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    • 87. 发明申请
    • Method for Increasing the Roughness of Injector Gripper Blocks for Coiled Tubing Operations
    • 用于提高卷管操作的注射器夹爪块粗糙度的方法
    • US20160097244A1
    • 2016-04-07
    • US14508712
    • 2014-10-07
    • BAKER HUGHES INCORPORATED
    • Silviu LivescuVivekanand SistaJohn DeloreyThomas J. Watkins
    • E21B17/20B24C1/06C23C8/68C23C8/08E21B19/22C23C4/10
    • B24C1/06C23C4/10C23C8/08C23C8/68E21B19/22
    • A method of increasing a roughness of coiled tubing injector blocks that includes providing a pair of gripper blocks each having a gripper surface configured to grip coiled tubing within an injector head and increasing a first roughness on the gripping surfaces to a second roughness. A coating may be applied to the gripping surfaces to increase the roughness. The coating may be chromium carbide, molybdenum boride, iron boride, titanium boride, or a transitional metal boride. The gripping surfaces may be treated to increase the roughness to a second roughness. The gripping surfaces may be blasted by abrasives or shot peened to increase the roughness. The second roughness may be greater than 20 μm. A system to inject coiled tubing into a wellbore may include an injector head, coiled tubing, and at least two gripper blocks having a gripping surface with a roughness of at least 20 μm.
    • 一种增加连续油管注射器块的粗糙度的方法,其包括提供一对夹持块,每个夹具具有夹持器表面,所述夹持器表面构造成夹持在注射器头部内的连续管道,并将夹持表面上的第一粗糙度增加到第二粗糙度。 可以将涂层施加到抓握表面以增加粗糙度。 涂层可以是碳化铬,硼化钼,硼化铁,硼化钛或过渡金属硼化物。 抓握表面可以被处理以将粗糙度增加到第二粗糙度。 抓握表面可以被研磨剂喷丸或喷丸硬化以增加粗糙度。 第二粗糙度可以大于20μm。 将连续油管注入井眼的系统可以包括喷射头,连续油管和至少两个具有至少20μm的粗糙度的抓握表面的夹持块。