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    • 10. 发明申请
    • MEASUREMENT OF DOWNHOLE COMPONENT STRESS AND SURFACE CONDITIONS
    • 井下部件应力和表面条件的测量
    • WO2013126396A1
    • 2013-08-29
    • PCT/US2013/026845
    • 2013-02-20
    • BAKER HUGHES INCORPORATED
    • KUMAR, SunilJOHN, HendrikGRIMMER, HaraldKRUSPE, ThomasPETER, AndreasKOPPE, Michael
    • E21B47/007E21B47/013
    • E21B47/0006E21B47/011
    • An apparatus for measuring strain on a downhole component includes: at least one strain sensitive device disposed proximate to a surface of a component of a drilling assembly or disposed within a material forming the component; and a processor in operable communication with the at least one strain sensitive device, the processor configured to detect changes in the at least one strain sensitive device and detect at least one of erosion, crack formation and crack propagation in the component surface. An apparatus for measuring strain on a downhole component includes: at least one strain gauge deposited on a surface of a drive shaft or disposed within a material forming the drive shaft; and a processor in operable communication with the at least one strain gauge, the processor configured to detect changes in the at least one strain gauge and detect conditions affecting operation of the drive shaft.
    • 用于测量井下部件上的应变的装置包括:至少一个应变敏感装置,其设置在钻孔组件的部件的表面附近或者设置在形成部件的材料内; 以及与所述至少一个应变敏感装置可操作地通信的处理器,所述处理器被配置为检测所述至少一个应变敏感装置中的变化并且检测所述部件表面中的侵蚀,裂纹形成和裂纹扩展中的至少一个。 一种用于测量井下部件应变的装置包括:沉积在驱动轴的表面上或设置在形成驱动轴的材料内的至少一个应变仪; 以及处理器,其与所述至少一个应变计可操作地通信,所述处理器被配置为检测所述至少一个应变计的变化并检测影响所述驱动轴的操作的条件。