The solid control system working principle is also called mud cleaning system, which is used to deal with the mud in the middle of the oil well drilling. The main devices of the solid control system working principle includes shale shaker, mud cleaner , mud agitator, stack sizer as well as other kinds of devices. And there are nearly four kinds of solid control system working principles.
The first solid control system working principle is dilution method. In order to judge this kind of solid control system working principle, it is possible to make an example. If there is a solid control system with 160 cubic meters, it is hard to pump and circulate due to the higher viscosity caused by the solid content has reached 20% of that of the volume of the solid control system working principle. In order to solve this problem, if you would like to use dilution method to reduce the solid content to 10%, it is necessary to add clear water of 160 cubic meters to the mud to transform the original mud of 160 cubic meters with 20% solid into 320 cubic meters mud with 10% solid. When increase the storage vessel of the mud, the production cost of the mud will be increased largely. And the performance of diluted mud will be changed, which is able to limit the dilution method of the solid control system.
The second solid control system working principle is interchange method. The interchange method is to use clear water or qualified mud to replace some certain volume mud with high solid content, so as to reduce the solid content of the mud. Generally, it is possible to use clear water to replace mud inside of well. However, in particular cases, if the mud inside of wells is oil base mud, it is possible to use new mud to replace. If you would like to reduce the solid content of the solid control system from 20% to 10%, it is possible to discharge 50% mud and add to clear water with the same volume instead so as to gain 160 cubic meters mud with 10% solid content. Therefore, using interchange method is much better than the dilution method because the former reduces the dosage of clear water and reduce the cost of dealing with the performance of the mud, lessening the discharge of the mud disposal.
The third solid control system working principle is precipitation method. This kind of method is to use the proportion difference of solid and liquid to make the solid sink down and separate under the function of gravity. Add flocculant to the mud to bond the solids, which is able to enlarge the size of the solid and to accelerate the sediment speed. And it is possible to add viscosity reducer to the mud to reduce viscosity of the mud and speed up sediment. However, the chemical binder cannot remove grit alone.
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