The overall layout and process of solids control system is worthy of careful fastidious, for the work performance and responsible for the cleanup task of each kind of solids control equipment are fixed, which cannot be replaced by each other, and order cannot be reversed. The general layout and process sequence is the shale shaker, vacuum degasser, desander (desilter or mud cleaner), decanting centrifuge.
solids control system
Since the drilling fluid from wellhead back out with a large number of cuttings (harmful solid), through the wellhead elevated drilling mud tank (with a certain slope horizontal)under the action of gravity to the first level purifying equipment down stream entrance – shale shaker,screening by shale shaker, the harmful particles larger than mesh will be discharged.
shale shaker
When the drilling fluid gas extraction, get drilling fluid through shale shaker’s purification in sand tank, using suction function of degasser vacuum pump, cause negative pressure in the vacuum tank, drilling fluid under the influence of the atmospheric pressure into the deaerator for separation, gas separating out the row to the top of the vent, in addition to gas after the drilling fluid in the exhaust cavity rotor drive lower purification tank into the drilling fluid in the second chamber.
vacuum degasser
If the drilling fluid does not contain gas, vacuum degasser can be used as high-power mud agitator, keep the drilling fluid purification tank does not precipitate.