Conditions for Improving Work Efficiency of Drilling Mud Desander

Desander is generally used for non-weighted drilling fluid, but some experts recommend it can be used in handling drilling fluid which is 1.30 ~ 1.44g / cm3, since the majority of these barite particles in the range of mud, within the scope of this density will not cause a lot of barite loss. Under normal operating conditions, the underflow density should be 0.3 ~ 0.6g / cm3 higher than the drilling fluid density in the inlet. Another method of determining that, if the amount of sand in inlet drilling fluid is about 6%, after desanding cleaner handle, its overflow sand content should be traces.

To achieve the best desanding effect of the solid phase, hydrocyclone underflow stream mouth should form an umbrella, and accompanied by oral inhalation of air flow from the bottom. Umbrella flow of drilling fluid loss is proportional to the surface area of the discharge of solid particles. Its high removal efficiency of the wall and the bottom orifice wear light. The string-like flow indicate drilling fluids and solid particles before reaching the stream mouth to lose the relative motion, underflow mouth without air intake, low separation efficiency, walls and bottom orifice wear big, to reach the bottom orifice finer particles do not flow from the bottom mouth and discharged from the overflow outlet. High-density clusters of excretion underflow density than the umbrella underflow. But it can not be measured by its density cleaner to remove grit removal efficiency of solids. Should be cleared within a unit time to evaluate the weight of solids.
 

Desander cyclone head of water at a certain job, rather than work under some pressure. Generally require a 23 ~ 27m (75 ~ 90ft) of the indenter. Working pressure is the amount of pressure on the head by the drilling fluid density. Therefore, the higher the density of the drilling fluid, the working pressure should be greater. For 27m head of water pressure (MPa) = 0.27 * drilling fluid density. Under normal circumstances, a centrifugal pump to maintain the 0.24 ~ 0.31MPa (35 ~ 45psi) pressure. Excessive pressure will accelerate wear and affect the separation point.

Underflow mouth sometimes blocked, it can be clear or by adjusting the bottom orifice. Continuity blockage may be shale shaker work well, resulting in a solid phase containing excessive. Underflow in advance to transfer large outlet and improve the efficiency of shale shaker.

KOSUN, with more than 20 years experience of designing and manufacturing solids control equipment used in oil & gas extraction, provides full range of drilling waste management equipment and solids control equipment mainly including shale shaker, desander, desilter, mud cleaner,decanter centrifuge ,vacuum degasser and complete solids control system. KOSUN reduces the drilling waste at well source where solids control equipment are involved. KOSUN's advanced engineers will collaborate with you to fully understand the project priorities and customize the proper solids control equipment for benefit maximization and reduction of local environmental pollution.