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    • 4. 发明申请
    • Wear sleeve
    • 穿袖子
    • US20040173382A1
    • 2004-09-09
    • US10479442
    • 2003-12-01
    • Stein StrandPer Gunnar NilsenAtle Stlan Vaalana
    • E21B017/07
    • E21B17/1085E21B17/042
    • Wear sleeve for a drill pipe coupling (10), where a sleeve (18) is arranged in a drill pipe coupling on one of the two adjoining, coupled together drill pipes (12, 14) in a drill string, where the sleeve has an outer diameter that is larger than the outer diameter of the drill pipe coupling (10) and which comprises an inner continuous bore. The inner bore comprises a threaded section (22a) arranged for joining together with a corresponding outer threaded section (22) at the one end of the drill pipe coupling (10), whereupon the sleeve (18) is arranged to be securely fastened in the drill pipe coupling to form a wear sleeve.
    • 用于钻杆联接器(10)的磨损套筒,其中套筒(18)布置在钻杆中,该钻杆联接在钻柱中的两个邻接的钻杆(12,14)中的一个上,其中套筒具有 外径大于钻杆联接器(10)的外径,并且包括内连续孔。 内孔包括螺纹部分(22a),其布置成在钻杆联接器(10)的一端处与相应的外螺纹部分(22)接合在一起,于是套筒(18)被布置成牢固地固定在 钻杆联轴器形成磨损套筒。
    • 5. 发明申请
    • Downhole tool
    • 井下工具
    • US20040140131A1
    • 2004-07-22
    • US10716898
    • 2003-11-18
    • Hector Fillipus Alexander Van Drentham Susman
    • E21B004/14E21B017/07
    • E21B31/113E21B4/14E21B6/06
    • A downhole tool for generating a longitudinal mechanical load. In one embodiment, a downhole hammer is disclosed which is activated by applying a load on the hammer and supplying pressurizing fluid to the hammer. The hammer includes a shuttle valve and piston that are moveable between first and further position, seal faces of the shuttle valve and piston being released when the valve and the piston are in their respective further positions, to allow fluid flow through the tool. When the seal is releasing, the piston impacts a remainder of the tool to generate mechanical load. The mechanical load is cyclical by repeated movements of the shuttle valve and piston.
    • 用于产生纵向机械载荷的井下工具。 在一个实施例中,公开了一种井下锤,其通过在锤上施加负载并将加压流体供应到锤来激活。 锤子包括梭阀和活塞,其可以在第一和另外的位置之间移动,当阀和活塞处于其相应的其它位置时,梭阀和活塞的密封面被释放,以允许流体流过工具。 当密封件释放时,活塞冲击刀具的其余部分以产生机械负载。 机械载荷通过梭阀和活塞的重复运动而循环。