Drilling mud plays a vital role in balancing formation pressure, lubricating and cooling bit on drilling processing. Due to its high cost and severe pollution to local environment, circulation utilization of drilling mud has been adopted by most of the drilling companies. But, when pumped from down hole, the drilling mud will carry massive solids that mainly consists of cuttings from crushed rocks and bentonite and barite added for better performance. What’ more, the solids-removal effect will exert a direct influence on mud property and drilling safety. According the contribution to drilling mud, the solids can be classified as useful and unuseful particles which mainly contains drilling cuttings. Excessive massive solids will increase pressure more than formation pressure, and drilling mud will permeate into strata while fine particles will enter into oil channel which results in blockage causing damage of oil reservoir.

Improper treatment of drilling mud is the primary cause of well kick and blowout which are the commonest accidents occurred in drilling processing. Massive solids will increase density and viscosity of drilling mud, causing formation breakdown and well kick. In addition, massive solids will loosen and thicken mud cake, increase cakes friction which leads to wall damage and borehole collapse. Besides, excessive existence of solids gives rise to energy consumption, rig accidents and short service life.
 

So, how to achieve the reasonable solids control of drilling mud is an important issue. At the earliest time, drillers adopted gravity sedimentation theory to remove undesirable solids. However, this time-consuming application failed to achieve the ideal effect anyway. To achieve better purification performance, KOSUN has brought large number of talents together to research and develop series of solids control equipment since 1992, which includes shale shaker, desander, desilter, decanter centrifuge, vacuum degasser and complete solids control system. Over 20-year of development, KOSUN is capable of customizing specific solids control system for different operation capacity and environment.

Established in 1992 and headquartered in Xi’an China, Xi’an KOSUN Machinery Co,. Ltd. ( KOSUN ) is among the first group of manufacturers of oil and gas drilling mud circulating equipment, and is the forerunner of solids control equipment in China and an expert in drilling waste management. It is specialized in decanter centrifuge and shale shaker which won high recognition and praise at home and abroad with science core technique and a lot of innovative patents. Its business scope mainly covers China mainland, Commonwealth of Independent States, North Africa, Australia, U.S.A., etc.