Solids control equipment includes many other equipments,We need to clean every different equipment step by step,when make purification .and when gas migrate to the drilling fluids ,we can make the mud of purification from shale shaker go into the setting pit of mud purification tank,and then ,we can use the pumping function of vacuum pump within degasser,causing negative pressure within vacuum tank,which can make separation within degasser through the function of barometric pressure. then the separated gas discharge to the top of derrick and pull out the air.
If no gas in the solids control system,we may act vacuum degasser as a big agitator for the drilling mud,and then,which can not keep the mud sediment in purification tank in order to gain cleaning mud from shale shaker.and the underset enter into the special tank under mid-speed centrifuge so that separating once again through the second high-speed centrifuge ,after separation ,the mud included heavy crystal go back to the mud purification tank ,and keep the performance of mud steady .
When the mud under the site of aggravation in the solids control system ,Because the decanter centrifuge not only harm the solids phase removing ,but also remove the weight material together ,this way can reduce the mud weight quickly ,lost material heavily .
we need to use two sets centrifuge in series in order to avoid loosing weight material and get the aim of removing harmful solids phase.According to the request of complete mud purification system in solids control system,the handling capacity of desander need to achieve normal amount of mud flow above ,plus ,which can make the mud purification fully and reduce the content of sand in drilling mud.
