Month: May 2015

The fixed speed control panel is single speed control panel with starter / stop functions. Relatively speaking, this panel is easy to produce with lower cost, and the operation procedure is also very simple. For customers who only need single speed centrifuge like 3200rpm or 2700rpm or 2200rpm, may go to this single speed centrifuge with single speed control panel. However, if the experienced customer wants to achieve better performance, they may go to variable speed centrifuge with variable speed control panel. With this panel, the speed can be adjusted flexible from low speed to middle speed to high speed. Another, differential speed can also be adjusted for better performance.

GN Solids Control variable speed control panel with 3 units ABB frequency transducer, can adjust the speed in a very convenient way. The dimension of the control panel is about 1.5m X 0.8m X 1.7m.

 

For all other equipment with motor drive, all can be design into variable speed with ABB frequency transducer. Like variable speed screw conveyor, variable speed feeding screw pump, variable speed vertical cuttings dryer etc.

 

Variable speed screw conveyor with ABB transducer panel is widely used in drilling rigsite. The customer can adjust the drilling waste / drilling cuttings transportation speed in a good way.

Variable speed feeding pump for centrifuge with separate single ABB transducer panel is also very popular. In this case, the customer can easily change the feeding rate without effect from centrifuge.

Variable speed vertical cuttings dryer is really good idea because of the large motor will produce very high prompt current when starting. With this variable speed control panel, the big motor 75kw can be started smoothly and stably.

 

GN Solids Control have a professional electrician team who can design, research and produce electrical control panel for any motor drive equipment. If you need some help, pls contact us freely. Email: sales@gnsolidscontrol.com or visit GN website: http://www.gnsolidscontrol.com/

 

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The drilling fluid filtering systemis function like human heart that provides zero-discharge oh drilling fluid.  Such system is a big ticket items and there are some facts need to consider before make purchase.

1) Type of drill you will be using
2) The drill rate
3) The type of solids
4) The length of your bore
5) The GPM (gallon per minute) of the pump
6) The mud tank volume that will need
7) The number of Hydrocyclones
8) The screen size and API number

These factors determine your usefor drilling fluid filtering system that is adequate enough to clean the mud and protect the components and the drill bit of the rig, pumps and mud cleaners.

Gallons per Minute: When deciding the size of a drilling fluid filtering system that you will need, it is best to double the amount your GPM Need.   For example: If you are pumping 250 gals, you would want consider with a 500-gpm unit.

Trailer or Skid mount: Depending on your requirements, drilling fluid filtering systems can be either trailer mounted or skid mounted. Trailer-mounted units require dedicated trailer (built to unit). Skid-mounted unit can be removed from trailer which releases the trailer for other jobs requirements.

Screen surface: larger screen surface area you have means more volume of drilling fluid that can be process and clean.

Screen selection: The mesh size (API #) of screens is measured by the number of opening per square inch on the screen. Various mesh sizes control the size of the debris that can be removing. The same mesh size will not work in every drilling condition. Sizes will vary depending on the size of the debris and the type of formations you are cleaning.

Shakers: There are three different kinds of shakers (orbital, elliptical and linear). Orbital is a circular motion and elliptical isn’t perfectly circular — it’s an ellipse or oval. Linear has vibration that is induced by a pair of eccentric (or eccentrically weighted) shafts turning in opposite directions. This type of arrangement allows for the development of straight line or linear motion that can also be produced in a positive (uphill) incline.
While each shaker has a specific place that it will stand-out from other choices such as unit selling price, the ability to process heavy clays and rock or fines and ultra-fines, our overall preference of choice is the linear.

Hydrocyclones: Depending on the size of the mud system you choose, the cone size will either be 4 or 10 in. Each size cone has a micron cut point, which is the size of the smallest particle that the cone can pull out. The 4 inch cones have a micron cut of 20 microns and the 10 inch. Have a 74 micron cut.

Decanter Centrifuge: build purpose to filter solids between 2-5 micron and main purpose to recover barite for re-use as additive back into the drilling fluid.  It operates in G centrifugal force that control in fixed or changeable RPM of rotate bowl to achieve separation.

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Shale shaker is the first stage machine to clean drilling fluids out from wells, indispensible both in a solids control system for oil and gas and mud system for other kinds of drilling. Driven by dual motors, GN shale shaker is liner motion with adjustable G force max to 7.5 G. After treated by the shale shaker, the drilling fluids will be further treated by desander, desilter, mud cleaner, decanter centrifuge to keep it clean enough for recycling usage.

Normally, a shale shaker contains below main parts:

The vibrator motors are attached directly to the screen frame and positioned over the screening bed to maximize the G-forces transferred to the screen surfaces. Float mounts isolate the vibratory motion of the screen frame from the support structure. Screens are fixed on the screen bed by wedges ,which is much easier to operate and improve work efficiency. The adjustable while drilling (AWD) mechanism is achieved by one electric motor that allows adjustment of the screen bed angle between -1°and +5°(The two-panel shaker deck angel is fixed at +2° ).This combination of features maximizes the fluid-handling and solids-removal capabilities of the machine.

 

The drilling fluids from mud return line of the drilling rig feed into the buffer box, then over flow to the shaker deck and shaker screen. The shaker motor motivate the fluids flow from one side to the other side of the shaker. While moving ,the fluids will down the screen to the collection box and the cuttings are discharged at the other end of the shaker. What’s more, the desander cones, desilter cones, or both of them can be added into the shale shaker installed on a frame fixed over the shale shaker. According to the quantity of cones, different models of shale shaker will be selected as underflow shaker.

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Centrifugal pumps are also called sand pumps. They are used as a very important devise for transporting drilling mud from one place to another. In oil and gas drilling industry, sand pumps are used for feeding the desanders and desilters, and also used for jet mud mixing system for feeding the hopper drilling mud.

Depends on the requested capacity, the sand pumps are designed in different capacities for different applications. Normally, in a same solids control system, the centrifugal pump for feeding desander and desilter are of same model. Like GN’s model, in the model code, you could find the main specifications of inlet, outlet and impeller.

In the standard layout, the first equipment is shale shaker, and the second is degasser. The degasser is used to delete the gas bubbles in the drilling mud, therefore, it also helps to improve the efficiency of the centrifugal pumps and protect them as well. After the solids control centrifuge, comes the jet mud mixer system. The centrifugal pumps are also used as mixing pumps for mixing hoppers.

A good centrifugal pump with a long service life is decided by several factors: the reasonable design and the good material. GN Solids Control is China leading manufacturer of solids control and waste management systems and equipments, together with GN systems, GNSB series centrifugal pumps were sold to more than 60 countries and regions in the world. And for GNSB centrifugal pumps, they are using stainless steel mechanical seals for a longer service life.

Besides centrifugal pumps, GN also has submersible slurry pump, screw pump, shear pump and etc available. Those pumps are used for feeding the solids control equipments in a system, like the centrifuges, shearing jet mixer, or to transport mud from mud pit in cases of HDD or CBM or Piling. In a word, GN could provide high quality turn-key solution for solids control and waste management systems for the end users.

 

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Among all the solids control and waste management equipment used for oil and gas drilling, the centrifuge is of the most difficult one to produce because of the preciseness and the performance. As the solids control manufacturer who ranks in the first place second to none in China, GN Solids Control is very specialized in the centrifuges, especially the 14 inch bowl decanting centrifuge.

This 14 inch bowl decanting centrifuge is a popular size centrifuge all over the world for applications in oil and gas industry. For this same size, GN provide 4 models, GNLW363CG, and GNLW363CG-VFD premium configurations and, GNLW363CD and GNLW363CG-VFD as economic configurations.

For Premium configurations: the premium configuration of decanter centrifuge GNLW363CG, they use better and stronger material for bowl, as SS2205 stainless steel made by centrifugal force. And the impeller protection tiles are made of special material which is both anti-corrosion and strong, which is called the ceramic in steel while steel in ceramic, a combination of the advantages of ceramic and steel. SKF bearings, for longer service life and better performance…and etc.

 

For both premium and economic configurations, GN has VFD control panel available, enable the rotation speed to be possible from 0 to 3200RPM. GN Solids Control is the first solids control manufacturer who can make the positive pressurized VFD control panel, and this method is the most popular in the world for time being and safer than flame proof solution especially in high temperature conditions.

 

GNLW363CG Premium Configuration is commonly used in Middle East, in the next month, in an Oil Exhibition held in May in Tehran, GN will show one set of newest design decanter centrifuge for Persian Gulf customers. May you have interest, pls feel free to contact us at our website or visit our factory near to Beijing Airport.

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The purpose of vertical cutting dryer is help oil rig to meet and excess the current and upcoming environmental regulation and control the operation cost effectively.  Separate the solids contents in the drilling fluid will maximum the life use of drilling fluid yet the solids remove drilling fluid need to be properly process so it will not contaminate the earth soil by removing moisture as much as possible.  The vertical cutting dryer working concept is similar like garment washer in high speed spinning mode.  The inside of the vertical cutting dryer contain the screens to filter the solids.  Yet in continues high speed spinning usage, the screen often get clogged and need to stop during the process.  To encounter this issue, GN Solids Control’s vertical cutting dryer feather air knife inside the dryer to prevent clogging the screen.

Air knife is a high compress air system blow off liquid and debris wile object that need to be process in continuous moving motion.  The “knife” produce uniform sheet of laminar airflow pressurized air containing a series of holes or continuous slots through which pressurized air exits in a laminar flow pattern.  This impact of air can be from mist breeze to high velocity without making contact with object.

Air knives remove liquids, control the dense of liquids, dry the liquid covering, remove solids particles, cooling the surfaces or create a press force to assist in the mechanical bonding of materials to the surface. Electrical currents from anti-static bars can also be injected into the exit air knife stream to eliminate the static electricity charge on some surfaces.

The most common use of air knives is to contain or remove flowing materials (liquids or solids) from the surface of material. The applications include drying solids to prevent solids stick on the screen.   They can also different temperature air to a surface, or create an invisible air barrier to separate heated or cooled environments.

GN Solids control can provide you high quality vertical cuttings dryer and best after sale service.

GN Solids Control is the first private company who develop vertical cuttings dryer, to compete with USA/ Europe verti-G dryer brand. Like Swaco verti-G dryer, CSI verti-G dryer and NOV brandt Vertical cuttings dryer. After 3 to 5 years, GN Solids Control have upgrade the vertical cuttings dryer to 4th generation dryer with better performance and different model size for different projects requirements.

GNCD930D Vertical cuttings dryer is the GN 4th generation vertical cuttings dryer with 20-30tons/h treating capacity, 900mm in diameter. The different jobsite see below:

 

Video: GN vertical cuttings dryer with GN premium centrifuge in Cyprus.

This customer is from Cyprus who just start the business to treat the oil drilling sludge from offshore platform. The oil drilling sludge is a mixing of crude oil, drilling cuttings / drilling waste from shale shaker, desander desilter etc. The customer use screw conveyor from GN solids control to transfer the oil sludge to vertical cuttings dryer and then go to centrifuge, the working performance really make the customer happy. After they use GN solids control equipment, this customer come to China to check about the factory and office of GN, which close to Beijing International airport. After check GN factory, the customer are considering to buy more centrifuge & vertical cuttings dryer for their own use and resell it in local market.

 

Video: GN drilling waste management system for Shell in Sichuan, China

Shell is very critical about the equipment quality and commissioning time at jobsite. Before Shell use GN vertical cuttings dryer, Shell already tried other brand vertical cuttings dryer, including CSI dryer and also other China brand vertical cuttings dryer, the performance is not that satisfactory. Then, Shell buy one set vertical cuttings dryer and one set centrifuge from GN Solids Control and arrange GN people to do the commissioning. GN engineer only takes one day and one night, the solids control equipment can working well at the jobsite. The working performance, the dryness of cuttings (OOC = oil on cuttings) is below to 2.9%. These results really make Shell happy. Now, we are talking about more business with Shell, and they are trying to buy more centrifuge and vertical cuttings dryer this year.

 

At the beginning of this year, GN develop the 1200rpm high speed dryer with better performance. If you are in need of this equipment, pls contact us freely.

 

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