Month: February 2018

GN GNLW series of mud centrifuges, also known as horizontal spiral discharge sedimentation centrifuge, mud centrifuge, is aiming at the characteristics of drilling mud, mud slurry recovery system designed for solid-liquid separation dedicated solid control equipment for oil and gas drilling mud , Sludge dewatering, particle size grading, food protein, starch, kaolin, natural gas desulfurization sludge, waste oil purification and other industries. The removal of fine solids, the reduction of solid content in the solid-liquid mixture, the control of drilling mud density, viscosity, ensuring drilling fluid performance and rapid drilling are all important.

Drilling mud centrifuge

Clogging a reason: centrifuge work process, due to the pump flow is too large, or suddenly increased suction density of the mud, causing the auxiliary motor trip, resulting in centrifuge blockage.

 

Blockage two reasons: Centrifuge shutdown, did not follow the rules carefully, there is no flushing, or flushing is not clean, resulting in centrifuge blockage.

 

If you start the auxiliary motor, if the differential, the drum followed by auxiliary motor rotation, and faster and faster, indicating that the material between the drum and the auger rinse is not complete or even blocked, can’t start the main motor, in this way Centrifuge to overcome blockage; material should be cleaned between drum and auger.

 

The specific method is: remove the shield, stuck with a pipe clamp Auxiliary motor coupling, to both positive and negative force, not to be brute force to prevent the differential ruined. Can also be injected into the slurry into the pipe, for 12 hours soaking, to help turn the motor coupling.

 

Open the collection box to clean up:

 

Per three days, the collection box should be opened for inspection and cleaning. The wear-resistant sleeve, scraper and end scraper on the slag outlet of the mainframe are both fragile and should be used with special care.

More question about decanter centrifuge or other solids control equipment,please contact us

GN solids control Skid-mounted waste treatment system is based on customer needs, in accordance with customer requirements for the treatment of mud after the design, manufacture for the recycling of waste sludge skid handling system. The main core equipment of this system is GNZS594E-HB high-frequency vibrating screen for coarse particle screening and GNLW363C-VFD high-speed decanter centrifuge (with 20-foot flocculation dosing system to improve the processing effect of centrifuge) and system Feed screw pump, skid mounted tank, mixer and so on. According to the specific requirements of customers on the discharge, you can adjust the dosage of different flocculation agents to ensure that the expected delivery of the material to achieve the desired effect.

System components and parameters:

The system has two warehouses: one is a pre-mixed screening warehouse, one is a centrifuge liquid collection warehouse; the whole system can be processed by a centrifuge to remove most of the solid particles above 2μm.
Premix screening silos equipped with a stirrer and heating lines to ensure adequate mixing feed and improve the degree of demulsification mixing agent.
System design mud capacity: 30 m3 / h, to adapt to the environment: -15 ° ~ 50 °
Adapt to mud viscosity: ≤ 45 S.
Adapt to climatic conditions: rain, snow, foggy weather.
Continuous operation at rated power.
Working height range: Normal working at altitude ≤2500 m, working efficiency at ≥2500 m above sea level.
All the equipment of the system is a mature technology and new product, and the technical performance meets the relevant requirements of SY / T5612-2007 Design Specification for Solid Phase Control Equipment for Oil Drilling Fluids.
Machine design is reasonable, compact structure, flexible combination, advanced technology, easy operation and maintenance, performance, safety and reliability.
System is easy to dispatch, transfer and transport, to meet the domestic and foreign road transport regulations.

More question about this system,please contact GN solids control

Solidification unit is a kind of equipment used for final treatment of drilling cuttings.some time it was called stabilization unit,With the strict environmental protection regulations issued, most rig site has to consider further treat of the drilling cuttings to reduce the waste discharge and recover drilling fluids as much as possible. To make work environment friendly,The further treated drilling cuttings, due to containing of chemicals, cannot be discharged directly.

 

Normally,the solidifify will need Cement and lime,some special sludge will add chemical like PAM/blinding material/resin,to keep better solid work,and control harmful metal of drill cutting

Based on different sludge’s solidify time with chemical,GN add VFD adjustable motor for sludge/lime/absorber feeding conveyor ,for easier control solidification unit working progress

Treated material will become solid with in10~15 minutes after discharged from unit,the time can be control follow different sludge and chemical

 

Most important point for using solidification is clean it before push stop,the solids part will stick at internal surface of mixing tank,it will damage the screw and effect further running

 

Some area moisture degree is too high,we advice make sure lime tank dry enough when running,or it may meet stick things too and effect feeding

 

GN choose high quality motor for conveyor for longer system service life,for better arrange waste manage plan

More question,please feel free to contact GN solids control

GN design decanter centrifuge for oil&gas drilling fluid solids control,also can use for water well drilling mud recycling,and we have success experience for HDD drilling,some mining slurry and river water recycling have need of centrifuge

When centrifuge working,the bowl speed will be very high,max speed will be around 3000RPM,if the centrifuge not at stable plant,the whole machine will shake,and tube and motor will be damaged by this speed,and keep balance for screw and main bowl,is very important

GN have protect design to keep centrifuge avoid complete damage for some time,but most time ,bowl speed too high,damage will still happen,even the centrifuge stop,prepare is always better

The electric current will raise when centrifuge not stable,the motor will request more power to keep bowl speed,if centrifuge working at this state for long time,the life of motor and control system will reduce a lot,and power waste will raise,we have met this before,and advice make check list,and do maintenance to save money for future fix cost

Before fluid feeding to centrifuge,we advice try keep the size of solids average enough,this also can help centrifuge running stable,and make better separation work

The user can build plant to fix centrifuge,this is good way to keep centrifuge work stable,and keep solids control work well

 

Hope every user get good separation by GN centrifuge,more info,please contact GN solids control