Usually, an oil well has its maximum level of drilling solids that can be tolerated before problems emerge. This level depends on the solids formation, the type of drilling mud used, and the characteristics of the solids. But many work-over rigs that occasionally do some drillings still do not employ solid removal equipment which seems to work satisfactorily only as long as drilling is confined to short intervals. If the solids are not removed while drilling, the circulating system will contain a constant volume of solid phase. The pit level will also remain at a constant level even through the circulating volume increases as an additional hole is drilled, (pit levels will actually rise by the volume of the drill string added to the hole). The additional solids from drilling mud will increase the mud weight. Usually many problems will arise if too many drilling solids are allowed to remain in the drilling mud. These effects do not immediately appear until the drilling solids concentrations reach excessive levels. For this reason, many drillers accustomed to drilling shallow wells with unweighted drilling mud find it hard to believe that drilling solids are the cause of their problems. Therefore, it is beneficial to take the detrimental effects of drilling solids seriously and remove them from the drilling mud.
 

The Process of Drilling Fluids Purification

The primary and the first stage of solids control equipment is oilfield shale shaker which can remove the solids above 75μm and usually combined with other solid control equipment. The second and third stage equipment are the desander that removes cuttings of 45-75μm and desilter which separates solids between 15~45μm. The desander and desliter can work together to serve as a mud cleaner. Then, the last stage is decanter centrifuge which can remove the particles above 2μm. After these steps, the drilling solids will be removed and the drilling mud can be recycled and reused.

KOSUN is a professional drilling solids control equipment manufacturer in China, which was established in 1992. Apart from vacuum degasser, KOSUN can also supply linear motion shale shaker, vacuum degasser, mud cleaner, desander, desilter, drilling fluids decanter centrifuge, centrifugal pump, screw pump, mud tank, jet mud mixer, diesel tank, shear pump, mud agitator, mud gun, water tank, etc. KOSUN has directly exported its products to the following regions: All-Russia Region, including Russia, Kazakhstan, Uzbekistan, Azerbaijan, Ukraine, Turkmenistan, Kyrgyzstan,Tajikistan, etc.; East Asia and South Asia, including Pakistan, India, Indonesia, Thailand, Burma, Malaysia, etc.; the Middle East and North Africa, including the United Arab Emirates, Kuwait, Egypt, Algeria, Libya, Sudan, etc.; America, including the United States, Canada, Mexico, Brazil, Columbia, Venezuela, etc.; Australia; Germany in Europe.