Drilling cuttings drying system is the main part of closed-loop system for drilling fluid treatment. It recovers as much drilling fluid as possible by processing drilling cuttings with high humidity. This week, GN Solid Control completed the manufacture of two sets of vertical cuttings drying system. The cuttings drying system will soon be shipped to customers in China domestic market.
Vertical cuttings drying system is mostly used to treat oil base mud and oil base mud drilling cuttings. The whole system is mainly composed of cuttings drying module and fine particle removal module. Each module has a key core separation device to treat the drill cuttings.
1) Vertical Cuttings drying module
Vertical cuttings dryer is the key equipment of cuttings drying module. Usually, drill cuttings are fed into the drill cuttings drying device by vacuum pump or screw conveyer. Under the action of centrifugal force, the oil will be separated from the drilling cuttings, goes through the screen opening of screen basket, and enter the collecting tank. Regarding the opening sizes of the drying screen, GN Solids Control offers 3 sizes for option: 250 microns, 350 misrcons and 500 microns, which can be used to dry cuttings of different sizes. GN Solids Control advanced design vertical cuttings dryer is equipped with a flushing system and an air knife system for cleaning the mud collecting trough and screen to avoid blockage.
2) Fine Particle Removal Module
High speed decanter centrifuge is the key equipment of this module. The liquid effluent discharged by the dryer will be pumped to a high speed decanter centrifuge for further treatment to remove fine particles in drilling fluid. In order to ensure the performance of centrifuge, the high-speed operation, the protection of vulnerable parts and the use of materials are considered in the manufacturing process of crown solid control. Long time operation and less maintenance ensure the efficiency and economic benefits of the equipment.
In the cuttings drying system, mud tanks are used to hold equipment and collect and store drilling fluids. Cuttings discharged from the drying device and centrifuge into the dryer can be conveyed through the screw conveyor device, which is widely used to transport solid materials.