Mini solids vacuum pump and mini shaker are ready for shipment to South America customer. The mini solids vacuum pump is designed convenient movable for flexible operation. There are automatic mode or manual mode for user’s selection. If automatic mode is selected, running the vacuum pump for several loops then set the timer according to the experience to fit the material condition, the running time can be adjusted and controlled by 2 pneumatic timers. If manual mode is selected, the user need to discharge empty the cavity manually. Before delivery, the timers are set at 10s suction and 10s discharge. If the cavity is full very quickly, just reduce the suction time. Conversely, longer the suction time.
The working procedure when manual mode is selected.

Connect to air supply and select manual mode.

Switch the knob to discharge position to empty the cavity.

Put suction inlet pipe into the material, switch the knob to suction position.

If cavity is almost full, switch the knob to discharge position again.
The mini vacuum pump can be used to transfer material with high solids content, and it can be used to transfer powder material such as sand, dust. It also can be used to clean fluids from drill floor, decks, pipe racks, mud rooms and drains, tanks and mud spill.


The mini shale shaker model number is GNZS752-DZ, the screen panel is 2pcs , and screen size is 750x900mm, screen area is 1.35m2, which is drived by 2ea 1.0KW vibration motor. The G force is adjustable and up to 7.5G, the deck angle is +2º. Polyurethane material screen or composite material frame shaker screen can be installed on the shale shaker. The mini shaker is widely used to separate solids from liquid by using different mesh size shaker screen.

Recently one batch of drilling waste treatment decanter centrifuge, OBM vertical cuttings dryer , drilling cuttings screw conveyor and feeding pump are ready for delivery to Middle East customer. The equipments list including:


9 units of drilling waste treatment decanter centrifuges GNLW363D-GP
3 units of oil based drilling cuttings treatment vertical cuttings dryer GNCD930
12 units of drilling cuttings transfer screw conveyor, which is customized design for the client to proper meet the installation purpose.
12 units of screw pump as centrifuge feeding pump and vertical cuttings dryer flushing pump


The standard oil based drilling cuttings treatment system working process is that the screw conveyor will be installed along with solids control system shaker tank, to collect drilling cuttings from primary shale shaker, and transfer the drilling waste to solids discharge port and drop into another screw conveyor which is installed slantly and transfer to vertical cuttings dryer feed port. To separate the solids with oil water mixture fluids, the oil content on the cuttings will be below 10%, sometimes it is even below 5%, which can meet local disposal requirement. the screw pump will be as flushing pump of vertical cuttings dryer to avoid screen basket blocking by oil waste, the fluids will flow to intermediate tank and centrifuge feeding pump will feed the fluids to oilfield decanter centrifuge to separate fine solids from drilling fluids, which will flow back to mixing tank to prepare for new drilling fluids.


The client can produce mud tank locally or produce telescopic skid to install the decanter centrifuge and vertical cuttings dryer on top for convenient operation and discharge. The drilling waste management system can be applied for onshore drilling and offshore drilling with different explosion proof motor and control panel. If you need customized drilling waste management system, pls contact with GN solids control.

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.