It is designed to separate excavated soil and sand from bentonite slurry, allowing for continuous recycling of the drilling fluid and efficient management of muck disposal. GN offers standardized skid-mounted or containerized plants based on TBM diameter and excavation rate: GNTBM-260 (260m3/h), GNTBM-360 (360m3/h), GNTBM-500 (500m3/h), GNTBM-800B (800m3/h), GNTBM-1000B (1000m3/h), GNTBM-1500B (1500m3/h) and higher treating capacity TBM slurry separation plant up to 3000m3/h for Large Diameter Road/Rail Tunnels.


3. Drilling fluids decanter centrifuge
For more information about the exhibition, pls visit the website: https://en.cstt.org.cn/index.html.

4 Sets GN Mud Cleaning System for Europe HDD company

Recently 4 sets of GN mud cleaning system are ready for delivery to Europe HDD company, including 3 sets of GNMS-200C HDD mud recycling system with treating capacity 200gpm, 1 set of GNMS-1500 HDD mud recycling system with treating capacity 1500gpm.


GNMS-200C HDD mud recycling system is a 200gpm self contained mud recycling system, the cut point is 25 microns, the total volume is 5m3. It is a 2 phase cleaning mud system, the first phase cleaning is double deck shale shaker bottom screen for coarse solids separation, the second phase cleaning is 4pcs of 4 inch desilter cone with mud cleaner. 2 units of centrifugal pumps in same model as desilter feeding pump and a mud mixing pump.


GNMS-1500C HDD mud recycling system is a customized 1500gpm mud recycling system, the cut point is 25 microns. Except for high configuration mud recycling system, GN solids control also produce compact design mud cleaning unit for trenchless HDD project, Bored pile project and micro TBM project, diamond core drilling, water well drilling project. GNMS-200K mud cleaning unit with 200gpm capacity, GNMS-500K with 500gpm capacity, GNMS-1000K with 1000gpm capacity.


Compared with the compact design mud recycling system and the self contained mud recycling system, the table below breaks down the key differences between the two types of systems:

Feature Compact design mud cleaning unit Self contained mud recycling system
Primary function Focus on cleaning Performs mud cleaning, mixing and storage
System complexity Simpler, often a two stage separation process More complex, typically a 4 stage separation process for finer solids separation
Footprint Smaller, skid mounted design for easy transportation Larger, skid mounted or trailer mounted with bigger tanks for greater fluids volume
Application For smaller jobs, supporting smaller drill rig Suited for middle sized to large projects requiring high volume, fine cleaned mud.

Three sets of GN mud recycling system and 40 units pumps shipped to HDD clients

Recently three sets of GN mud recycling system and 40 units of slurry pumps are shipped to HDD clients.


GN Solids control successfully delivered 3 sets of GNMS-1000 mud treatment systems and 40 units of strong wear resistant slurry pumps to HDD (trenchless) customers, to enhance their overall trenchless construction efficiency.
Each set of mud cleaning system integrates one shale shaker, one mud cleaner, one unit of mud tank, centrifugal pump, and mud agitator, enabling mud cleaning and mixing, as well as efficient mud storage, thus meeting the needs of complex working conditions of trenchless projects.
The 40 sets of submersible slurry pumps feature high chromium alloy pump casings and impellers, offering strong wear resistance and a maintenance free design. They are specifically designed for slurry transfer in non excavation mud pits, to ensure uninterrupted construction.


GN Solids Control- From separation to transportation, we provide a one stop mud cleaning solution to our customers, helping to reduce engineering costs and enhance engineering reliability.


GNMS-1000K mud cleaning unit technical specifications are as below:
The treating capacity is 240m3/h ( 1000gpm), the separation cut point is 40 microns, the function of the mud system is cleaning, without mixing and storage, if the client need mud mixing function and also storage capacity, one extra storage tank with mud mixing hopper and mud mixing tank can be provided separately, and the client can prepare storage tank locally. One double deck mud cleaner is installed on the fluids catching tank, the bottom layer shaker screen is used as coarse solids shale shaker, the top layer shaker screen works as mud cleaner bottom screen, 2 units of 10 inch desander cone are installed on top of the double deck shale shaker.
If you need a customized HDD mud cleaning solution, pls contact with GN solids control.