Vertical cuttings dryer and High G dryer is the 2 major processing equipment for drilling cuttings treatment. But many clients do not know the difference. Here is a sample introduction of the 2 drilling waste management to help clients find the right model equipment:
1) Vertical Cuttings Dryer (VG dryer)
Vertical Cuttings Dryer utilizes centrifugal force to dry drill cuttings with oil or synthetic base. The stainless steel screen basket rotates at speed up to 900 RPM, which generates G force up to 420 G to separate the drilling cuttings. The solids bigger than the screen opening will be blocked by the screen and fall down, the fine solids and liquid will go through the screen and recovered by the dryer. Tungsten carbide protects the flights from abrasive solids and ensures long operational life. This aids in maintaining a constant gap between the scroll and screen bowl, which is crucial for proper operation.
2) High G dryer (It is also called as cuttings dryer, HG dryer, or high G drying shaker)
GN High G Force Drying shaker is design for primary solids control and drying the cuttings from the primary solids control equipment (solids control shale shaker, mud cleaner, desander, and desilter), recover useable drilling fluids and ultra-fine sands, provide solids in a consistently stackable and conveyable form and requires no expensive chemicals or polymers.
GN high G drying Shaker can generate G force Up to 8.0 G. The G force is adjustable. The high G force and achieve a dryer solids separation and recovery more usable drilling fluids, while the shaker screen servicing time will be shorten. The lower G force and ensure a longer life time of the shaker screens. The operation people can balance the performance and screen servicing time depending on the mud condition.
In many case, the drilling rig will utilize water base mud in some stage and then oil base mud will be used for deeper drilling. Clients can choose booth VG dryer and HG dryer in their pitless drilling cuttings recovery system. Equip a dual discharge on the screw conveyor for feeding. Job site can choose to treat with VG or HG flexibly.