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    • 7. 发明申请
    • MULTI-PATH MULTI-STAGE EROSION-RESISTANT VALVE FOR DOWNHOLE FLOW CONTROL
    • 多通道多级防腐蚀阀门,用于井下流量控制
    • US20140224342A1
    • 2014-08-14
    • US14174575
    • 2014-02-06
    • Xiaoqi BaoMircea BadescuStewart SherritJeffery L. HallYoseph Bar-Cohen
    • Xiaoqi BaoMircea BadescuStewart SherritJeffery L. HallYoseph Bar-Cohen
    • E21B34/06
    • E21B34/10Y10T137/0368Y10T137/7738
    • A flow control valve for use in oil well bore holes is described. The flow control valve includes a plurality of flow paths connected in parallel. The flow control valve operates by successively opening different flow paths, starting with a flow path that requires a reduced force to operate its inlet valve. The flow rate through the flow control valve is conveniently controlled by opening and closing different ones of the plurality of flow paths individually or in combination. A flow path that allows fluid to flow at substantially the full flow rate of the valve is provided as one of the parallel paths. A simple mechanical design using poppet valves and at least one cam is described. The flow control valve provides advantages including digital control of the flow rate, low operating power requirements and abrasion resistance in the presence of particulates in the fluid.
    • 描述了一种用于油井钻孔的流量控制阀。 流量控制阀包括并联连接的多个流路。 流量控制阀通过依次打开不同的流动路径操作,从需要减小力来操作其入口阀的流动路径开始。 通过单独地或组合地打开和关闭多个流动路径中的不同流动方向来方便地控制通过流量控制阀的流量。 允许流体基本上以阀的全流量流动的流动路径被提供为平行路径之一。 描述了使用提升阀和至少一个凸轮的简单机械设计。 流量控制阀提供了在流体中存在微粒的情况下数字控制流量,低操作功率要求和耐磨性的优点。
    • 9. 发明授权
    • Ultrasonic rotary-hammer drill
    • 超声波旋转锤钻
    • US07740088B1
    • 2010-06-22
    • US11928069
    • 2007-10-30
    • Yoseph Bar-CohenMircea BadescuStewart SherritXiaoqi BaoSteve Kassab
    • Yoseph Bar-CohenMircea BadescuStewart SherritXiaoqi BaoSteve Kassab
    • E21B10/36
    • E21B6/08E21B7/24
    • A mechanism for drilling or coring by a combination of sonic hammering and rotation. The drill includes a hammering section with a set of preload weights mounted atop a hammering actuator and an axial passage through the hammering section. In addition, a rotary section includes a motor coupled to a drive shaft that traverses the axial passage through the hammering section. A drill bit is coupled to the drive shaft for drilling by a combination of sonic hammering and rotation. The drill bit includes a fluted shaft leading to a distal crown cutter with teeth. The bit penetrates sampled media by repeated hammering action. In addition, the bit is rotated. As it rotates the fluted bit carries powdered cuttings helically upward along the side of the bit to the surface.
    • 通过声音锤击和旋转的组合进行钻孔或取芯的机构。 该钻具包括锤击部分,其具有安装在锤击致动器顶部的一组预载重物和穿过锤击部分的轴向通道。 此外,旋转部分包括联接到驱动轴的马达,该马达横穿通过锤击部分的轴向通道。 钻头通过声音锤击和旋转的组合联接到驱动轴用于钻孔。 钻头包括通向具有齿的远端冠切割器的带槽轴。 该钻头通过重复的锤击动作穿透采样介质。 此外,该位被旋转。 当它旋转时,带槽的钻头沿着钻头的侧面向上螺旋形地加载表面的粉末切屑。