Drilling mud is recirculated throughout the drilling process. As it rises to the surface, it passes through screens that trap the materials from the borehole, before being cycled back into the solids control system that delivers mud to the head of the drill bit. This recirculation process is designed to cut down on waste by reusing as much mud as possible. Depending on the materials being drilled, several screens may be needed to trap the materials, and sometimes the materials themselves are also coated in mud, which means that they will need to be cleaned even after filtration.

Some environmental problems have been associated with drilling mud. Historically, contaminated and dirty mud was dumped in open pits, allowing the natural environment to become polluted. Additionally, very aggressive chemicals are sometimes used to clean materials brought up when filtration was not sufficient. These chemicals can pollute the environment as well, generating a variety of environmental problems. Many companies that conduct drilling retain a compliance engineer who is responsible for monitoring the environmental impact of drilling activities, with the engineer ensuring that the company conforms with the law and its own internal environmental standards.So the solid control and waste management is so important.

KOSUN leads the industry in engineering drilling fluid systems and additives that improve efficiencies, reduce costs and minimize environment impact in China. KOSUN is widely recognized for developing solutions for downhole problems, from the simple to the complex. KOSUN has been providing a complete line of Solids Control Equipment for the Oilfield Industry and the Environmental Industry for over 20 years.And KOSUN can manufacture a full set of solid control in drilling.

KOSUN can provide customers with several series as oil & gas drilling solids control equipment, centrifuges and drilling waste treatment equipment, etc.

KOSUN is a leader in China's solids control industry and expert in drilling waste management. KOSUN is capable of providing customers with such four series as oil & gas drilling solids control equipment, centrifuges, drilling waste treatment equipment and drilling security equipment, including 25 categories of products, and can also customize packaged design and matching products of oil & gas drilling rigs for drilling contractors. The products provided by KOSUN are extensively used in oil & gas drilling and workover, coalbed methane drilling, shale gas drilling, water well, geothermal well drilling, trenchless horizontal directional crossing projects, mine gravel staged treatment, tailings treatment, rive dredging works, municipal environment-friendly sewage treatment, industrial wastewater treatment, fruit juice purification, waste oil recovery and purification treatment, etc.