With regards to Zhananuoer Oilfield, it is one of the two oilfields ( including Zhananuoer and Kenjiyak Oilfield ) CNPC bought in Aktobe, Kazakhstan. GWDC is specially responsible for drilling and exploration in it. China National Petroleum Corporation would enjoy the right to explore in the oilfield for 2 decades, therefore, the urgent problem they need solve was a quicker speed of drilling. Besides, they also demanded a higher adaptability of solids control system applied. KOSUN is one of top 3 solids control equipment manufacturers in China who had mastered mature skills, thus, it undertook this mission to supply CNPC in this case.
 

For Zhananuoer Oilfield, KOSUN not only provided the whole set of drilling mud purification system, but also offered such after-sale services as maintenance and supply of accessories, etc as required. For these purposes, KOSUN established KOSUN Service Co., Ltd ( Kazakhstan ) on November, 2009. This company is located in Kazakhstan, but is capable to offer 5 central Asian countries and Russian regions many services like maintenance of equipment, leasing of equipment, drilling & well workover, solids control system production & assembly, of which Xi'an KOSUN Machinery Co., Ltd. will give technical supports. Afterwards, KOSUN also co-invested with "Batys-Munai" LLP in building up the first Central-Asian solids control manufacturing base.

KOSUN has been providing the drilling fluids solids control equipment and solids control system for more than 20 years, main solids control equipment include the shale shaker, shale shaker screen, desander, desilter, vacuum degasser, centrifugal pump, submersible slurry pump, shear pump, mud agitator, mud gun, drilling fluids mud cleaner, decanter centrifuge, jet mud mixer, mud tank, diesel tank, water tank, etc.