Month: October 2022

An integrated solids control system might include scalping shakers, linear motion shale shakers, desander , desilter, vacuum degasser, decanter centrifuge, mud agitators, mud gun, mixing hopper, centrifugal pump, which are installed on the mud tank system.

The solids bigger than 100 microns are removed by primary shale shaker, solids bigger than 45 microns are removed by desander, solids bigger than 25 microns are removed by desilter/ mud cleaner, solids bigger than 10 microns are removed by decanter centrifuge. The low gravity solids are separated by high speed decanter centrifuge, the high gravity solids are separated by middle speed decanter centrifuge. The drilling cuttings will be collected by cuttings collection box or screw conveyor, and then transfer the drilling cuttings to drilling waste management system.
Water based drilling cuttings treatment system consists of high G drying shaker and VFD decanter centrifuge with chemical dosing unit, the water can be sent to waste water treatment facility for final disposal or add additive to prepare for new drilling fluids.

Oil based drilling cuttings treatment system including vertical cuttings dryer, VFD decanter centrifuge, the recovered drilling fluids will be pumped back to solids control system for reuse.
The linear motion shale shaker will be installed on the shaker tank with drilling fluids distribution box which will receive the drilling fluids from flowline and flow to each shale shaker evenly for better separation. The shaker screen installed on the shale shaker is composite material frame shaker screen which is produced comply with API RP13C standard. We can produce shaker screens from API 20 to API 325 as per client’s requirement, the mud engineer can control the mud weight to use different API mesh screen.
GN solids control can design and produce the integrated solids control system for their drilling rig, for more information of our equipments, pls contact with us freely.

The solids vacuum pump is mainly used for drilling cuttings transfer, mud tank cleaning, drilling rig platform cleaning, waste pit cleaning, etc. applications by oil service company and drilling companies.

GN solids control have different model vacuum pumps for option based on their requirement. GNSP-40B max capacity is 40m3/h, GNSP-20B max capacity is 20m3/h, GNSP-10B max capacity is 10m3/h. The design capacity of the vacuum pump is nominal capacity, it will varied based on different material, suction and discharge distance and depth. The air supply should be sufficient for vacuum pump reliable operation. The drilling waste can be picked up automatically and transferred to drilling waste management system. Another method to transfer drilling cuttings is screw conveyor, due to place limit and rig site layout, the screw conveyor system may not be used, then solids vacuum pump can be used instead.
The suction process is that the air compressor provide the air into the vacuum generator, which produces negative pressure in the pump body and suck the drilling waste from the suction pipe. The discharge valve is in close condition. According to suction time, the pump will suck material automatically.
The discharge process is that close the valve of vacuum generator, the air flow to the pump body to produce positive pressure inside the pump body. The discharge valve is open, and the drilling waste is pushed out by positive pressure to the expected area.
The features of GN vacuum pump:

1. It can be used for hazardous area application, since it is 100% air operation pump. But air compressor is required for air supply.
2. The suction horizontal distance is up to 50m, the discharge horizontal distance is up to 500 ~ 1000m.
3. The solids size allowed to enter into vacuum pump is up to 50mm or 75mm, the solids content is up to 80%.

As an oil sludge treatment system supplier in China, GN solids control also provide customized oily soil treatment solution. Recently one set of customized Oil Contaminated Soil Washing and Separation system are ready for shipment to our customer. Before feeding to standard oil sludge treatment system, we need to broke the solids into small pieces and mining separation shaker to screen the coarse solids and wash the solids so that the oil sludge became fluidity for easy separation by the oil sludge treatment system.

The crushed solids can be transferred by solids vacuum pump and be diluted in the pre-mixing tank and adding proper chemicals, agitating and mixing, the oil sludge will be transferred to screening module by submersible slurry pump. The solids vacuum pump is 100% air operated pump which needs an air compressor to supply air, it can be operated with automatic mode or manual mode according to their requirement.

There is an separate chemical dosing module to add chemicals in the pre-mixing tank and feed the chemicals to decanter centrifuge and 3 phase disc separator, the automatic chemical preparation and dosing unit is used in the preparation, storage, and dosing of powder chemicals. The single barrel manual dosing system is commonly used for manual injection of chemicals, which has the basic function of continuous and stable dosing. Both of the barrel dosing system and automatic chemical dosing unit are installed inside the container for reliable operation and for sun/rain proof.

The main separation components is the centrifuge separation module, including solids liquid separation decanter centrifuge, 3 phase separation disc separator for oil and water separation. The recovered oil is collected into buffer oil tank, the treated water is stocked into water tank, which can be used in the circulation system. The discharged solids will be collected by waste container for further treatment or final disposal.