Last week, GN finished the manufacturing of several units poorboy degassers and shale shakers that ordered by an Egypt client. Now the order has been packed well and waiting for delivery.
Manufactured per API and ISO standard, GN pooboy degasser could be used in underbalanced condition drilling to prevent a dramatic pressure surges. For safety consideration, the poorboy degasser is seen as indispensable equipment on oil gas drilling site, especially for deep drilling rig. The poorboy degasser is also named as mud gas separator.

The poor boy degasser is always installed beside the mud system. In normal condition, the drilling mud coming out of the well will flow directly to the shale shaker unit for cuttings removing. In case gas layer was intruded by drilling tools, a blowout might happen. This is the time the poor boy degasser will be applied to relieve the high pressure of the gas- invade drilling fluids and separate the gas that might be flammable or hazardous.

GN’s mud gas separator has a simple structure with fluid inlet at upper part of the vessel. Inside the vessel, several baffle plates are welded on the inner wall of the vessel. The drilling fluids coming from the inlet will impact on the baffle plates so as to release the gas in the fluids.

Gas accumulates and then is vented out from outlet on top of the vessel. The treated mud will fall down and accumulate at the lower part of the vessel, and then discharged out to the shale shaker unit. At bottom of the vessel, there is a drain valve for cleaning of the poorboy degasser.

GN shale shaker has below features to provide excellent performance to client
1. Simple structure with strong vibration deck for easy operation
2. Composite frame screen for long working time and convenient replacement
3. Patented embedded sealing technology to prevent fluids leakage
4. Stainless steel screen support frame for better anti-corrosion performance

To get more information on GN solids control equipment, please go to GN website or make a call for assistance.

Hebei GN Solid Control Co., Ltd. is located in Chaobai River Industrial Zone in the east of Beijing. It focuses on the research and development of mud separation equipment, mud recovery system, waste slurry treatment system, sludge treatment system and diversified mud transportation equipment. “GN Solid Control” has developed into a leading brand in the industry through unremitting efforts. The products manufactured are sold in more than 70 countries and regions around the world. GN Solid Control established a branch in Houston, USA in 2013: GN Solids America, the first Chinese manufacturer of mud solid-control equipment in the United States. In addition, GN Solid Control has established cooperative branches in Russia, Australia, the Middle East and Latin America. Our international brand: GN Solids Control is a well-known brand in the industry, and its products and services are highly praised by domestic and foreign customers.


The mud recovery system produced by GN Solid Control is currently the largest manufacturer and largest exporter of mud recovery systems in China. Its products have obtained the long-term cooperation strategy agreement of the country’s largest non-excavation construction unit in the non-excavation industry.


First, GN solid control G series products are divided into the following seven standard models:

  1. GNMS-200G processing capacity is 200GPM, 50m3/h


  1. GNMS-350G processing capacity is 350GPM, 80m3/h


  1. GNMS-500B/G/GL processing capacity is 500GPM, 120m3/h


4, GNMS-1000G processing capacity is 1000GPM, 240m3 / h


5, GNMS-2000GL processing capacity 2000GPM, 480m3 / h


Second, the main application areas of GN solid control G series mud recovery system:

  1. Non-excavation horizontal directional crossing/HDD


  1. Coalbed methane drilling


  1. Large, medium and small shield engineering


4, water wells, geothermal wells


  1. Mining drilling engineering, etc.

According to different projects, GN’s engineering team will design a corresponding solution to achieve the best processing results.

More question,welcome contact GN solids control

This week, GN arranged the delivery of one set compact design oil sludge treatment system to Client from Europe. The client firstly saw GN oil sludge treatment system at the Beijing CIPPE show this March. After two times factory inspection and business communication, the clients placed order.

Please click below link to watch the working video of this oil sludge treatment system.

This skid mounted system is used to recover the oil from oily sludge coming from various sources like drilling waste cuttings, refinery waste, and oil tank remains etc. It is consisting of chemical dosing, premixing, 2-phase separation and 3-phase separation modules.

For economy purpose, client instructed to replace the automatic polymer dosing system by a simple mixing tank in where client can pour the liquid or powder chemicals for making the chemical solution. The solution will be pumped into the premixing tank for demulsfication to remove the oil from solids. The premixing vessel is equipped with heating line better performance.

A mini shale shaker and a mini decanter centrifuge are the main equipment in the 2-phase separation process. Sludge after a while demulsfication in premixing tank would be transferred to the shaker unit for large size solids removing; liquid with fine solids will be pumped to the decanter centrifuge for fine solids separation. Most of the solids can be removed in this process; the liquid discharged from the decanter centrifuge is consisting of water, oil and little amount of solids all of that will be collected in a buffering tank waiting for 3-phase separation.

In 3-phase separation procedure, a disc type centrifuge is used to separate the oil, water and ultra-fine solids. By using this oil sludge treatment system, the oil could be recovered from the waste so as to the waste discharge would be greatly reduced. This is beneficial for environment protection and also good in obtaining economic profit.

This compact oil sludge treatment system could be used as a pilot unit to prove the oily sludge can be treated by this technology, once the testing result was satisfying; GN is able to provide the system with larger capacity. Actually, the result is proved onsite, and the client also placed an order for 15 cubic meters capacity system in the same time.

This week, the fabrication of one unit fully hydraulic decanter centrifuge has been completed. This unit decanter centrifuge is ordered by a client from Middle East. Decanter centrifuge is one of GN main products. With more Ten years’ experience, GN has developed a series decanter centrifuges that can be applied in drilling site, industrial waste treatment and other separation projects.

Besides the electrical motor drive centrifuge, the fully hydraulic decanter centrifuge is a well-developed model. Different from the electrical centrifuge, GN fully hydraulic drive decanter centrifuge is working by using a hydraulic pump to feed hydraulic oil to drive the bowl and scroll. Below some advantages of GN FHD decanter centrifuge:

1. The complete unit is compact structure design with centrifuge, hydraulic driving system and the control system in one skid for easy rig up. The PLC system with smart control and safety protection is guarantee for clients’ easy operation.
2. In this unit, the full hydraulic drive system could be used in high temperature ambient for heavy mud with flexible bowl and differential speed. This greatly ensures the working safety and multipurpose application of the centrifuge unit like in barite recycling in mud system, fine solids separation waste mud management.

3. GN fully hydraulic drive decanter centrifuge is designed with adjustable bowl speed, differential speed and liquid pond depth for discharging different dryness of solids for different slurry conditions to meet operators’ requirements.
4. The rotation part of the centrifuge is processed by high precision CNC machine and balanced by high speed balancing machine for reliable performance. The centrifugal casting bowl is made of duplex stainless steel 2304, Tungsten carbide material for protection of screw propeller, mud inlet distribution port and solids discharge port, SKF bearings to give the centrifuge maximum operation life with less maintenance.

GN centrifuge unit now could be used in drilling mud recycling, waste management treatment, mining separation and many other industries. For more information on GN hydraulic drive decanter centrifuge, please feel free to contact with GN.

Screw conveyor is widely used in oil drilling site for waste material transferring. This week, GN completed the fabrication of a batch screw conveyers ordered by a client from Africa. After the factory delivery inspection, these screw conveyers would be shipped out.

Where the screw conveyor would be positioned on drilling site
1. For drilling waste cuttings collection and transferring. In mud system, the drilling fluids coming out from the well will be feed into the shaker, cyclone and decanter centrifuge step by step. In each state, the drilling cuttings with different size will be discharged out from fore mentioned equipment. The screw conveyor is the ideal equipment to collect all the waste cuttings and make a pit-less mud recycling system. For this purpose, several unit screw conveyor would be installed beside the mud tank and under the separation equipment discharge chute with the top cover open for easy collection.

2. For waste cuttings treatment and transferring. The collected waste cuttings still has large content liquid that can be recovered. According to the position of the cuttings dryer unit, operators can adjust the location of the screw conveyer for feeding the waste cutting into the dryer unit. More drilling fluids would be recover, less waste will be discharged. In the meanwhile, an extra screw conveyer unit can be positioned under the discharge port of the dryer unit so that can transfer the treated cuttings out of the system.

GN screw conveyor is designed to offer an efficient, low cost, cutting transportation system both offshore and onshore drilling installation. Per client’s requirement, the variable frequency motor can be adopted for freely speed control. For safety consideration, the whole body of the screw conveyor is fitted with protective grating or cover to prevent foreign matters entering the conveying system. For more information on the screw conveyor, please feel free to contact with GN.