shale shaker

Recently GN solids control shipped one batch of shale shaker and decanter centrifuge for an international environmental protection company. The equipments model number is as below:

  1. Shale Shaker: GNZS594-HB, the 4 panel shaker screens with dimension 585x1165mm, which is made of composite material frame durable shaker screens. The vibration motor and starter are purchased from USA local company to meet the local explosion proof standard. The shale shaker is to separate coarse solids from the slurry/ sludge/ drilling fluids/ oil sludge.
  2. Mud Cleaner: GNZJ594-2S12N, the bottom shale shaker is a 4 panel shaker screen which is same with GNZS594-HB, combined with 2ea 10 inch desander cone and 12ea of 4 inch desilter cone. The mud cleaner is used after shale shaker, the desander cone separation cut point is 45 microns, the desilter cone cut point is 25 microns. Over 80% of the solids bigger than 25 microns will be separated out. If much finer solids still need to separate, decanter centrifuge can be used.
  3. Decanter Centrifuge: GNLW553-VFD, the separation cut point is 2~5 microns. The centrifuge bowl diameter is 22 inch, the bowl length is 71 inch (1800mm), the max G force is 2719G and the max speed is 3000rpm. The max gearbox torque is 12000 N.M. and gearbox ratio is 35:1. The differential speed is 0~45 rpm. And designed treating capacity is 500gpm. The decanter centrifuge is drived by VFD control panel, with world famous brand inverter of main motor, back drive motor and pump motor.
    The shale shaker, mud cleaner, decanter centrifuge are installed on the customized dimension mud tank, the discharged fluids dropped into the mud tank, the feeding pump ( centrifugal pump) transfer the treated fluids to desander cone and desilter cone, the clean fluids are transferred to decanter centrifuge by screw pump.

As one of the most professional shale shaker manufacturer in China, GN solids control can produce not only linear motion shale shaker, but also dual motion shale shaker, recently one batch of dual motion shale shaker are shipped for international drilling company.
The dual motion shale shaker can work under both linear motion and Progressive elliptical motion according to different drilling depth and drilling fluids requirement. The vibration motor can be adjusted on the starter.


The features for linear motion shale shaker:
Higher G force, higher screen conductance, higher treating capacity, direct action on the drilling cuttings, bigger throw vibration angle, the cuttings stay time on the shaker screen is shorter, it is suitable for the drilling fluids with low viscosity, high fluids flow, high solids content, coarse and hard drilling cuttings, especially it is widely used for first spud, second spud of the oil drilling rig.
The features of Progressive elliptical motion shale shaker:


Slow action on drill cuttings, the cuttings stay time on the shaker screen is longer, the screen opening is not easy blocked, the drilling cuttings not easily crushed. It is suitable for the drilling fluids with high viscosity, low flow rate, high solids content, and easily crushed drilling cuttings. Especially it is widely used for third spud, fourth spud of the oil drilling rig.
Whichever the vibration motion is used, the operator can choose it according to different drilling fluids. The shale shaker with 4 panel shaker screen of composite material frame, as one of the most shaker screens manufacturer in China, most of GN produced shaker screen is with composite material frame, we can produce screen mesh size from API 20 to API 300 as per your requirement, and we have stock for the best sold model replacement shaker screens, for urgent requirement, the delivery can be much faster.

One unit of oil sludge treatment system for China client is shipped out recently, the design treating capacity is 15m3/h. A complete 15m3/h oil sludge treatment system made by GN solids control including vacuum pump unit, pre-mixing tank modular, shale shaker modular, chemical dosing unit, decanter centrifuge and 3 phase separation centrifuge modular. According to different material, we can provide customized design to add or remove the modular. The compact design in modular is for convenient operation and transportation.

  1. Vacuum pump is widely used to transfer waste oil, oil tank bottom cleaning sludge, drilling cuttings, drilling fluids, soils, sand, it is 100% air operated pump without electricity power.
  2. The vacuum pump transfer the oil sludge to pre-mixing tank modular, which with heating pipeline inside the mud tank to heat the oil sludge up to 60 degree. With chemical jetting and heating process, the emulsified oil can be easily treated and remove from the solids.
    For free oil sludge, it can be treated by shale shaker modular directly.
  3. The shale shaker modular with sealing cover and internal spray system is to separate the coarse solids from the oil sludge and reduce the solids content, it will protect the decanter centrifuge in the next step and extend the working life of the centrifuge screw propeller. If the solids content is too high, the screw propeller will be easily damaged; and the big solids will be easily block the centrifuge bowl.
  4. The decanter centrifuge can separate the fine solids from the oil sludge to reduce the solids content below 5%, by using proper demulsifier and chemicals, the separation cut point is up to 1 microns. The fluids treated by decanter centrifuge flow to the buffer tank then flow to the disc centrifuge, the disc centrifuge can separate oil, water and solids .

As a professional manufacturer of mud recycling system for HDD & CBM & TBM, our mud recycling system have been widely used for international big projects. Here are some typical projects case study:
Case study 1:
Project period: Year 2014 ~ 2019


Customer status: CHINA PETROLEUM PIPELINE BUREAU China-Russia gas pipeline Trenchless Project. CPP is the largest petroleum pipeline engineering company in China and the largest contractor for the China-Russia gas pipeline project. Over 20 units of GN mud recycling system are working for CPP projects. And 5 of these HDD mud recycling system are used in the China-Russia gas pipeline project.
Project status: The 3,000-kilometre (1,850-mile) pipeline, which was the world’s largest construction project ,will supply China with 38 billion cubic meters (1.3 trillion cubic feet) of gas annually when fully operational in 2025. Russian leader Vladimir Putin and Chinese counterpart Xi Jinping hailed the “Power of Siberia” pipeline as a symbol of cooperation.
Case Study 2:
Project period: Year 2016 ~ 2018
Customer status: Hong Kong Airport


Project status: HDD Trenchless mud cleaning and recycling for 5.2 KM Aviation fuel Pipeline installation. The mud recycling system specification including:
2 sets of 1500gpm mud recycling system, including 6 sets of GNZS703 Shale Shaker, 2 GNZJ703E-3S16N mud cleaner, 2 mud tanks, and centrifugal pumps and screw conveyor.
The working process of the mud cleaning system is : the submersible slurry pump feed the slurry to shale shaker, the coarse solids are separated out from shale shaker screens, the clean fluids dropped into shaker tank, the centrifugal pump feed the clean fluids to mud cleaner desander cone to separate solids bigger than 45 microns, the clean fluids dropped into desander compartment, the centrifugal pump 2 feed the clean fluids to desilter cone to separate solids bigger than 20 microns, the clean fluids are storage into the desilter tank.

Coronavirus disease (COVID-19) is an infectious disease caused by a new virus. Last updated: March 29, 2020, 09:58 GMT,Total Coronavirus Cases: 668,705,total death: 31,065, Recovered:143,107.

China also suffers huge losses from Coronavirus since January, 2020. People are suggested to stay at home for several week until the conoravirus is under control in China basically. Now all the Chinese are suggested back to work and recovery production and back to normal life, in the meanwhile, temperature checking is everywhere when you enter into a building or community, and movement tracking is necessary to be reported for quickly track the source of infection, and we are still required to wear disposable mask when you are in public area, including office. GN solids control are permit to recovery production partially since Feb. 20th, and until March 15th our production is recovery 100% as per government’s instructions.
As one of the top manufacturers of solids control equipments and drilling waste management equipments in China, GN solids control is also worked as a responsible company, we keep goods reputations during the past 10 years , and we got repeat orders from our valuable clients every year. Many clients from countries and regions with Coronavirus severe epidemics request us for Masks, it becomes more and more difficult to buy masks in their country. To support our VIP clients in the most tough period and flighting coronavirus together, we can provide Free Medical Face Mask for our clients in the world. If you need medical disposable masks, pls contact your direct sales or email to sales@gnsolidscontrol.com for Reservation.


GN solids control is trying our best to finish the existing order and ship them as soon as possible, also we are preparing stock for the most popular equipments like shale shaker, decanter centrifuge, vertical cuttings dryer, shaker screens frames( so that we can fastly finished the composite material shaker screens orders).