Decanter centrifuges are used in industrial applications for the continuous separation of solids from liquids where the volume of solids is relatively high.The decanter centrifugal force by solid phase particles of liquid ring and the ratio of its own gravity called decanter centrifuge separation factors, the larger decanter centrifuge separation factor can separat finer particles from the mud.
The centrifuge comprises a rotating assembly driven by a large electric motor mounted in a secure foundation frame, bolted to the ground through vibration dampers. The rotating assembly itself has two main components: the outer bowl and a screw conveyor. When the centrifuge is run up to operating speed the main drive motor turns the outer bowl at typically 3,000 r.p.m. A secondary motor is connected to the screw conveyor , the scroll, via cyclo-gearbox. The produces a differential speed between the outer bowl and the scroll of between 10 and 20 r.p.m. and has the effect of providing a conveying action inside the rotating assembly.
KOSUN DC series drilling decanter centrifuge is used in separating suspension of solids phase with particle diameter(d≥2μm) for drilling mud and fluids handling. Ruggedly built for oilfield and industrial services, it is especially effective in environmentally sensitive areas. The decanting centrifuge delivers high fluid-recovery rates and efficient solids control to significantly reduce the costs of makeup fluids and disposal. The drilling centrifuge must test the dynamic balance for smooth operation over long periods.Speed ranging from 0 to 3900 RPM, generating centrifugal forces reach up to 3000G.
To meet the requirements of the development of modern drilling engineering, KOSUN developed and equipped with the explosion-proof variable frequency control system which could adjust separation factor and drum rotational speed. By this new technology, make the drilling centrifuge adapt property changing of mud during the operation process, which makes the treatment more effective and perfect.
Proper management of wastes begins with pollution prevention. Pollution prevention refers to the elimination, change or reduction of operating practices which result in discharges to land, air or water. This principle should be incorporated into the design and management of E&P facilities and the planning of associated activities. If elimination of a waste is not possible, then minimizing the amount of waste generated should be investigated.
Responsible drilling waste management may be accomplished through hierarchical application of the practices of source reduction, reuse, recycling, recovery, treatment and responsible disposal. Elements of these practices are shown below:
Source Reduction—the generation of less waste through more efficient practices such as: material elimination inventory control and management material substitution process modification improved house keeping.
Reuse—the use of materials or products that are reusable in their original form such as chemical containers oil wastes for road construction and stabilization burning waste oil for energy.
Recycling/Recovery—The conversion of wastes into usable materials and/or extraction of energy or materials from waste. Examples include: recycling scrap metal recycling drilling mud using cleaned drill cuttings for road construction material recovering oil from tank bottoms and produced water.
Treatment—the destruction, detoxification and/or neutralization of residues through processes such as: biological methods—composting, tank based degradation thermal methods—incineration, thermal desorption chemical methods—neutralization, stabilization physical methods—filtration, centrifugation 4 WASTE MANAGEMENT GUIDELINES Drilling Waste Management Hierarchy.
Responsible Disposal—depositing wastes on land or in water using methods appropriate for a given situation. Disposal methods include: land filling burial surface discharge land spreading or land farming underground injection.
The potential ecological sensitivity of the location of operations is key to the selection of an appropriate management practice for a specific waste. This may require information on geology, hydrology, climate and biological communities. Environmental Impact Assessment documents can be a useful resource.
Hi-G dryer is popular used for water based mud drilling cuttings treatment. After Hi-G dryer, high speed centrifuge will be followed for further treating. After treated by centrifuge, solids parts can be used for construction; liquid part can be further treatment by flocculent unit. Hi-G dryer is also can be used for oil based mud drilling cuttings treatment; vice versa, vertical cuttings dryer can also be used for water based mud drilling cuttings treatment. Based on this, KOSUN design it’s vertical centrifuge which can be used for both WBM and OBM drilling cuttings treatment.
Drying shaker can also be used to recover oil-based, water-based and synthetic-based waste from drilling cuttings. Different number of Hi-G dryers can be equipped based on the conditions at drilling sites.LS584-D Hi-G shaker independently developed and manufactured by KOSUN features in high G-force (adjustable), and superior screening and drying effect. The screen frame tilt angle can be adjusted from -1° to +5° via AWD angle adjustment system while drilling. The liquid content in cuttings after treatment can drop to below 10%, significantly reducing drilling waste discharge cost.
KOSUN is a big drilling Hi-g shale shaker manufacturer, we can supply all the equipment about drilling waste management,just like vertical centrifuge, decanter centrifuge, screw conveyor and Hi-g dryer. If you want to know about more other equipment, you can enter the url:www.kosungroup.com or www.kosun.us