vertical cuttings dryer

Recently GN solids control shipped one batch of pitless drilling waste management equipments for International oilfield service company, including high G drying shaker package, sludge vacuum pump, cuttings dryer.


The vacuum pump is 100% air operated pump to transfer drilling waste from waste pit to vertical cuttings dryer ( for OBM & SOBM drilling waste) and high G drying shaker modular ( for WBM drilling waste). No need electricity power, it is suitable for hazardous area application. The suction horizontal distance is up to 50m, discharge distance is up to 500 ~1000m. The max solids size to be transferred is up to 50 ~ 75mm based on different model, and the max solids content is up to 80%. There are 2 operation mode for option, automatically and manually working, the user can choose different operation mode for easy operation. The compact design structure is for easily installation and movement.


The high G drying shaker is normally used for water based mud drilling waste treatment project, the max G force is up to 8.0G so that the discharged solids will be much drier for easy disposal. The clean fluids drop down into the mud tank, the centrifuge feeding pump can transfer the clean fluids to decanter centrifuge for further treatment.


The vertical cuttings dryer is widely used to treat the oil based mud drilling waste management project, we have 2 models of vertical G dryer for option, GNCD930E with treating capacity 40 tons/ hour, which is the best sold model for standard drilling waste management system. The discharged solids with oil content on the cuttings is below 5%, it can be landfilled or disposal directly once it can meet the environmental protection regulations in the client’s country. The discharged fluids flow to a buffer tank, the clean fluids can be transferred by centrifuge feeding pump to decanter centrifuge for further treatment.

GN solids control shipped several units of vertical cuttings dryer and decanter centrifuge to Russia with customized painting color. As the expert of solids control & drilling waste management in China, we have exported a lot of vertical cuttings dryer and decanter centrifuges to Russia area.


The vertical cuttings dryer and decanter centrifuge is the major equipment of zero discharge system for oil based drilling cuttings treatment. The working process is as below:
The screw conveyor collect the oil based drilling cuttings from the shale shaker of solids control system and discharged to 2# screw conveyor, the 2# screw conveyor is installed slantly and transfer to vertical cuttings dryer top open feeding port. The vertical cuttings dryer dry the drilled solids from oil based cuttings by centrifugal force. The screen basket traps the fluids and accelebrates them up 900rpm and G force is up to 420G. The fluids is discharged from the liquid discharged port and flow to intermediate tank, the feed pump transfer the liquids to decanter centrifuge to separate fine solids, the cut point is 2~5 microns. The clean fluids is recovered by the catch tank or connect the pipeline back to solids control system for reuse.


VFD decanter centrifuge should be applied for drilling waste management system, which with 3 motor frequency VFD, main motor, back drive motor, pump motor. We use ABB brand inverter for easy outsourcing when need to be replaced, all the other electrical components are also with ABB, Siemens, Schneider with good quality. Our VFD control panel is positive pressurized VFD control panel with PLC smart control and HMI interface. The screw pump as centrifuge feeding pump flow rate can be adjusted by changing the motor speed.
We also produce complete drilling waste management system with our standard compact design, for cold area, we can install the system inside the container.

Recently 2 sets of oil based drilling cuttings treatment system are ready for shipment to Russia. Same with previous order, the vertical cuttings dryer and decanter centrifuges are installed in the container with insulation layer to keep the equipments warm in cold weather in China.
The technical configuration is as below:

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1) Vertical cuttings dryer for oil based drilling cuttings treatment, the oil on the discharged cuttings is below 5%, the client can disposal the solids directly or send to TDU unit according to the environmental protection regulations in their country. The treated fluids will flow to the intermediate tank, the feeding pump of decanter centrifuge will feed the fluids to decanter centrifuge to separate the fine solids. The vertical cutting dryer is installed on the frame inside the container.


2) The waste decanter centrifuge will separate the solids cut point 2~5 microns from the fluids, the discharged fluids can be reused by drilling and prepare for new fluids.
3) Positive Displacement pump is as the feeding pump of decanter centrifuge and installed in the container.
4) The 40ft standard container with windows, doors and top open hole for easy replacement of the screen basket which is wear parts of the vertical cuttings dryer. The insulation layer attached with container is to keep the equipments working well in cold weather in Winter, it is special design for Russia clients.


Why use GN vertical cuttings dryer system?
As per the feedback from our client who has used GN drilling waste managements system, the vertical cuttings dryer system can reduce the drilling waste volume effectively, and the recovered drilling fluids can be reused, the client can save cost and time to transfer the drilling cuttings to third party facility for treatment. And more and more countries forbid to dig waste pit at rig site for environmental protection.

2 sets of vertical cuttings dryer system are shipped to domestic client. GNCM-40B standard drilling waste management system configuration is as below:


1) Vertical cuttings dryer GNCD930E: this is the ideal equipment to treat the oil based drilling waste or Synthetic based drilling cuttings, the oil on the separation cuttings is below 5%, which can meet the disposal limit for most countries, if the client need it to be lower, TDU can be applied.


2) Decanter centrifuge GNLW363C-VFD: This is the best sold model decanter centrifuges among all the series. The decanter centrifuge max speed is up to 3900rpm, the normal speed is 3200rpm to treat the low gravity solids. The max G force is up to 3062G, the typical G force is 2062G, the cut point is 2 ~5 microns. Except for GNLW363C-VFD decanter centrifuge with 14 inch bowl diameter, we can also produce GNLW364EP-VFD to treat the waste water when the water clarity is required strictly. If the client need bigger treating capacity, we will suggest 18 inch, 22 inch, 30 inch centrifuge bowl.
3) Submersible slurry pump GN50YZ20-18A as feeding pump of decanter centrifuge, this is not the best option pump to feed the fluids to the decanter centrifuge, but it is vertically installed, it can save space on the mud tank compared with screw pump, also the maintenance cost is cheaper compared with screw pump. The screw pump works steadily to feed the decanter centrifuge, the flow rate can be adjusted by VFD control panel by changing the frequency.
4) 2 units of Mud agitator installed on the mud tank to mix the drilling fluids
5) Mud tank skid, the decanter centrifuge are installed on it, the vertical cuttings dryer is installed on the frame. The complete skid for convenient transportation.
For more information, pls contact GN solids sales.

GN solids control just come back from CIPPE 2019 oil exhibition in Beijing, China. We showed our advanced technology and equipments at the CIPPE oil show. Below is the photos taken in our stand.


1) Sludge Vacuum pump: it is the ideal pump to transfer the waste cuttings, waste sludge, oil sludge, drilling mud, cement, powder material and other industrial waste.
2) High G force drying shaker with 4 panel composite material shaker screens. The screen dimension 585x1165mm, we can install the shaker screen with API mesh size from API 20 to API 325 comply with API RP13C. The G force is up to 8.0G.
3) 14 inch bowl decanter centrifuge
4) 22 inch bowl decanter centrifuge for waste water treatment and waste sludge treatment and dewatering unit, the bowl diameter is 550mm, the bowl length is 2310mm, different with the normal drilling fluids treatment centrifuge, the GNLW554 series centrifuge can treat the discharged water much cleaner, it is ideal centrifuge for the project required very clear water.
5) Oil sludge separation system : The configuration is as below:
The Premixing tank, coarse solids separation shale shaker, decanter centrifuge, three phase centrifuge, chemical dosing unit, fluids buffer tank, shaker fluids collection tank, oil tank, water tank and complete skid. The mud agitator and heating lines installed on the premixing tank.
6) Vertical cuttings dryer for oil based drilling cuttings treatment.
7) Screw conveyor to transfer drilling cuttings to vertical cuttings dryer drilling waste management system
We got a lot of inquiries and positive interests for the oil sludge treatment unit. The working video for the oil sludge treatment is as below: By using proper chemicals, we can design the customized system for different requirement. If you need to know more information, pls get the brochure from our sales engineer.
http://www.gnsolidscontrol.com/video/oil-sludge-treatment-test-unit-working-video