Generally speaking, decanter centrifuge plays a role in separating solids from liquids. Alfa Laval decanter centrifuge is one of the best sold centrifuges in the world, especially in South America. The other brands in South America market including Derrick, MI-Swaco, NOV, Derrick, GN, etc. GN solids control is new brand player in the market, but fast developing.
A decanter centrifuge separates solids from one or two liquid phases in one single continuous process. This is done using centrifugal forces that can be well beyond 3000 times greater than gravity.
When subject to such forces, the denser solid particles are pressed outwards against the rotating bowl wall, while the less dense liquid phase forms a concentric inner layer. Different dam plates are used to vary the depth of the liquid – the so-called pond – as required.
The sediment formed by the solid particles is continuously removed by the screw conveyor, which rotates at a different speed than the bowl. As a result, the solids are gradually “ploughed” out of the pond and up the conical “beach”.
The centrifugal force compacts the solids and expels the surplus liquid. The dried solids then discharge from the bowl. The clarified liquid phase or phases overflow the dam plates situated at the opposite end of the bowl. Baffles within the centrifuge casing direct the separated phases into the correct flow path and prevent any risk of cross-contamination. The speed of the screw conveyor may be automatically adjusted by use of the variable frequency drive (VFD) in order to adjust to variation in the solids load.
GN decanter centrifuge mainly used for drilling fluids processing, barite recovery, drilling waste treatment, mud weighted, etc projects. We also produce related equipments fitted for the centrifuge, to be assembly as a complete drilling mud processing system, including mud tank, mud agitator, mud mixer, shale shaker, etc.
The device protects the Compensating gear from torque overload, which is installed in the outside end of the Compensating gear. The torque of gear is limited with a spring clutch by which power can be imputed. While overload cuts off spring clutch with driving shaft, the face of spring move the gland down to outside for 6mm and the stroke faucet switch on to switch off the power of main motor and fluid supply pump.
Electric interlock device (only dual motor driving system)
In the dual motor driving system without inverter speed-adjustable device, the correct program for starting a centrifuge is:
1) Firstly start the auxiliary motor.
2) After thirty second, the main motor allows to be started.
The correct program for stopping a centrifuge is as follow:
1) Firstly stop the main motor.
2) After ten minutes, the electric interlock device will automatically switch the power of the auxiliary motor.
With the electric interlock device, the correct program can be automatically carried out and unexpected result from wrong operation can be avoided.
Welcome to contact GN solids control if you are interested to apply for our distributors in Venezuela. GN solids control is a young but fast developing company and we are solids control specialist in China. We have exported many sets of drilling mud cleaning and recycling system to South American regions, for example, Brazil, Colombia, Venezuela, Argentina, Ecuador, etc.
solids control system in Venezuela
Perhaps the most important thing to know about Venezuela is that it is an oil exporting country, the fifth largest in the world, with the largest reserves of conventional oil (light and heavy crude) in the western hemisphere and the largest reserves of non-conventional oil (extra-heavy crude) in the world.
GN manufacture complete line solids control equipments for the drilling rig( shale shaker, desander, desilter, mud cleaner, vacuum degasser, decanting centrifuge, mud pump, poor boy degasser, mud gun, mud agitator, mud mixer,mud tank), and we can provide a complete solution on drilling waste management( high G dryer, decanter centrifuge, screw pump, vertical cutting dryer, mud tank, etc). As government policy is more and more strict on environment related on drilling, our equipments are more and more important recently.
All of the foregoing sets the stage for showing just how extremely important the country’s conflict over oil is. At the most overt level, the conflict between the Chávez government and the oil industry is one about who controls PDVSA. Beyond that, the specific issues that control is being fought over have to do with the company’s efficiency, its internationalization program, its outsourcing and subcontracting practices, OPEC membership, and special oil contracts.
PDVSA has a production capacity, including the strategic associations and operating agreements, of 4 million barrels per day (600,000 m³). Officials say production is around 3.3 million barrels per day (520,000 m3/d) although most secondary sources such as OPEC and the EIA put Venezuela’s output at least 500,000 barrels per day (79,000 m3/d) lower.
GN solids control exported several sets of drilling mud system to Amazon region, including Ecuador. We can produce the complete drilling mud separation system, including shale shaker, vacuum degasser, desander, desilter, decanter centrifuge, vertical cutting dryer, mud tank, etc.
Ecuador produces more oil than it needs for domestic consumption and thus it is one of the country’s leading exports. Therefore, any new drilling for oil is not intended to meet local demand but is intended for export overseas, most likely to Japan and the United States.
drilling mud separation system
Drilling mud is used to control subsurface pressures, lubricate the drill bit, stabilize the well bore, and carry the cuttings to the surface, among other functions. Mud is pumped from the surface through the hollow drill string, exits through nozzles in the drill bit, and returns to the surface through the annular space between the drill string and the walls of the hole.
As the drill bit grinds rocks into drill cuttings, these cuttings become entrained in the mud flow and are carried to the surface. In order to return the mud to the recirculating mud system and to make the solids easier to handle, the solids must be separated from the mud. The first step in separating the cuttings from the mud involves circulating the mixture of mud and cuttings over shale shakers.
The liquid mud passes through the screens and is recirculated back to the mud tanks from which mud is withdrawn for pumping downhole.
GN provides air-operated double-diaphragm pumpsand accessories. Now we have inquiry for Air compressor driving the diaphragm pump. Welcome air compressor manufacturer to contact us for cooperation.
An Air Diaphram pump is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable non-return check valves to pump a fluid. Sometimes this type of pump is also called a membrane pump.
Air Diaphram pump features:
have good suction lift characteristics, some are low pressure pumps with low flow rates; others are capable of higher flows rates, dependent on the effective working diameter of the diaphragm and its stroke length. They can handle sludges and slurries with a relatively high amount of grit and solid content.
Now we have already Exclusive agent in Turkey, we produce mud tanks there and ship the solids control equipments from GN factory, and assembly them in Turkey. It will save considerable transportation cost of mud tank and fast the delivery time a lot. The clients in Turkey and Turkey neighborhood, such as Iran, Syria, Dubai, Egypt, Iraq, etc. countries, will benefit from this convenience.
1500m drilling rigs are used to explore middle deep oil and coal-bed methane. They have characteristics of simple structure and easy operation. There are four types of this rig: ZJ15,ZJ15DJ ,ZJ15DZ,ZJ15DB.
The1500m drilling rig has a parallelogram substructure and a telescoping mast. The mast is raised by cylinders and expanded or contracted with wireline, 1 500kW AC frequency converting motor is used to drive the drum shaft of the drawworks through the counter shaft and the roller chain. The drawworks has two gear shifts—high speed and low speed. The gear shifting is made by using the push-disc type clutch. The main brake is the hydraulic disc brake. The rotary table is connected to the drawworks with the chain and driven by the drawworks. The closed chain compound case uses the fully forced splash lubrication. The auxiliary brake is FDWS-15 air-cooling electromagnetic eddy current brake.
Petson is a local company in Turkey who can provides the complete solution for drilling rig package, including drilling rig (mobile rig), mud pump, solids control system, well control equipments, generators, etc. They have a big yard and capability to assembly the complete drilling rig package and ship to drilling site, especially in middle east. They have rich experience in oilfield drilling industry and during these years, they get good reputation and always keep good relationship with many drilling service companies.
GN 2-WAY Flow Divider is designed to maximize the solids removal capabilities of shale shaker. It is mainly used for GNZS703 tandem shale shaker, GNZS852 triple shale shaker.
Function of flow divider for LMSS
flow divider
Ensures even distribution of liquid and solids to downstream shakers
Solids removal efficiencies are dramatically increased by the Flow divider, which distributes fluids/solids equally to multiple downstream shale shakers. Positive sealing weir gates are removable, allowing flow per selected shaker or installed omitting flow. The Flow divider eliminates the need for back tanks and shaker bypasses and minimizes the effect of pitch and heave. The unit is available in four sizes: 2,3, 4, 5, and 6 way.
Mud from the flow line enters the rear of the Flow divider (1) where it contacts a baffle (2) allowing the flow to pass under and sometimes over before it flows over the weirs (3), and divides the liquid and solids equally between the desired number of shaker feed ports (4). Positive-sealing weir gates permit flow to the downstream shakers .
This week GN shipped several sets of stainless steel mud agitators to Algeria. Normally our agitator material is carbon steel, but sometimes we can make customized equipments, such as customized shaft length, impeller diameter, impeller thickness, material, etc.
A mud agitatoris used in surface mud systems to suspend solids and maintain homogeneous mixture throughout the system. A mechanical agitator is driven by an explosion-proof motor, coupled to a gear box that drives the impeller shaft. The impellers (turbines) transform mechanical power into fluid circulation or agitation. The objective is to obtain a uniform suspension of all solids.
mud agitator
Mud agitator can be divided into horizontal mounted agitator and vertical mounted agitator according to mounting method.
All Derrick agitators feature a “C” face motor coupled to a rugged oilfield gearbox, which
eliminates misalignment and troublesome couplings. This configuration promotes longer motor and gearbox bearing life. Derrick uses a Helical-Bevel gear unit to turn the impeller.
This highly efficient gearbox offers a 95% power transfer, which is approximately 30% more than a worm drive gearbox. Helical-Bevel gearboxes are preferred over worm gear arrangements because of their power efficiency, reliability, and lower operating temperatures.
GN solids control will attend Brazil Offshore Conference 2011 held in Macaé Brazil. Here we will show shaker screens for world famous brand shale shaker and for GN shale shaker.
replacement shaker screen for Derrick shaker screen
GN can produce the following replacement shaker screens1 Derrick FLC500
Macaéis a city located in the Brazilian state of Rio de Janeiro, 180 km northeast of the state capital. Macaé is generally considered to be the centre of the Brazilian offshore petroleum industry. As a consequence it is often referred to as “Cidade do Petróleo” (“City of Petroleum”). The Brazilian state-controlled oil company – Petrobras – has many facilities within the town.
Conference introduction:
Brasil Offshore is the biennial conference & exhibition for the Brazilian Offshore Oil & Gas Industry. Held in Macaé, which is the operational base and accounts for over 80% of Brazil’s offshore exploration, the event attracted a global audience of over 49,000 professionals and 636 exhibitors in 2009.
replacement shaker screen for Swaco shaker screen
Who attend Brazil Offshore Conference 2011?
The scope of exhibitors at Brasil Offshore stands out for its diversity: manufacturers, importers, distributors and suppliers of a wide range of products and services related to the oil & gas offshore industry.
GN solids control can design and manufacture the complete line of drilling waste management system, including shale shaker, high G dryer, vertical cutting dryer, decanter centrifuge, screw pump, etc equipments.
The first step for drilling waste management is to separate the solids cutting from the liquid drilling mud. Once solid and liquid drilling waste have been separated, companies can use a variety of technologies and practices to manage the wastes. For some applications, drilling wastes are solidified or stabilized prior to their ultimate management practice. The management technologies and practices can be grouped into three major categories: waste minimization, recycle/reuse, and disposal.
drilling waste management centrifuge
Function of waste minimization
It can reduce volume or impacts of waste, including the following two aspects.
