The Solids Removal Unit (SRU) is an essential component of the drilling fluid processing system. Its main purpose is to remove solid particles from the drilling fluid through mechanical or other methods to maintain stable drilling fluid performance and improve drilling efficiency.

Common solids removal unit (SRU) includes shale shakers, desandersdesilters, and decabter centrifuges and mixing tank with hopper and agitator.

The shale shaker is the first line of defense for solids removal, separating large solid particles from the drilling fluid through high-frequency vibration. Shale shakers are typically equipped with replaceable screen meshes, and the mesh size determines their ability to separate solid particles. Modern shale shaker designs often employ multi-stage screens to improve separation efficiency.

Desanders desilters utilize hydrocyclone principles to separate smaller solid particles from the drilling fluid through centrifugal force. Desanders are mainly used to remove solid particles between 45-75 microns, while desilters can remove smaller particles between 15-45 microns. These devices are typically used in conjunction with shale shakers to form a multi-stage solids removal system.

The decanter centrifuge is an advanced solids removal device that separates minute solid particles from the drilling fluid through centrifugal force generated by high-speed rotation. Centrifuges not only have high processing efficiency but can also handle drilling fluids with higher solid content, making them particularly effective in processing high-gravity solids.

In drilling operations, the application of solids removal units is very extensive. For example, in shale gas development, due to the complexity of the formation and the numerous formations encountered during drilling, the solid particle content in the drilling fluid is often high. By reasonably configuring solids removal equipment such as shale shakers, desanders, desilters, and centrifuges, the performance stability of the drilling fluid can be effectively maintained, and drilling efficiency can be improved.

Furthermore, with the increasing awareness of environmental protection, solids removal units also play a significant role in drilling waste management. By effectively removing solid particles from the drilling fluid, the volume and weight of waste can be reduced, lowering disposal costs and minimizing environmental pollution.

The Solids Removal Unit plays a vital role in drilling operations. By rationally configuring and using solids removal equipment such as shale shakers, desanders, desilters, and centrifuges, the performance stability of the drilling fluid can be effectively maintained, drilling efficiency can be improved, and drilling costs and environmental pollution can be reduced. With the continuous development of drilling technology, the performance and efficiency of solids removal units will also continuously improve, providing more reliable technical support for oil drilling operations.