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    • 4. 发明公开
    • 공기상승프로세스를위한보링장치
    • 反向循环的钻孔工具
    • KR1020000022364A
    • 2000-04-25
    • KR1019980710794
    • 1997-05-14
    • 비르트 마쉬넨 운트 보어게래테-파브릭 게엠베하
    • 티부쌕프리츠
    • E21B10/28
    • E21B10/18E21B10/04E21B10/06E21B10/28E21B21/12E21B21/14
    • PURPOSE: A drilling tool with efficient suction behavior with which the material loosened from the cutting elements is completely sucked off from the sole of the borehole, without a repeated intervention of the cutting elements with the material already loosened is provided CONSTITUTION: At the top of the drilling heading(10), hollow drill pipes(50) is connected with an internal transfer-channel(51) and from its lower surface miscellaneous items mixed with the rinsing liquid are removed by the transfer-channel(51). Under discharge of the drilling property in the air lifting procedure, radially inward running cross-flow(Q) is produced with high velocity of flow at the lower surface of the drilling tool head(10). The hollow drill pipes(50) with an internal transfer-channel(51) for the discharge of the drilling property have a cutting elements(2) which its lower surface(1) is distributed over the cross section and a suction opening for drilling property mixed with the rinsing liquid and is formed as down and openly, radially extending channel(5) and end part situated to the center is in fluid connection with the transfer-channel(51).
    • 目的:具有高效吸力性能的钻孔工具,从切割元件松开的材料从钻孔的底部完全吸出,而不会对已经松动的材料重复进行切割元件的介绍。构成:在顶部 钻头(10),空心钻管(50)与内部转移通道(51)连接,并且从其下表面通过转移通道(51)除去与冲洗液体混合的杂项。 在空气提升过程中在钻井性能的排放下,在钻具头(10)的下表面处以高流速产生径向向内运行的横流(Q)。 具有用于排出钻孔性质的内部转移通道(51)的空心钻管(50)具有切割元件(2),其下表面(1)分布在横截面上,并具有用于钻探属性的抽吸开口 与冲洗液体混合并且形成为向下且公开的径向延伸通道(5),并且位于中心的端部与转移通道(51)流体连接。