论文部分内容阅读
基本原理冲击反循环钻进工艺如下,是使用2根钢丝绳通过提引盘对称地提引冲击钻头,提引盘可在钻头中心管体上相对转动。在冲击液压缸的作用下,通过同步卷筒的自动调节机构,2根钢丝绳在工作状态时始终受力相等,在2根钢丝绳中空处设置排渣管,通过钻头中心管下入孔底,在钻头上下往复运动冲击破碎岩石时,用地表的砂石泵实现泵吸反循环。这样,钻头在孔底进行冲击钻进的同时,通过泵吸反循环将钻渣由孔底经排渣管、砂石泵排到地表的泥浆池中,钻渣沉淀完成渣浆分离后泥浆经过泥浆
The basic principle of impact reverse circulation drilling process is as follows, is the use of two wire rope by lifting the disk symmetrically to raise the impact of the drill bit, the disk can be cited in the center of the drill pipe relative rotation. Under the action of the impact hydraulic cylinder, through the automatic adjusting mechanism of the synchronous drum, the two steel cables always have the same force in the working state, the waste slag pipe is arranged in the hollow of the two steel wire ropes, Drill up and down the impact of reciprocating motion broken rock, with the surface of the sand pump to achieve pump reverse circulation. In this way, the drill bit at the bottom of the hole to carry out percussion drilling at the same time, through the pump suction cycle will be from the bottom of the bottom hole through the slag discharge pipe, sand pump row to the surface of the mud pool, mud sedimentation after completion of slurry separation after mud mud