Drilling Mud Recycling System

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 shale shakers are shipped to South America, together with 500 pcs shaker screens and other wear parts for stock. This is repeat order from the same client, they purchased 2 units of high speed decanter centrifuges before.

The shale shaker model is GNZS703F-SHBF, with shaker screen size is 700x1250mm, the total screen area is 2.63m2. The max G force is 7.5G and it is adjustable for different applications. The shaker deck angle is adjustable from -1º to +5º by manual adjustment. Both of the 2 sides can be adjusted synchronously. 2 ea Italy Oli vibration motors 1.72kw drived the shale shaker and the starter is explosion proof for oil drilling rig.
The composite material frame shaker screens is proved to work 20% longer time than previous steel frame shaker screens, in some rig site, the working life is up to 700 hours with drilling fluids. It can be also used for oil sludge treatment to separate the coarse solids from the oil sludge, different mesh shaker screens can be installed on the shale shaker by different applications. For all the mesh over API 60 use 3 layers stainless steel wire mesh for steady performance.
The decanter centrifuge model is GNLW363CG with max speed 3900rpm, The normal speed is 3200rpm for low gravity solids removal, the client can replace 2700 rpm speed pulley for high gravity solids separation or 2200rpm speed pulley or 1800 rpm pulley for barite recovery. The centrifuge bowl material is duplex stainless steel 2205, the other components are made of SS316L for better corrosion resistant, the collection box is made of SS304 material. The screw impeller is protected by tungsten carbide tiles which is repairable once it is damaged.
If you need shale shaker and decanter centrifuge, pls contact with GN solids control.

Recently 4 sets of solids control equipments are ready for shipment to our client, this is the repeat order from the client, they will produce 4 sets of mud tank system locally to produce sea freight cost and import tax. The configuration is as below:

1) 4 sets of shale shaker with 3 panel shaker screens, each shale shaker with 2 no vibration motors. Each shaker installed with API 170 shaker screens
2) 4 sets of 7.5KW mud agitators
3) 36 pcs of composite material frame shaker screens, dimension is 700 x 1250mm
4) 4 sets of mixing venturi hopper with stainless steel material
5) 4 sets of mud gun
6) 2 sets of centrifugal pump as mixing pump

These 4 sets of mud tank system are used for workover rig drilling mud recycling. Each mud tank with 1 unit shale shaker, 1 unit mud agitator, 1 unit mud gun, 1 unit of venture mixing hopper, 1 unit of centrifugal pump as mixing pump to drive the mixing unit. The client produce the mud tank, tank accessories, pipelines, walkways, handrails, stairs, valves, etc.

Compared with oil drilling rig solids control system, the workover rig mud tank system normally with less equipment and do not have strict requirement for the solids removal from the drilling fluids. The common rig solids control system including 2 or 3 units of shale shaker, 1 unit of mud cleaner with 2 unit of centrifugal pumps, 1 unit vacuum degasser, 1 unit of decanter centrifuge for barite recovery, 1 unit of decanter centrifuge for low gravity solids removal. Several units of mud agitator, mud guns for agitating the drilling mud, several units of mixing hopper with mixing pump, several units of charging pump to feed the drilling fluids to mud pump.
For more information, pls contact with GN solids control.

Recently one batch of solids vacuum pump are shipped to Africa. As the most professional solids vacuum pump manufacturer in China, GN solids control can produce 3 models vacuum pump with different treating capacity for different applications. We have 3 models vacuum pump for option: GNSP-40B with max flow rate 40m3/h, GNSP-20B with max flow rate 20m3/h, GNSP-10B with flow rate 10m3/h.

The vacuum pump is 100% air operated pump to transfer different materials, including:
1) Waste mud/ cuttings discharged from shale shaker, mud cleaner, decanter centrifuge
2) Drilling fluids
3) Oil sludge, oil tank bottom waste sludge
4) Dredging slurry/ mining tailings/ industrial waste mud
5) Barge holdings and vessel bottom cleaning
6) Sand, solids, fine silt, coarse solids
7) Hazardous waste/ oil contaminated earth
8) Animal waste

The GNSP-10B, GNSP-20B vacuum pump are all made as portable design for convenient movement, the actual flow rate will vary based on different materials transfer, for example, the flow rate to transfer oil sludge with high viscosity and to transfer normal sludge is very different. The user need to prepare air compressor for air supply and provide enough pressure. Also the client need to prepare proper length suction and discharge pipe to connect with the solids vacuum pump. The solids vacuum pump is the ideal equipment to transfer the solids with the most compact size without electricity power supply required.
GNSP-40B vacuum pump can be put on the trailer/ truck for convenient transportation.

Air supply demand:
For GNSP-40B, 17m3/min( 600CFM)
For GNSP-20B, 8m3/min( 280CFM)
For GNSP-10B, 4.3m3/min(150CFM)

Pressure required:
For GNSP-40B, 80 ~114 PSI
For GNSP-20B, 80 ~100 PSI
For GNSP-10B, 80 ~100 PSI

Max suction distance and discharge distance:
For GNSP-40B, 50m / 1000m
For GNSP-20B, 50m / 500m
For GNSP-10B, 50m / 500m

If you required the solids vacuum pump, pls contact with GN solids engineer.

Recently one set of offshore mud tank system is ready for shipment, Because of the limit space for offshore platform, the design of the mud tank system is compact and easy transportation, the technical configuration is as below:

1) One unit of linear motion shale shaker to separate the coarse solids, the shaker screens are composite material frame with stainless steel 316L wire mesh for longer working life, so that the user do not need to waste much time on replace the shaker screens. The screen lock method is by wedges with ratchet wrench for convenient locking the screens.

2) One unit of mud cleaner( desander cone, desilter cone and underflow shale shaker combination) with 2 centrifugal pump as feeding pump, the centrifugal pump is interchangeable with famous brand centrifugal pump, the hydrocyclones are 100% PU material for longer working life, if the mud temperature is higher than 80 degree, we will use metal cover outside the PU cone to prevent is from deformation.
3) One unit of decanter centrifuge with submersible slurry pump as feeding pump
4) Compact design mud tank with all the electric cables outside the mud tank for convenience replacement and check. The discharged solids/ cuttings are collected by a slant box and drop down to the screw conveyor to transfer the cuttings to the drilling waste management system.The user do not have to clean the floor and do not need extra skip to collect the waste cuttings. The handrail, walkway and stairs are installed with the mud tank.
5) The mixing hopper, mixing pump are installed on the mud mixing tank if the client need to prepare for new drilling fluids with the recovery drilling fluids.
If you need customized design mud tank system for offshore and onshore drilling, pls contact with GN solids control.