Mud Solids Control Equipment

Pill tank is a section in the mud suction tank which is used for heavy mud mixing and conditioning ( slug tank).

150bbl Pill Tank specs:

• Active Capacity 150 BBL—Single 150 BBL Compartment
• Dimensions: Length 26’ 6” x Width 7’ 9” x 10’ Height Weight: 22,000 lbs
• Construction: Three runner oilfield standard design
• Top Rail Height: 36” swing down for transport
• Internal ladder rungs with removable walkway for tank access
• Mix/Transfer pump: 8x 6x 14 w/ 75 hp
• Power Requirements: 460V/60HZ or 380V/50HZ, 3phase
• Two Tank Agitators: 15 hp with shaft stabilizer
• Shear pump: 60HP
• Mixing Hopper: Flow Process Technologies 6” High capacity
• Mud Guns: Two 2” mud guns

GN solids control can produce all of the above and provide complete solution, not limit to trip tank, mud suction tank, recycling tank, mud agitator, mud gun, centrifugal pump, shale shaker, mud cleaner, decanter centrifuge, etc complete solids control system.

Continue reading “Pill tank for mud circulation system”

Mud cleaner is a combination of shale shaker, desander, desilter for oilfield drilling mud system, NOV Brandt also called it mud conditioner. There are many suppliers for mud cleaners, Derrick, MI-SWACO, Brandt, GN Solids Control, here we will make a comparison of the 4 model of mud cleaners. Take 1000gpm unit for example:

1 Derrick Mud Cleaner Features:

A round desilter manifold and/or a desander manifold is mounted in a cone discharge collection pan installed over the vibrating screen.Underflow from the hydrocyclones is received by the collection pan, which may feed directly to discharge or onto the vibrating screens for additional processing.

Derrick’s standard desander cone and desilter cone is 10” & 4”

2 MI-SWACO Mud Cleaner features:

Low profile through

Bypass intergral

Vertical installation method of desilter cone

MI-SWACO’s standard desander cone and desilter cone is 12” and 4”

3 Brandt Mud Cleaner

Patented pin-and-hole screen securing system

Brandt’s standard desander cone and desilter cone is 10” or 12” and 4”

4 GN Mud Cleaner

Small footprint, compact design; desilter cone is installed vertical but inclined, GN standard desander cone and desilter cone is also 10 inch and 4 inch, which is same with Derrick’s.

GN mud cleane is convenient to ship it by containers, GNZJ703-2S12N(1000gpm) footprint is only 2403x1883x2195mm, but same treating capacity, Brandt Cobra 16/2 Mud Conditioner dimension is 2692 mm x 2032 mm x 2565 mm. For same treating capacity and function equivalent, GN mud cleaner is with the smallest size.

MI-SWACO CD-250 centrifuge is designed for the purpose to solve a problem that there is no proper model centrifuge for small drilling process application with a compact dimension, for example, HDD, diamond core drilling for mining. It should meet 3 important points: 1 high separation efficiency, 2 tight space, 3 economic solution. GNLW220 centrifuge is designed for the similar purpose.

Comparison of MI-SWACO CD-250 centrifuge & GNLW220 centrifuge

Model	CD-250	GNLW220
Brand	MI-SWACO	GN Solids Control
Length	2333mm	2020mm
Width	730mm	980mm
height	1174mm	755mm
Bowl diameter	253mm	220mm
Bowl length	941mm	930mm
Rotary speed	0~4500rpm 4000rpm operation speed	0~4800rpm 4000rpm operation speed
G-force	2773G @4500rpm	2835G@4800
Weight	1010 KGS	1000KGS
Separation capacity	93gpm@ 9lb/gal mud	75gpm @4000rpm
Solids discharge rate	19gpm max	15gpm
PLC control	For option	For option

Both of them are very compact footprint units, and designed with easy maintenance in the field and continues operation in harsh environment. Compared with CD-250 centrifuge, GNLW220 is more competitive in price and delivery time, they are function equivalent.

Continue reading “MI-SWACO CD-250 centrifuge V.S. GN centrifuge”

GN designed centrifuge mud tank for oilfield and dredging project, with 1 unit of GNLW553VFD decanter centrifuge(or other model available) and Nemo pump to feed the centrifuge, the centrifuge tank is divided into 2 compartment, the mud after treated by shale shaker, desander/desilter flow or be pumped to compartment 1, then Nemo pumppumped it from the compartment 1 to the centrifuge for processing, the clean drilling mud dropped into compartment 2, which can be pumped to other application or flow to anywhere required.

In oilfield application, sometimes mud hopper unit also installed on centrifuge mud tank, the mud which will be feed to centrifuge is with solids smaller than 20 microns, it has been separated by desilter cone. After treated by decanter centrifuge, the max solids remained in the drilling fluids is smaller than 5 microns, it is called “clean mud”. The clean mud may be weighted in pill tank/compartment and mixed by mud mixing hopper & mixing pump.

In Dredging project, centrifuge mud tank is applied after dredging slurry separation system, after treated by the desander ( or sometimes desilter), the solids remained in the slurry may be too fine to be separated out by the centrifuge, so you need a flocculation tank before centrifuge mud tank. After flocculation, the mud is concentrate so It is easy for centrifuge to separate it, this is for better performance. So you have to use a positive displacement pump to pump the flocculated mud to centrifuge, otherwise the centrifugal pump will break it off. Sometimes filter press will replace the centrifuge, but efficiency of filter press is not so dissatisfied, so people use large treating capacity centrifuge instead.

Continue reading “Centrifuge mud tank”

Screw conveyors, sometimes called augers or auger conveyor, are used as an efficient way to move a wide variety of materials. The auger is used to move material along a path using a helical screw. The process of drilling with a helical bit involves aspects of both: the creation of the hole with the tip of the bit is drilling, while moving the waste material out of the hole along the helical path is augering. Not all drilling involves augering (oil field drilling uses a pump to move the material). Screw conveyors in oilfield are often used horizontally or at a slight incline as an efficient way to move drilling fluids with drill cuttings.

Main components of Auger screw:

Motor, control panel, Screw( including blade and shaft),Conveyor housing, Supporting feet and saddles, Feed and discharge spouts, Cover, Through end, etc.

Screw consists of a several of blades of helix shape welded to a pipe or shaft. It moves the material. The following specs should be calculated carefully for proper use: Flight outside diameter, type of blades, spacing between the blades, thickness of the external diameter and interior shaft and rotation direction.

Continue reading “Auger screw for oilfield”

Simply speaking, mud cleaner is desander, desilter, shale shaker 3 in 1, sometimes people called it 3 in 1. For a four phase cleaning solids control system, mud cleaner can do the job for 2^nd and 3^rdphase cleaning of drilling fluids.

GN mud cleaner features:

1 standard design with various treating capacity, 500gpm, 1000gpm, 1500gpm

2 large shaker screen area to dry the solids and recycle more fluids

3 compact footprint, container shipping suitable

4 Easy maintenance, stainless steel valve on each hydrocyclone can make the replacement of cone easier, you do not need to stop whole machine.

MI-SWACO mud cleaner features:

Designed to handle the entire circulating volume to remove and dry solids while retaining premium base fluid. They are equally effective for both weighted and unweighted drilling-fluids.The hydrocyclones make the primary separation with underflow directed onto the shaker vibrating screen.

GN mud cleaner VS MI-SWACO mud cleaner

Model	GN ZJ703-2S12N	SWACO 2-12/6T4 combo	GN ZJ853-3S16N	SWACO 2-12/8T4 combo
Treating capacity	1000GPM	1000GPM	1500GPM	1200GPM
Desilter cone	4” x 12ea	4” x 12ea	4” x 16ea	4” x 16ea
Desander cone	10”x2ea	12”x2ea	10”x3ea	12”x2ea

 

Continue reading “GN mud cleaner VS MI-SWACO mud cleaner”

What is Barite used for？

Barite is commonly used to add weight to drilling fluid. Barite is of significance to petrophysicists because excess barite can require a correction factor in some well log measurements.

Barite Recycling centrifuge

GNLW452S centrifuge is an ideal choice for barite recycling centrifuge, it has been used in oilfield in Russia and middle east for barite recycling. Its max rotary speed is 2200rpm and max separation factor is 1220.

Barite recycling centrifuge is also called low speed centrifuge. Its separating factor is 500~700. To low-density solids, its separating point is 5~10μm. To high-density solids, its separating point is 4~7μm.

Barite recycling unit

High speed centrifuge’s separating factor is 1200~2100 or so, separating point is 2~5μm, it is usually connected with low speed centrifuge to make up a dual centrifuge system. In the system, barite recycling centrifuge is installed in the first phase, barite separated from it is discharged into mud tank to be recovered, liquid is drained into a surge drum first, and then be sent by a pump to high speed centrifuge; the solid separated from high speed centrifuge will be discharged out of the tank and the liquid is back to recirculation system. GNLW363VFD centrifuge can be also used for barite recycling, you can control the speed to 1500~1800rpm by variable frequency drive control panel, when you need to separate more fine solids, you can adjust the speed to 3200~3500rpm.

Continue reading “Barite recycling centrifuge for sale”

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.

Specification of GN Bottom Type Mud Guns

Model	GNNJQ50-3	GNNJQ80-3
Diameter	2＂（φ50）	3”(φ80)
Valve ID&pressure	50mm/3.2MPa	80mm/3.2MPa
Interface size	2＂	3＂
Work Pressure	≤1.6MPa	≤1.6MPa
Nozzle number	3	3
Rotation angle	120°	120°
Remarks	Rotation availaible

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 mining sector in Chile is one of the pillars of Chilean economy and copper exports alone stands for more than one third of government income. Mining Minerals exploration by diamond core drilling will need decanter centrifuge. Usually the decanter centrifuge for mining is different with oil & gas drilling. The latter one will be with small handling rate and high G force, it needs to separate fine microns. The decanter centrifuge used for oil drilling fluids usually with larger treating capacity( 40~60m3/h, like MI-Swaco 414, 518 series or GNLW363 &GNLW364G decanter centrifuge).

Features of decanter centrifuge for mining diamond core drilling:

1 Small handling rate:

GNLW220X660 centrifuge with treating capacity 150L/MIN, centrifuge bowl 9”, bowl length 26”.

2 Small foot print

Diamond core drilling mud system should be portable system with small foot print and easy to move from one site to another, so the centrifuge applied should be also small foot print. GNLW220X660 centrifuge dimension is 865×1080×755mm and weighted 750kgs. It is an ideal model for mining drilling mud system.

3 High rotary speed, high G-force( separation sector)

GNLW220X660 centrifuge with rotary speed max to 4000rpm, the operation speed is 3500rpm. The separation factor in 3500rpm can reach 1500G, it can separate fine particles to meet diamond drilling requirement.

Other advantages of GNLW220X660 centrifuge:

4 large extruder L/D=3, high speed, small speed differential gear, large torque

Continue reading “Decanter centrifuge for mining in Chile”

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

 

 

 

 

 

 

 

 

 

 

More about GNLW553 big bowl big volume centrifuge specifications.

Model (Fixed Speed)	GNLW453G(Fixed)	GNLW450x1780N	GNLW550x1800N
Model(VFD Speed)	GNLW453VFD	GNLW450x1780VFD	GNLW550x1800VFD
Bowl Diameter	450mm	450mm	550mm
Bowl Length	1580mm	1780mm	1800mm
Max Capacity	300GPM(45m³/h)	350GPM(80m³/h)	400GPM (90m³/h)
Bowl Speed(Fixed)	3500RPM (Max)	3500RPM(max)	3200 RPM (Max)
Bowl Speed (VFD)	0-3500RPM	0~3500RPM	0~32000 RPM
G-Force	3000(Max)	3000(Max)	3000(Max)
Separation Point	2 Microns	2 Microns	2 Microns
Main Drive	37 Kw	45 Kw	55 Kw
Back Drive	11 Kw	15 Kw	15 Kw
Remarks	For fixed speed centrifuge,GN have other speed available for your optionby using different pulley,please specify your required speed.

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.