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    • 4. 发明授权
    • Methods and apparatuses for estimating drill bit cutting effectiveness
    • 估算钻头切削效率的方法和装置
    • US08016050B2
    • 2011-09-13
    • US12263660
    • 2008-11-03
    • Sorin Gabriel Teodorescu
    • Sorin Gabriel Teodorescu
    • E21B7/00E21B44/00E21B47/00
    • E21B44/00E21B10/00E21B12/02E21B47/011
    • A drill bit for drilling a subterranean formation includes a plurality of cutting elements and a shank extending from a bit body. A set of accelerometers disposed in the drill bit include a radial accelerometer and a tangential accelerometer. An annular chamber is formed within the shank. A data evaluation module is disposed in the annular chamber and includes a processor, a memory, and a communication port. The data evaluation module is configured for performing a bit acceleration analysis. The analysis includes sampling acceleration information from the radial accelerometer and the tangential accelerometer over an analysis period and storing the acceleration information in the memory to generate an acceleration history. The acceleration history is analyzed to determine a cutting effectiveness of the cutting elements responsive to changes in the acceleration history. The cutting effectiveness is reported through the communication port.
    • 用于钻探地层的钻头包括多个切割元件和从钻头体延伸的柄。 布置在钻头中的一组加速度计包括径向加速度计和切向加速度计。 在柄内形成环形室。 数据评估模块设置在环形室中,并包括处理器,存储器和通信端口。 数据评估模块被配置为执行位加速度分析。 分析包括在分析周期内从径向加速度计和切向加速度计采样加速度信息,并将加速度信息存储在存储器中以产生加速历史。 分析加速历史以根据加速历史的变化确定切割元件的切割效果。 切割效果通过通讯口报告。
    • 5. 发明申请
    • METHODS AND APPARATUSES FOR ESTIMATING DRILL BIT CONDITION
    • 用于评估钻头位置条件的方法和装置
    • US20100212961A1
    • 2010-08-26
    • US12391665
    • 2009-02-24
    • Sorin Gabriel Teodorescu
    • Sorin Gabriel Teodorescu
    • E21B12/02E21B10/42
    • E21B10/42E21B12/02
    • A drill bit for drilling subterranean formations includes a bit body bearing at least one gage pad and a shank extending from the bit body. An annular chamber is formed within the shank. A data evaluation module is disposed in the annular chamber and includes a processor, a memory, and a communication port. The data evaluation module estimates a gage pad wear by periodically sampling a tangential accelerometer and a radial accelerometer disposed in the drill bit. A history of the tangential acceleration and the radial acceleration is analyzed to determine a revolution rate, gage-slipping periods, and gage-cutting periods. A change in a gage-pad-wear state is estimated responsive to an analysis of the revolution rate, the at least one gage-cutting period and the at least one gage-slipping period. The determination of the gage-pad-wear state may also include analyzing a formation hardness.
    • 用于钻探地下地层的钻头包括承载至少一个量具垫和从钻头体延伸的柄的钻头体。 在柄内形成环形室。 数据评估模块设置在环形室中,并包括处理器,存储器和通信端口。 数据评估模块通过周期性地采样设置在钻头中的切向加速度计和径向加速度计来估计测量垫磨损。 分析了切向加速度和径向加速度的历史,以确定转速,计量滑移周期和计量切割周期。 响应于转速,至少一个计量切割周期和至少一个计量滑移周期的分析来估计量具垫磨损状态的变化。 量规磨损状态的确定还可以包括分析地层硬度。
    • 8. 发明授权
    • Methods and apparatuses for estimating drill bit condition
    • 用于估算钻头状况的方法和装置
    • US08028764B2
    • 2011-10-04
    • US12391665
    • 2009-02-24
    • Sorin Gabriel Teodorescu
    • Sorin Gabriel Teodorescu
    • E21B7/00E21B44/00E21B47/00
    • E21B10/42E21B12/02
    • A drill bit for drilling subterranean formations includes a bit body bearing at least one gage pad and a shank extending from the bit body. An annular chamber is formed within the shank. A data evaluation module is disposed in the annular chamber and includes a processor, a memory, and a communication port. The data evaluation module estimates a gage pad wear by periodically sampling a tangential accelerometer and a radial accelerometer disposed in the drill bit. A history of the tangential acceleration and the radial acceleration is analyzed to determine a revolution rate, gage-slipping periods, and gage-cutting periods. A change in a gage-pad-wear state is estimated responsive to an analysis of the revolution rate, the at least one gage-cutting period and the at least one gage-slipping period. The determination of the gage-pad-wear state may also include analyzing a formation hardness.
    • 用于钻探地下地层的钻头包括承载至少一个量具垫和从钻头体延伸的柄的钻头体。 在柄内形成环形室。 数据评估模块设置在环形室中,并包括处理器,存储器和通信端口。 数据评估模块通过周期性地采样设置在钻头中的切向加速度计和径向加速度计来估计测量垫磨损。 分析了切向加速度和径向加速度的历史,以确定转速,计量滑移周期和计量切割周期。 响应于转速,至少一个计量切割周期和至少一个计量滑移周期的分析来估计量具垫磨损状态的变化。 量规磨损状态的确定还可以包括分析地层硬度。
    • 10. 发明申请
    • APPARATUS AND METHOD FOR CONTROLLING FLUID FLOW IN A ROTARY DRILL BIT
    • 控制旋转钻头中流体流动的装置和方法
    • US20100108390A1
    • 2010-05-06
    • US12264659
    • 2008-11-04
    • Sorin Gabriel Teodorescu
    • Sorin Gabriel Teodorescu
    • E21B10/42
    • 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; 在所述流体导管和所述钻头体的表面之间延伸的喷嘴,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。