在松散的卵砾石层和砂层钻进中,泥浆的含沙量对钻探成本有很大影响,其处置又很费时.目前,循环净化泥浆采用的多是直线型泥浆槽. 笔者在Z型泥浆槽的基础上,设计了一种Z-SL除沙循环系统,它具有结构简单、容易使用、沉沙速度快、泥浆净化程度高等特点,而且是靠泥浆本身的水力性质来沉沙和净化. 泥浆净化系统如图1所示,泥浆携带孔底沙子返出孔口,经过Z型泥浆槽先沉出颗粒较大的沙子,进入除沙器 In the loose gravel layer and sand drilling, mud sediment concentration on drilling costs have a great impact, its disposal is very time-consuming.Currently, the cyclical purification of mud is mostly used in linear trough.I author in the Z-type Based on the slurry tank, a Z-SL desilting circulation system is designed, which has the advantages of simple structure, easy to use, quick settling velocity and high degree of purification of mud, but also settling and purifying by the hydraulic properties of the slurry itself Mud Purification System As shown in Figure 1, the mud carries the sand at the bottom of the hole back through the orifices and passes through the Z-shaped mud tank to first sink larger particles of sand into the desander