GN Solids Control makes various sizes screw conveyor augers for oil and gas drilling field. The auger diameter has 10inch, 12inch, 14inch, and 18inch for optional. GN Solids Control offers augers with transfer length 12ft, 24ft, 36ft and 48ft, which is combined by standard 12ft per section.

The transfer length of GN auger screw conveyors can also be customized per jobsite request for carrying cuttings from solids control equipment in drilling mud solids control system eliminating water-jetting, like collect drill cuttings from shale shaker, desander, desilter, mud cleaner, decanter centrifuge. And then transfer to drill mud and drill cuttings waste pits.

GN Solids Control screw conveyor is also widely used in drilling waste management system, it can be used to feed cuttings to drilling waste management equipmente, like high G drying shaker, vertical cuttings dryer. And it can also be used to collect drill cuttings from high G drying shaker, vertical cuttings dryer, and high speed decanter centrifuge, and then discharge the cuttings skips (as well as waste containers).

The top covers of GN Solids Control screw conveyor can be made from metal plate, or gratings. Normally, it not specified by clients, GN Solids Control will offer metal plate type top covers. Some time, clients will prefer half metal plate and half grating covers. GN Solids Control can also offer. Clients do only need to appoint it before order. The top Covers on the top of GN Solids Control screw conveyor can be equipped with hinges on one side, and provided with locks or bolts on the other side. It is for easy open and close.

For safety, GN Solids Control offers full length Grab wire / pull cord switch connected to cable / wire rope looping on top of the auger covers. It is for automatic power trip when the top cover is opened up from closed position, or when automatic power trip while the top covers are not closed in right position.

GN Solids Control finished a package of oil base mud and cuttings treatment unit for an overseas client. The major separation equipped in the drilling waste management system is vertical cuttings dryer and high speed decanter centrifuge.

The vertical cuttings dryer model is GNCD930. GN Solids Control drilling waste Vertical Cutting Dryer applies centrifugal force to separate and recover oil based mud and cuttings, as well as synthetic base mud and cuttings.

The stainless steel screen basket with rotor assembly traps “wet” solids and accelerates them up 900RPM with G force to 420G. Usable drilling mud or oil slurry will be forced through the screen basket openings, and the oversize solids phase are extracted by the angled flights attached to the cone, which rotate slightly slower than the bowl. Tungsten carbide protects the scrapers from abrasive solids and ensures long operational life.

There is a gap with certain distance between the screen basket and rotor assembly, keep the accurate gap between them are essential for proper separation.

The decanter centrifuge model used in the drilling cuttings treatment system is 14inch, the model is GNLW363. It is the most popular size centrifuge model used in oil and gas drilling field. There are 2 decanter centrifuges used in the drilling waste management system. One centrifuge is used for drilling mud solids control, another decanter centrifuge is used after vertical cuttings dryer to further clean the recovered liquid phase. The 14inch decanter centrifuge design speed is 3900 rpm, and the typical bowl speed can up to 3600RPM. As the too fast speed request more frequency check and maintenance on the centrifuge. And if over 3200rpm, the high G force may damage the mud composite. But mostly when delivery from GN Solids Control factory, the max. Typical bowl speed is set up to 3200rpm.

The drilling cuttings treatment system is customized per client’s request. The vertical cuttings dryer and decanter centrifuges with accessory device are all allocated in a fabricated container for keeping temperature and for easy movement.

GN Solids Control makes full package oily sludge separation system for various types of oily sludge and oily waste. It can be used to treat oil sludge includes but not limited to oil sludge from Crude Oil tank cleaning sludge, oil sludge from Refinery plant waste oil sludge, and oil sludge from oil and gas drilling waste oil pit.

The most popular size Oil Sludge Treatment System made by GN Solids Control is GNOST-05 and GNOST-15. The related handling capacity is 5 m3/h and 15 m3/h. The handling capacity is specified by the decanter centrifuge and 3-phase tricanter centrifuge inside the separation system.

The principle of GN Solids Control Oil Sludge Treatment System is to use chemical to wash the oil sludge and with heating system to keep the temperature of internal materials 60 C degree to 70 C degree. The chemicals has maximum activities and can reach the best performance under the temperature 60 to 70 C degree.

After washing the oily slurry can be pumped to GN separation equipment to separate into oil, water and solids phase. The major separation equipment in GN oily separation system is shale shaker, decanter centrifuge and tricanter centrifuge. The shale shaker used in the oily sludge separation is a customized double deck shale shaker. There are jet nozzles around the the shaker deck for heating the oil sludge to keep it at a suitable temperate. On top of the double deck shale shaker, there are stainless steel anti-splash covers for protection the operators during system running.

The recovered water can be reused in the washing process inside the oil sludge separation system. After tricanter centrifuge separation, the BS&W inside recovered oil is with 2-3% (BS&W=Base Sediment & Waterin oil), it is clean enough for selling to the refinery companies. The discharged solids contain less than 2% oil which can be sent to biodegradation or thermal unit for final disposal if needed.

Clients need to note that, emulsified oil can only be treated after demulsification. If the oil sludge cannot be demulsified with demulsifier, the system cannot handle it.