Recently one batch of drilling mud solids control decanter centrifuges are ready for shipment to Africa client. Drilling mud solids control decanter centrifuge produced by GN solids control has been widely used in over 70 countries in the world, the decanter centrifuge is installed after desilter or mud cleaner, there are 2 types decanter centrifuges can be used for drilling fluids treatment, including middle speed decanter centrifuge for barite recovery and high speed decanter centrifuge for low gravity solids separation. Sometimes the client will buy variable frequency drive decanter centrifuge which can be used as both middle speed decanter centrifuge and high speed decanter centrifuge. The decanter centrifuge can be also installed on a telescopic skid which is separated from solids control system to treat the drilling fluids, the treated clean fluids will flow back to mixing tank or reserve tank to prepare for new drilling fluids.

Submersible slurry pump or screw pump can be used as decanter centrifuge feeding pump, it will be decided by space of installation.
GN decanter centrifuge features are as below:

  1. The centrifuge main bowl is made of duplex stainless steel 2205 or 2304 by centrifugal casting which is better than SS304 or SS316L.
  2. The solids discharge port and mud distribution port is made from tungsten carbide inserts, the anti abrasion resistance will be better, and it is interchangeable.
  3. The screw inside the bowl is protected by interchangeable tungsten carbide tiles for longer working life and easy repair
  4. The screw is made of stainless steel with heat treatment, the open impeller design will improve the centrifuge capacity.
  5. The bearing are SKF brand bearing for reliable operation
  6. The bowl and screw 3 stage balancing process, including low speed balancing, operation high speed balancing and assembly balancing, which will ensure the enough balance of centrifuge.

Recently 2 sets of HDD mud cleaning system are ready for shipment to Sinopec. The first one is 240m3/h (1000GPM) HDD mud cleaning system, the second one is 120m3/h (500GPM) HDD mud cleaning system.
240m3/h (1000GPM) HDD mud cleaning system


Including 2 sets of GNZS703F shale shaker, 1 set of GNZJ70F-2S12N mud cleaner with 2 units of centrifugal pump as desander, desilter feeding pump, 1 unit of big bowl big volume dewatering centrifuge GNLW554EP-VFD, jet mixing unit 1 unit, mud tank 4 units. The shale shaker is the first phase cleaning equipment to separate the coarse solids from HDD drilling mud, the mud cleaner with desander cone, desilter cone and bottom shale shaker, the desander cone is the second phase cleaning equipment to separate solids cut point 45~75 microns, the desilter cone is the third phase cleaning equipment to separate solids cut point 25~45 microns. The big bowl dewatering centrifuge mechanical separation cut point is 2~5 microns, GNLW554EP-VFD with bowl diameter 22 inch, bowl length 91 inch, the designed max treating capacity is 600gpm, typical treating capacity is 480gpm, max G force is 3051G, the typical G force is 2412G, with proper chemical dosing system, most of the ultra fine solids can be separated out. After long time operation, many fine solids will accumulated in the HDD drilling mud, the used drilling fluids treated by desilter cone can not be reused to prepare for new drilling fluids, the dewatering centrifuge should be used to separate ultra fine solids.


120m3/h (500GPM) HDD mud cleaning system
Including 1 set of GNZS703F shale shaker, 1 set of GNZS70F-1S8N mud cleaner with 2 units of centrifugal pump as desander, desilter feeding pump, 1 unit of dewatering centrifuge GNLW452D, jet mixing unit 1 unit, mud tank 2 units.


If you need customized HDD mud cleaning system, pls contact with GN solids control.

Three units of dual motion shale shaker are ready for shipment to offshore drilling company. The dual motion shale shaker including vibration mode of linear motion and elliptical motion, there is vibration mode switch installed on the shale shaker starter which can change the vibration mode. When they need to change the vibration mode according to drilling conditions, the shaker should be stop for safe adjustment. 2ea 2.5HP vibration motors drive the shale shaker and produce up to 7.6G force for linear motion, up to 5.23G for elliptical motion, which is adjustable. The shaker deck angle can be adjusted from -1°~+5° and it can be adjusted synchronously by both sides,. The shaker screen is fixed by wedges for fast screen replacement. The dual motion shale shaker shale shaker can be made as single deck shale shaker and dual deck shale shaker, 2 units or 3 units shale shakers can be assembly as tandem shale shaker or triple shale shaker.

The linear motion is apply to drilling fluids with low viscosity, high flow, high solids content, big size solids , hard drill cuttings.

The elliptical motion is apply to drilling fluids with high viscosity, slow flow, high solids content and easy broken drilling cuttings.


Composite material frame shaker screen are installed on the shale shaker, GN produced OEM shaker screens are produced compliant to API RP13C, we can provide shaker screen wire mesh configuration from API 20 to API 325. The composite frame screen is repairable to save cost, compared with metal frame shaker screen, the composite material frame useable area is 10% to 20% larger, it is rust resistant for longer time storage up to over 5 years.
If you need dual deck / single deck dual motion shale shaker or linear motion shale shaker, pls contact with GN solids control.

GN solids control will participate in CIPPE 2022 Petroleum Exhibition held in Shenzhen, for more information of the exhibition, pls refer to http://www.cippe.com.cn/cn/
General information of CIPPE 2022 Petroleum exhibition:
Exhibition Name:The 22nd China International Petroleum & Petrochemical (CIPPE)
Exhibition time: Early August, 2022 ( pls check with GN solids sales for exact time)
Exhibition address:Shenzhen Convention and Exhibition Center (Futian)
GN Stand No.:E1226
What equipments we will show at CIPPE?

Linear motion shale shaker with ViST screen, ViST vacuum screen technology is to work together with shale shaker, the function is to reduce drilling waste and recycle drilling fluids. In a result, ViST maximize the recycled drilling fluids volume and generates dryer cuttings. By applied with ViST, the user can save money for drilling fluids and waste management.

Decanter Centrifuge, GN produced decanter centrifuge can be applied to waste water treatment, solids control system drilling fluids treatment, drilling waste treatment, oil waste treatment and other solids liquid separation projects. We can produce decanter centrifuge from 9 inch to 30 inch bowl diameter, according to client’s requirement, we can produce fixed speed or variable frequency drive control panel.

Vertical cuttings dryer, one of the most popular model is GNCD930 vertical cuttings dryer, the lastest version is G version, we have updated the design according to user’s feedback and technology improvement.

Solids vacuum pump, the 100% air operated vacuum pump can be used at hazardous area and electricity limited area. The compact design of the vacuum pump allowed it to be installed inside the oil tank for easier picking up of the oil sludge from tank bottom, without needing people entry. The solids vacuum pump can transfer different kinds of materials, such as dredging slurry, oil sludge, material with solids content up to 80%, material with big solids up to 75mm.
Welcome to meet us at CIPPE.

Recently one unit of oil based mud cuttings treatment system is ready for shipment to overseas client. The system consists of 2 units of decanter centrifuge, 1 unit of vertical cuttings dryer, 1 unit of container for heat preservation operation in Winter and convenient transportation. One unit of decanter centrifuge is used for solids control system, one unit of decanter centrifuge is used for vertical cuttings dryer system.


The vertical cuttings dryer is installed on the lifting frame for smooth solids discharge, the treated solids with oil content on the cuttings below 5%, the discharged solids can be disposal or for landfill or to be sent to thermal desorption unit for further treatment. The oil based drilling mud cuttings are transferred from waste pit, or 1 unit of horizontal installed screw conveyor collect the oil based drilling cuttings from solids control shale shaker, another unit of screw conveyor is installed slantly to transfer the oil based drilling cuttings to vertical cuttings dryer feeding port. The fluids flow to fluids catching tank, the decanter centrifuge feeding pump will feed the fluids to one of the decanter centrifuge for fine solids separation 2~5 microns, the treated fluids can be reused to prepare for new drilling fluids.

All the equipments are installed inside the standard container with windows, doors for heat preservation operation in Winter, there is space remained for vertical cuttings dryer, decanter centrifuge and feeding pump maintenance. The high speed decanter centrifuge model number is GNLW363D, the bowl diameter is 14 inch, the bowl length is 50 inch, the max speed is 3900rpm, the normal operation speed is 3200rpm, the max G force is up to 3063G. The high speed decanter centrifuge can be applied for solids control system, drilling waste treatment system, oil sludge treatment unit, dewatering centrifuge and other applications of solids liquid separation.