Bottom type mud guns are the drilling mud gun installed close to the bottom of the tank which are meant to provide supplemental or primary mixing in mud tanks depending on the number being used and the pit size. They are best used in tank corners to keep solids from settling and a mud agitator is placed in the tank center.Bottom Type Mud Guns are designed for submerged service in steel pits.

Bottom Type Mud Gun

Specification of GN Bottom Type Mud Guns

GN Solids Control is one of the top  mud gun manufacturers in China,and with sales and services around the world.

Bottom Type Mud guns are to be located in the tank corners. The centerline of the nozzle is to be located about 6” off the tank bottom.

The big bowl big volume decanter centrifuge with high speed is now becoming more and more popular.The popular models of the the big bowl and big volume decanter centrifuge as below:

• GNLW553  with 550mm diamter bowl and 1800mm bowl length.
• Derrick DE-7200 VFD with 544mm big bowl and 1829 bowl length.
• NOV Brandt HS-2172 with 533mm big bowl and 1829 bowl length.
• MI Swaco CD-600 with 598mm big bowl and 1930mm bowl length

Big Decanter Centrifuge

More about GNLW553 big bowl big volume centrifuge specifications.

Derrick DE-7200 VFD  Big Bowl Big Volume Decanter Centrifuge Specifications

The DE-7200 Variable Frequency Drive (VFD) centrifuge offers the high flexibility in system control, permitting it to handle a wide range of feed slurries. Its automatic startup and shutdown routines permit safe, consistent, unattended operation. Automatic load sensing and feed pump control facilitate automated performance optimization. The bowl can be operated at up to 3000 RPM, resulting in centrifugal acceleration of 2750 G’s. To accommodate low levels of agitation and rapid solids removal, the conveyor can operate at differential speeds ranging from 1 to 70 RPM. The DE-7200 drive system consists of two explosion-proof inverter-duty motors. A 150 HP motor drives the bowl, and a 60 HP motor operates the conveyor.

Motors are powered by Pulse Width Modulated (PWM) AC drives having Insulated Gate Bipolar Transistor (IGBT) outputs. Each motor drive and peripherals are controlled by an environmentally hardened PLC, which offers operating flexibility, short-term data storage and display of critical parameters, and remote monitoring and control of the centrifuge from up to thousands of miles away.

Some more info. about Brandt HS-2172 Centrifuge

http://www.nov.com/Brands/Brandt/Centrifuges/HS-2172_Centrifuge.aspx

Some more info about MI Swaco Big Bowl Big Volume Centrifuge.

GN is one of the few company who can design and manufacture the 500 GPM drilling waste liquid and waste cutting treatment system.Because very few companies manufacture the vertical cutting dryer and big bowl big volume decanter centrifuges.

Part I, Drilling Waste Liquid Treatment

The liquid transport trailer with the waste liquids would unload directly over a 3 panel scalping shaker(GNZS853) mounted on top of a 250 bbl tank (#1) with at least 2 mix agitators in the tank and possibly some gun lines to circulate liquid in corners of tank.

Out of tank #1 need a centrifugal pump(50HP) to feed a desander cleaner (GNZJ852-1S)cone at 500 gal/min with 2 panel shaker mounted on top of 150 bbl tank(#2). 2 agitators in tank #2 and possibly some gun lines to circulate liquid in corners of tank.

Out of tank #2 need a centrifugal pump(50HP) to feed desilter cleaner(GNZJ852-8N) cones at 500 gal/min with 2 panel shaker mounted on top of 150 bbl tank(#3). 2 agitators in tank #3.Out of tank #3 need a centrifuge feed pump to feed a VFD controlled centrifuge(GNLW553VFD) mounted on top of 150 bbl tank(#4). 1 agitator in tank #4.Out of tank #4 need a centrifuge feed pump to feed a VFD controlled centrifuge mounted on top of 150 bbl tank(#5). 1 agitator in tank #5.

From tank #5 liquid will be pumped with a centrifuge feed pump thru a polymer injection/emulsion break chemical injection system to various oil/water separator tanks.

Part 2: Drilling Waste Cuttings Treatment.

Drill cuttings off the primary shaker(Solids Control of the Rig) when brought to site, will be sent to the 2 cuttings dryers(GNCD930) mounted up on a stand to allow front end loader to remove solids from under dryer. Cuttings will be fed to dryers 2 feed augers, the liquids from the dryer will be dropped into 100bbl tank (#6) with 1 agitator. Liquids from the 100bbl tank will be recirculated to dryer and pumped (with a separate centrifuge feed pump) to a high speed VFD controlled centrifuge for processing and oil stored in 300bbl tank(#7) below centrifuge.

From tank #7 liquid will be pumped with a centrifuge feed pump thru a polymer injection/emulsion break chemical injection system to various oil/water separator tanks.

From Wiki about Drilling cutting:

Drill cuttings^[1] are the broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods. Boreholes drilled in this way include oil or gas wells, water wells, and holes drilled for geotechnical investigations or mineral exploration.

The drill cuttings are commonly examined to make a record (a well log) of the subsurface materials penetrated at various depths. In the oil industry, this is often called a mud log.

Drill cuttings are produced as the rock is broken by the drill bit advancing through the rock or soil; the cuttings are usually carried to the surface by drilling fluid circulating up from the drill bit. Drill cuttings are separated from the drilling fluid by shale shakers (for liquid drilling fluid), or by cyclone separators (for air drilling). In cable-tool drilling, the drill cuttings are periodically bailed out of the bottom of the hole. In auger drilling, cuttings are carried to the surface on the auger flights.

In the other days, a customer asked us about slime dewatering system. Their main purpose is to take out of the drain pits, means do not need very clean water. Then they tell us the distribution of the solids contents.

After know more about our equipments such as GNZS83-2 shale shaker, GNZJ83-2 mud cleaner, SB4x3x11 centrifugal pump and so on. They have got some questions, and I want to share then if you have the same questions, take this for your reference.

By the way, after export to more than 30 countries over the world, and we are more professional at solids liquids separation now. Here is the questions:

1) is it possible to produce the dewatering system with productivity less then 50m3/h?
Yes. Actually if you want drier solids, a little less is better.

2) how you’d suggest to unload filtered material to the carts from the system?
the filtered material can be loaded to the cars directly, pls kindly find the picture in the introduction document.

3) how do you load the system with watered slime? Continue reading →

Slurry handling system is also solid liquid separation system, while it usually refered in agriculture, dredger and other small projects.

Scraper are usually used for separation works, not always the shale shaker. And the working priciple is also a little different.

Shale shaker is widely used in slurry handling system.

Linear motion shale shaker

Agitators are also used for mix up the slurry and keep the slurry active.

Continue reading →

Slurry recycling is also very important in tunneling boring, piling, and so on. Equipments used in slurry treatment plant to keep the charactor of the slurry for recycling use.

These are a few sketchs for the TBM (tunneling boring machine) system. And as we can find, shker, desilter hydrocyclones are used in the slurry recycling, i.e. slurry treatment plant.

Continue reading →

Decanter centrifuge is used widely in solids liquid separation, in Oilfield Industrial decanter centrifuge manufacturer, we recommend GN Solids Control, and as we know, decanter centrifuge is really popular in oil/gas drilling, sometimes HDD, Industrial and biological wastewater treatment, and so on.

Oilfield drilling mud decanter centrifuge supplier:

GN Solids Control based in China manufacture and supply complete line of high-speed, variable-speed and fully variable-speed decanting centrifuge for handling drilling fluids.

High speed decanter centrifuge

M-I SWACO manufactures and markets a complete line of high-speed, variable-speed and fully variable-speed decanting centrifuges for handling drilling fluids.

Centrifuges are used to process unweighted and weighted, water-based and oil-based drilling fluids (muds). The NOV® Brandt® HS-2172 series

Other Supplier:

Alfa Laval’s products and solutions are used in areas of vital importance for humanity such as food and water supply, energy production and economizing and environmental protection.

American Filtration & Separations Society AFS is the premier organization in North America dedicated to R&D, problem solutions and technology transfer in filtration and separation for the benefit of industrial processes, individual health and a clean environment. Continue reading →

Once a client asked some questions about drilling fluid systems, and I think it is very representative, so I just post here, for all your reference.

*How is the fluid transferred between compartments?

If you still confused by this, contact with our sales, maybe you need a more detailed drawing, or more contact.

*Is the coupling between the tanks rigid or flexible, what is the diameter?

Definitely yes

*Are the shakers, desilters, etc.. designed to be removed quickly for transport?  Are they fitted to one large skid or individual units?

It depends sometimes, shakers, desilters are conected with the mount with screws. So if you need, it is easy.

*Can the mounting of the shakers, desilters etc.. be reversed if we require to place the tanks on the opposite side of the machine?

If you need, contact with our engineer firstly.

*For cleaning purposes, how are the tanks accessed, are the walkways removable?

Yes, the walkways is removable.

*I would prefer the hopper at ground level as all the fluids can be next to the hopper and it is easier to dispose the bags into a skip. Also in adverse weather conditions, it is easier to mix additives beneath a canopy away from the wind and rain which is something I’d like fitted.

Thank you very much for your information, and we can design the jet mud mixer as you required.

*Can you please provide a quote and specification for a degasser?

That is cool, we not only supply four phase soldis control equipments, and we also supply vacuum degasser, poor boy degasser, centrifugal pump, and shaker screens.

*What is the weight of the tanks with the components removed for transport?

You can find it in the quotation.

*The volume of each compartment?

It is different from systems one another.

Drilling fluid equipment contains solids control equipments, mud moniter equipment, mud pump, jet mud mixing euipments and so on. GN Solids Control is a professional company at solids control equipments, (sometimes, drilling fluid equipment is equil to solids control equipments, as countries and persons are different), and got the API certificated in Nov, 2010.

GN solids control is customer concentrited, so usually, if the customer want drilling fluid equipments, firstly they asked GN about solids control equipments, then to find the other products like mud pump, in a economic and effective way, they got the recommendation of GN to find the outstanding companies as GN.

As we all know, drilling fluid is very important in the drilling works, no matter water based or oil based or others. While GN Solids Control only produce equipments for mud rotary drilling.

Solids Control Equipments Continue reading →

GN-MRS500 mud recycling system is a modulized system for HDD, and it is very popular all over the world.

This GN-MRS500 system contains:
1 GNZS 83-3 shale shaker;
1 GNZJ 83-3 mud cleaner;
2 SB5x4-14 centrifugal pump;
1 JBQ7.5 mud agitator;
1 SLH150-35 jet mud mixer; Continue reading →