What are the Equipment Functions of Drilling Waste Management?

The equipment of drilling waste management includes: drying shaker, mud cleaner, vertical  cuttings dryer, decanter centrifuge, screw conveyor, screw pump, etc. The treatment process of this set of equipment can be divided into two parts: 1. Solid-liquid separation and waste residue recovery unit. 2. Waste drying unit.

According to the processing process of the two parts, the functions of the system equipment are:

1. In the stage of solid-liquid separation and waste residue recovery, the treatment equipment in this stage includes drying shaker and mud cleaner. 

1) The function of drying shaker is to recover the mud in the drill cuttings, so that the liquid content/oil content in the drill cuttings can be reduced to around 10%, and recover part of the drilling mud, thereby reducing drilling costs and drilling waste amount, and reducing pollution to the environment.

2) The function of mud cleaner is to further separate the solid phase of smaller particles by drying shaker, and dispose of the sand and slurry in the mud.

2. Waste drying unit, the processing equipment in this stage are screw conveyor, vertical cuttings dryer, screw pump, and drilling fluid centrifuge.

1) The function of screw conveyor is mainly used to transport powdery, granular and small block materials. It’s not suitable for conveying metamorphic, viscous and easy to agglomerate materials. At this time, the main function of screw conveyor is to send the waste residue filtered by the drying shaker, desander and desilter into vertical cuttings dryer for drying.

2) The main function of vertical cutting dryer is to separate solid and liquid phases by the principle of centrifugal separation. It can effectively recover the liquid phase components in the drill cuttings, make the solid phase very dry, and reduce the mud content in drill cuttings to a lower level.

3) The main function of screw pump is the ideal transfer pump for oil-water separation equipment and sewage treatment equipment. It can transport all kinds of medium that are difficult to convey. Screw pump has the advantages of high efficiency, strong self-priming ability and wide application range. At this time, the function of screw pump in this system is to supply the slurry to the centrifuge for re-separation.

4) The main function of centrifuge is to recover barite, remove fine solids, reduce the solid content of drilling fluid, control the density and viscosity of drilling fluid, ensure the performance of drilling fluid. It plays an important role in fast drilling.