Mar 10

Where there is a drilling, there are drilling cuttings. And all drilling cuttings need to be well treated, which means the oil or any other additional drilling agents should be removed as much as possible and the polluted soil, need to be discharged safely, if not safe enough to be returned to where it is from.
In many countries in the world, the drilling cuttings waste management system is a compulsory procedure in an oil and gas drilling project, alongside the drilling rig.

A drilling rig solids control system normally contains several steps for separation: shale shaker, desander cones, desilter cones and one or two decanter centrifuges. Among those, the shale shakers take the heaviest separating duty, for choosing out all solids particles bigger than 100 microns. While the desander and desilter, by using their 10 inch and 4 inch cones, are used to choose out particles of 70 and 20 microns. Barite in the drilling fluid is recovered by a middle speed decanter centrifuge, while fine particles are to be handled by a high speed decanter centrifuge.
In practice, most of discharges are from the shale shakers and those discharges are quite wet, too wet to be disposed or even transported. A vertical cuttings dryer is mainly used for treating the disposals from the shale shakers. GNCD930E-GP vertical cuttings dryer is quite efficient in this work, it could reduce the OOC to be less than 0.5%. After the vertical cuttings dryer, there should be a high speed decanter centrifuge to treat the discharged liquid phase from the vertical cuttings dryer, for separating out the fine particles which are left. Here, a GNLW363CG-VFD centrifuge is quite an ideal option.
Recently, GN Solids Control just finished the manufacture for several sets of such drilling cuttings separation units, now they are ready to be delivered to Russia.


written by shale shaker

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