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Mud Cleaner is the second class and the third class solid control equipment, which is the newest type to treat the drilling fluid. GN drilling mud cleaner are combined from Desander, Desilter and an Underflow Screen, at the same time Mud cleaner has the higher cleaning function  compared with separated desander and desilter. In addition to the reasonable design process, it equals another shale shaker . GN mud cleaner structure is compact, it occupy small space and the function is powerful. Mud cleaner is the ideal device of the second class and the third class solid control to treat the drilling mud.

DC combination of mud cleaner, including  desander, deserter, pressure gage, hydrocyclone, bottom flow slot, shale shaker, stents and pedestal. The characteristics is : between the main into pipes and main out pipes have no control deceleration insitutionsm, there are spout in the pedestal, the screen located in the spout, it is easy to use and maintain, working reliable, can remove the harmful phase quickly, improve the performance of drilling fluid, meet the requirement of the new technology of high pressure spar.

The treatment separation of the mud cleaner by the large of drilling cuttings from the well, so that, mud enter into the next separation equipment, the performance and using of mud cleaner are directly influence the next using effect of the separation equipment. The screen is according to the vibration theory of the liner motion ‘s movement locus to designed, the exciter make the screen box do back and forth movement, the solid particles in the mud is sifted out from the surface, to achieve the purpose of the solid and liquid separation.


1It is a necessary equipment of deep well and super deep well disposed the aggravation of drilling fluid, it can remove the super fine solid phase in aggravation of fluid.

2 It can effectively control the content of aggravation of drilling fluid, to prevent the pressure difference the post card, adhesion the post card and other accidents, reduce the bond issues of drilling string and the thickness.

3 Save the drilling cost

4 Improved the drilling environment

The shale shaker is the most important equipment in the drilling fluid solid control system, it is the first process of the mud purification. Not only using in deep well, but also using the shallow well, the mud must through the shale shaker to filter.

Working principle

The shale shakers are mainly drive by the electrical machine to rotate to produce the periodic changed inertia force, drilling fluid solid phase enters into the sieve screen, do the throwing movement on the sieve surface, and then the solid phase particles with different size will be removed. The separation diameters and throughput of the shale shakers are the most important factors of matching. The technology level of shale shakers mainly show at the handing ability (throughput and separated granularity), the stability of working, the length of life and the flexibility of operation. The handing ability of shale shakers is related with the structure of shale shakers, the movement locus, the vibration frequency, the vibration intensity, the area of shale shakers and the degree of thickness. In order to make the shale shakers match with the drilling machineries, the maximum displacement of the drilling pumps and the quantity of drilling cuttings produced must be considered.


Usually according to the movement locus, the shale shakers can be grouped into round screen shaker, the common elliptic screen shaker, linear screen shaker, equilibrium elliptic screen shaker. The common elliptic screen shaker: also can be called the disequilibrium elliptic screen shaker, there is a exciter devices fixed right above of the screen box barycenter, It requires the screen boxes tilt an angle, gets rid of sand by gravity, avoids the sand having the tendency of backward throwing. From this, the tilt of the screen boxes really improved the moving performance of sand, but the disposed amount of the drilling fluid reduced, this is the main shortcoming of the common elliptic screen shaker. The linear shale shakers

liner shale shaker

: Two main axises with eccentric blocks do synchronous reverse rotation to produce the liner vibration. Because the direction of the liner shale shaker is unchanged,  which makes the particles difficult to drop, and then the screen paste phenomenon appeares, which makes the valid over flowing area of screen  and throughput reduced. When the number of  screens increases, the phenomenon of screen paste will be more serious. So when the linear shale shakers use the super details screen, it could not meet the requirements of the using amount of drilling fluid.

The equilibrium ellipse screen: In recent years to develop a new type screen, the movement locus of long axis and short axis are all the same, the size and direction of the throwing angle are completely consistent. The equilibrium ellipse screen combined with the basic advantages of the round screens and liner screens, the throughput of the equilibrium ellipse screens is bigger twenty percent to thirty percent than the liner screens, is a relatively advanced drilling fluid shale shaker screens, representative the development direction of the drilling fluid shale shakers.