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    • 4. 发明申请
    • APPARATUS AND METHOD FOR CONTROLLING FLUID FLOW IN A ROTARY DRILL BIT
    • 用于控制旋转钻头中流体流动的装置和方法
    • WO2010053905A3
    • 2010-08-05
    • PCT/US2009063083
    • 2009-11-03
    • BAKER HUGHES INCTEODORESCU SORIN GABRIEL
    • TEODORESCU SORIN GABRIEL
    • E21B10/18E21B10/60
    • E21B10/18E21B10/60
    • An apparatus for drilling a borehole in an earth formation is disclosed. The apparatus includes: an earth-boring rotary drill bit including a bit body having a plurality of cutters engagable with a subterranean earth formation; a fluid conduit disposed in the bit body, the fluid conduit being in fluid communication with a source of drilling fluid and configured to receive a portion of the drilling fluid; a nozzle extending between the fluid conduit and a surface of the bit body, the nozzle configured to apply a stream of the portion of the drilling fluid to a first location of the surface; and a valve assembly including an actuator and a valve, the actuator configured to move the valve and divert a flow path of the portion of the drilling fluid, thereby diverting at least part of the stream to a second location on the surface.
    • 公开了一种用于在地层中钻孔的装置。 该装置包括:钻地旋转钻头,其包括具有可与地下地层接合的多个切割器的钻头体; 设置在所述钻头体内的流体导管,所述流体导管与钻井流体源流体连通,并且构造成容纳钻井液的一部分; 喷嘴,其在所述流体导管和所述钻头体的表面之间延伸,所述喷嘴构造成将所述钻井流体的所述部分的流施加到所述表面的第一位置; 以及阀组件,其包括致动器和阀,所述致动器构造成移动所述阀并且使所述钻井流体的所述部分的流动路径转向,从而将所述流的至少一部分转移到所述表面上的第二位置。
    • 8. 发明申请
    • REVERSE NOZZLE DRILL BIT
    • 反向喷嘴钻头
    • WO2008055349A1
    • 2008-05-15
    • PCT/CA2007/002000
    • 2007-11-08
    • ND DOWNHOLE TECHNOLOGY LTD.BEN LAMIN, SadekGRAHAM, Cody
    • BEN LAMIN, SadekGRAHAM, Cody
    • E21B10/18E21B10/24E21B10/60
    • E21B10/60
    • A drill bit design that employs reverse flow nozzles through which a portion of the drilling fluid is diverted. This reverse or upward flow of drilling fluid creates a condition by which the extraction of drilling sludge (combination of drilling fluid and drilling cuttings) in the cutting area of the drill bit is more efficient and has a greater amount of flow than designs of prior art. This increased flow has the effect of more efficiently removing damaging cuttings away from the drill cutters, lubricating the drill cutters more efficiently, and cooling the drill cutters more efficiently. The end result is increased drilling uptime, increased drilling speed, and less frequent drill bit catastrophic failures.
    • 采用反向流动喷嘴的钻头设计,一部分钻井液通过该喷嘴被转向。 钻井液的这种反向或向上流动产生了钻头切割区域中钻井泥浆(钻井液和钻屑的组合)的提取更有效并且具有比现有技术设计更大的流量的条件 。 这种增加的流动具有更有效地从钻床切割破坏性切屑的机会,更有效地润滑钻刀,并且更有效地冷却钻刀。 最终结果是增加了钻井正常运行时间,提高了钻井速度,并且钻孔灾难性故障频率较低。