Drilling mud Equipment

In oilfield drilling, there is a lot for different sludge including drilling waste, water, oil, and cuttings. This makes it to be a tought job to managing the liquid and solids separation. Especially getting enough drying solids from the mixture of drilling waste from mud sytem and tank cleaning waste.Now from GN lastest oifield application cases we have Vertical Cuttings Dryer for the tough job.

Video:GN 2nd Generation OBM Cuttings Vertical Dryer Factory Testing

For getting oil on cuttings to below 3%, waste management company normally use the Thermal deporption unit (TDU)

Thermal desorption is an ex-situ treatment technology that utilizes heat to increase the volatility of contaminants such that they can be removed from a solid matrix: typically, soil, sludge, filter cake, or drill cuttings. Desorbers are designed as a separation technology to remove organic compounds from such matrices without thermally destroying them. The volatilized contaminants are then either collected or thermally destroyed in secondary treatment units. A thermal desorption system therefore has two major components; the desorber itself and the off-gas treatment system.

Usage for TDU in Drilling Sludge

Thermal desorption is a thermal soil remediation technique that has been utilized at several hundred environmental remediation projects world wide. As a mature technology, thermal soil remediation performance can be predicted with a high degree of confidence.

Besides ultilizing GN Vertical cuttings dryer, the high speed decanter centrifuge is very important for the LGS separation.

Video:GN Vertical Cuttings Dryer for water based mud drilling waste Management

GN factory produced mud cleaners all over the country in all oil and gas fields. Overall, this Decanter Centrifuge with large-displacement, high pressure, less wearing parts, easy maintenance, low weight and small size, a series of advantages, is adapted to the needs of modern Jet drilling technology a good device. In the last few years, GN technicians of the company for the use of this type of mud cleaner has done some research work. Also found some problems, worth designing and manufacturing units and user attention.

Mud cleaners, widely used in the construction of water projects, sending smoke fiber-containing mud, stones and other impurities. Ordinary mud cleaners, high energy consumption, low efficiency, overcurrent short service life and maintenance disassemble frequently. Therefore, preparation of high effective Grout Cleaner is imperative. According to the features of mud cleaner, combined with NL100-118 design of centrifugal mud pump and explore its hydraulic design method, key parts of the manufacturing process, sealing joints, such as selection of material. Design parameters are: flow rate: 160 m3/h; Head: 18m; Efficiency: 68%; Speed: 146 or/MSN; Number of leaves: 3; Impeller blade streamline imports a distorted involute shape.

LWF450x1000N Mud cleaner is really a center spead centrifuge along with sixty-M3 treating capability as well as 5-7 microns splitting up. This particular shale shaker is extremely popular depending on it’s broad programs as well as discounted. However for many ALL OF US customers they’ll select a higher pace design or even variable spead centrifuge. All of us simply obtained four models associated with higher pace centrifuge final 30 days as well as additional solids manage tools.

Besides Mud cleaner, GN additionally produce shale shaker, dirt solution, desander & desilter, centrifugal pump motor, dirt agitators, dirt container, aircraft dirt machine, and so on. GN additionally produce the entire type of solids manage program in addition to little dirt program with regard to HDD CBM as well as gemstone drilling. Visit here (http://www.gnsolidsamerica.com/company-profile.html)

Drilling mud types

There mainly 3 types of drilling mud for drilling rig system: Oil based mud (OBM), water based mud (WBM) and Synthetic based mud. According to different drilling rig and different depth, suitable drilling mud type will be used.

WBM (water based mud) is the most common drilling mud type. Most widely be used worldwide and its relative lower cost and lower pollution.

OBM (Oil based mud) is mainly used for very deep drilling and the difficult depth drilling rigs. OBM cost higher and have a big pollution to environment.

SBM (Synthetic mud) is used as the alternative of OBM. SBM drilling waste is relative easy to be treated. It has a lower pollution. At offshore rigs, the SBM drilling waste can be discharged directly to the sea. But it is not stable under high temperature. It is more difficult to get but the total cost lower then OBM and WBM.

Cuttings dryer machine for OBM and WBM

Cuttings dryer used for Oil based mud (OBM) and Waste based mud (WBM) is different. Normally, high G dryer shaker is used for water based mud (WBM), vertical cuttings dryer is used for oil based mud (OBM) and Synthetic based mud (SBM). But a higher standard vertical cuttings dryer can treat all the 3 types of drilling mud cuttings: OBM, WBM and SBM. It request a high standard of manufacturer. Few company can make it.

Top brand manufacturer for drilling mud cuttings management

1) CSI

2) GN Solids Control

Vortex mud hopper is an important part of drilling mud mixing system. It is used to mix new qualified mud for drilling rigs. The drilling mud vortex hopper usually used together with a centrifugal mixing pump or shear pump to realize the function.

GN Mixing Hopper Technical Parameters

Applications of drilling mud vortex hopper

Normally, vortex mud hopper used together with centrifugal mixing pump, 1 vortex mud hopper + 1 mixing pump, or 2 vortex mud hopper + 2 mixing pump, it is called jet mud mixer. If it widely used in oil and gas drilling, HDD, CBM, micro tunneling, piling, water well drilling, etc…

While the vortex mud hopper combined with shearing hopper, it is a shearing mixing. It is used while there is fibrin in the injected chemicals. Shearing pump will cut the fibrin before enter into hopper for mixing.

Jet Mud Mixing System

China manufacturer GN Solids Control offer the world with drilling mud jet mud mixing.We are an exporter of drilling fluid jet mud mixer for Indian, Russian,middle east.etc.We manufacture and design drilling bentonite mud mixer,drilling mud tank jet mixer.We supplied to Oilfield Company of the Turkey Venezuela, Indonesia, Russia, the United Arab Emirates,Turkey,and Morocco and Century Int’l Oilfield Equipments LLC of the United Arab Emirates etc.choose us as supplier.Our factory and company are Quality Management System ISO 9001-2000 certified.

Decanter centrifuge is a high efficient equipment used for solids control and drilling waste mangement. Many customer, they are wondering how to choose the suitable decanter centrifuge model for their applications. Some customer thought, the big speed, the higher. It is not correct. Some customer believe Variable Frequency Drive (VFD) high speed centrifuge can cover all the speed and G force, it is the best choice. Actually, it is not correct for all conditions.

Below some Question and Answers between customers and the decanter centrifuge manufacturer. It may help you for some understanding.
Q 1. We prefer GNLW363 VFD high speed decanter centrifuge, the highest international standard. The speed adjust from 0~3200rpm, but in case of no VFD we need it to work only with 1400rpm.

Answer from GN: GNLW363 centrifuge is mainly for high speed. We only recommend If you are mainly running at lower speed, we recommend GLW452. It is a 18inch decanter centrifuge, with bigger capacity, better price. GNLW452 is a middle speed centrifuge, normally 1800rpm, GN can mach VFD panel for 0~1400rpm per customers request.
For heavy mud, 452 centrifuges is the best choice to used with solids control equipment to reduce the weight. It is widely used for barite recovery (high gravity separation).
Q2: How can we get fixed speed control for VFD centrifuge?
Answer from GN: Normal, the only VFD control for VFD centrifuge, if customer need both VFD and fixed speed control, you can choose an extra Hydraulic Coupling & Fixed speed control panel. The Fixed speed control panel can be separatedly, or design together with the VFD panel, whichever you like.
Q3: How do services and change of parts happen during guaranty period and who is responsible for doing it after commissioning?
Answer from GN: GN company will send engineer for first time commissioning and training if request by customer. Customer can also send engineer to GN China base for training. For normal parts changing and some small questions after first time commissioning, GN will offer long-distance instruction. If your engineer cannot solve with long-distance instruction, GN can send engineer to jobsite for support.
Q4: We want a centrifuge mostly running around 3200 and 1400rpm, which decanter centrifuge model suitable?
Answer from GN: GNLW363 fixed speed is suitable. We can offer you 2 sets pulley with belt for 2 fix speed. You only need to change pulley and belt to get another speed.
Q5: Do we need to stop the centrifuge while changing pulley and belt for another fixed speed?
Answer from GN: Yes, indeed. You have to stop the centrifuge decanter and when it is stable, you remove the pulley and belt on the machine and change for another set.
Q6: How and there we can buy GN equipment and what about spare parts and after sales services?
Answer from GN: GN Solids Control, as an international group for solids control, waste management and replacement shaker screen manufacturing, we have R&D and manufacturing headquarter in Beijing China. We have warehouse and office in Houston, and you can also source support from GN other distributor in Argentina, Chile, Brazil, Australia, Iran, Korea

Low pressure / high pressure mud gun is used for mud tanks usually together with mud agitator. It is used as an assistant of mud agitator.

Drilling mud agitator usually mounted in the middle of the tank compartment to agitating mud and prevent it from settle down. But at corners of mud tank, agitator impeller cannot effect. In this case mud gun used.

Drilling fluids mud gun is mounted at the corner of tank. It has high pressure and low pressure for option. Some for international customer, sometime we will prefer 5000psi high pressure mud gun. It request a high standard of the seamless steel pipe feeding for the mud gun.

China supplier usually offer 1.6Mpa, 3.2Mpa and 6.4Mpa low pressure and high pressure mud gun. Parameters as below:

GN Mud Gun Technical Parameters

Applications of mud gun

Drilling fluids mud gun can be powered by centrifuge pump, mostly mixing pump, it is called low pressure mud gun. Dud gun in rig system can also be powered by mud gun with high pressure. Mostly, only high pressure or low pressure will be used in one system, but in some mud system, customer will prefer both high pressure and lower pressure.

Sizing and model selection of mud gun

The number of mud gun depends on the size of tank. Usually mud gun installed with mud line of mud tank. According the inlet pipe size, there are 2’ mud gun and 3’ mud gun for option. According to different structure feature, there are two types of mud gun: fixed mud gun , and rotary mud gun.

The mud gun in the mud system can also be used for transfer mud from compartment to compartment, like for trip tank compartment.GN Mud Guns are available for rotation adjustment to allow the operator to optimize the mud guns performance. The replaceable wear resistant jet nozzle is used, which is special design with better shearing.

MI Swaco decanter centrifuge mostly used in oil gas drilling mud solids control and drilling waste management services. GN Solids Control have the Branch in Houston, USA offers the similar drilling mud decanter centrifuge for the oil gas industry.

About MI Swaco Drilling Mud Decanter Centrifuge

M-I SWACO is a Schlumberger oilfield drilling mud service company, one of the largest oilfield service company in the world. provides high-speed, variable-speed, and fully variable-speed drilling mud decanter centrifuges designed specifically to process drilling fluids to the highest environmental standards. MI Swaco decanting centrifuges are designed to deliver high fluid recovery rates and efficient solids control. Together, that adds up to a significant reduction in the operator’s total fluids cost and less waste for disposal.

Swaco Decanter Centrifuge for Solids Control

MI Swaco Decanter centrifuges recover as much as 95 percent of the barite in weighted drilling fluids. The barite is returned to the active mud system, while the decanting centrifuge discards the finer, lower-gravity solids.
For drilling waste management of the  chemically enhanced dewatering systems, M-I SWACO decanting centrifuges reduce liquid discharge volumes significant while enhancing total solids control system efficiency.

GN Solids Control & MI Swaco Centrifuge Models:

• MI Swaco Decanter Centrifuge VS GN Solids Centrifuge
• MI Swaco 414  Small Decanter Centrifuge mainly for drilling fluids barite recovery which is similar to GNLW452 Decanter Cengtrifuge

• MI Swaco 518 Premier high-speed decanting centrifuge is similar to GNLW363 Series High Speed decanter centrifuge for low gravity solids separation and drilling waste management dewatering.

• MI Swaco CD-500 Centrifuge is similar size to GNLW453 decanter centrifuge for different applications in the oilfield drilling solids control and drilling waste management.

• MI Swaco CD-600 Centrifuge is a big bowl big volume centrifuge like GNLW553 big bowl centrifuge which is popular in the oil industry.

GN Solids America is located in houston Texas offers drilling mud decanter centrifuge for oil industry.

Functions of drilling fluids mud desilter

Drilling fluids mud desilter is the 3nd stage solids control equipment. It is usually used after desander. For mud cleaner used for oil and gas drilling field, 4 inch deciliter cone is the most frequency be used. It can remove solid particle around 30~70 microns.

Working principle of drilling fluids mud desilter

Main part of drilling fluids mud desilter is the hydrocyclone cone (desitler cone). It is a kind of pressure device. The separation process is carried out by employing centrifugal forces. Under pressure, drilling fluid with solid particles will flow into the mud desilter cones, after high rotation, bigger and heavier particle will be threw to cone wall, then slide down till drop in apex and separated out. Clean fluids will be moved out from cone top port. So, there will be 2 rotary gas flow in the drilling fluids mud desilter cone, one is liquid contains quantity big solid flow down as cyclone, the other is smaller solid mixed with gas go up as bow wave.

The angle of the fluid entry has been specifically designed to facilitate the flow and separation. The Cones are made of high durameter polyurethane with optional steel inserts, which ensure consistent productivity.
Desilter Cones remove fine sand and silt down to 30 microns.
Desilter Cones are available of 4″ size that have a 2″ inlet and a 2″ outlet.

Available models of drilling fluids mud cleaner

From design, there are mainly 2 types of mud desilter: with under flow shale shaker or without under flow shale shaker. For different capacity, the desilter cone can be used from 4 each to 24 each. Users can choose suitable models per his jobsite detailed condition.

Vertical cuttings dryer is an important equipment for drilling waste management, especially for oil based mud drilling cuttings and synthetic based mud.

Usually, the oil on cuttings (OOC) of waste drilling cuttings will be around 20~25%. After treatment of Vertical cuttings dryer, it can be reduced to 3% ~5%. In most countries, it can be discharged directly with this dryness. After the Vertical cuttings dryer, there usually a decanter centrifuge followed to further treat the recovered drilling fluids. GN Solids Control company can offer complete solution on oil and waste based mud drilling cuttings treatment.

GN Vertical Cutting Dryer uses centrifugal force to dry drilled solids in oil or synthetic base fluids. A stainless steel screen bowl traps “wet” solids and accelerates them up to 890RPM with G force up to 420. Liquid is forced through the screen bowl openings, while “dry” solids are extracted by the angled flights attached to the cone, which rotate slightly slower than the bowl. Tungsten carbide protects the flights from abrasive solids and ensures long operational life. This aids in maintaining a constant gap between the scroll and screen bowl, which is crucial for Vertical Cutting Dryer proper operation. GN Vertical cutting dryer has been done strict balance testing for all major rotary components to minimize vibration & noisy.The Cutting Dryer is the ideal products for oil based drilling waste management.

In some case, some customer use High G dryer shaker as an alternative of GN Vertical Cutting Dryer. It can save big cost on machine. But high G shaker can only reduce OOC (oil on cuttings) to 5% ~ 10%. Users can choose the suitable machine per your jobsite condition and per the budget.

1A) As below Display one the PLC controlled Decanter Centrifuge touch screen, we can see 1 start & 1 stop button for centrifuge, 1 start and stop button for pump.

PLC Decanter Centrifuge Auto Model Operation.

1B) The VFD+PLC Centrifuge have two Mode, one is Auto Mode, if we choose Auto Model, first we set the Centrifuge Bowl speed, and Differential Speed, then press Decanter Centrifuge Start Button , The PLC will control to start the back motor first, and main motor, later we press the pump start Button, the pump will run until to the max capacity the centrifuge can handle.

1C) As set in the PLC, we can only start the Decanter Centrifuge start button to run the back drive motor first, second the main motor, finally the pump motor. If we do not follow the order of the starting, to protect the centrifuge, the pump motor will not start even we press the pump start first.

1D) Once the centrifuge is in overload, the PLC will stop the pump, and later stop the main motor, finally, stop the back drive motor.( This is present program in the PLC)

But for 1D) we can updated the PLC decanter centrifuge to following.

 1D Updated) Once is in overload, the PLC will slow down the pump to lower down the pump capacity to the centrifuge max capacity, if the centrifuge is still in overload, the PLC will stop the pump, and later stop the main motor and finally the back drive motor.

1E) When we stop the centrifuge, the stop order is: first the pump, later the main motor, finally the back drive motor, if we do not follow the order, the PLC will control not to stop the centrifuge.

Manual Mode Operation of the PLC Decanter Centrifuge

2A) If we run the centrifuge in Manual model, first we set the bowl speed, and set differential speed, and set the pump capacity. When we start, we can only follow the order to press the bowl start and the pump start, if not, no motor will start.

2B) In the manual mode, if we stop the centrifuge, it is the same like 1E). the stop order is: first the pump, later the main motor, finally the back drive motor, if we do not follow the order, the PLC will control not to stop the centrifuge.

2C) In the manual mode, if the centrifuge is in overload, the PLC will stop the pump, and later stop the main motor, finally, stop the back drive motor.( This is present program in the PLC)

But for 2C) we can updated to following.

 2C Updated) Once is in overload, the PLC will slow down the pump to lower down the pump capacity to the centrifuge max capacity ,if the centrifuge is still in overload, the PLC will stop the pump, and later stop the main motor and finally the back drive motor.

Moreover, For option, we can choose to install the temperature sensor for the bearings, and vibration sensor for the PLC Decanter Centrifuge. If the bearing increasing temperature is higher than 50C° the centrifuge will stop automatically. And if the vibration is higher than the standard, the PLC Decanter centrifuge will stop automatically. But this will be higher cost.

GN can offer customized smart control operation per user’s special requrest. For more information, contact GN group as below:

GN China: http://www.gnsolidscontrol.com

GN U.S.A:http://www.gnsolidsamerica.com