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2. 发明授权

US06176328B1 Drill pipe protection rings and method of using the same 失效
标题翻译：钻管保护环及其使用方法
公开(公告)号：US06176328B1
公开(公告)日：2001-01-23
申请号：US09363126
申请日：1999-07-28
申请人： Miles F. Caraway , Douglas D. Hall
发明人： Miles F. Caraway , Douglas D. Hall
IPC分类号： E21B1200
CPC分类号： E21B17/1042 , E21B17/00
摘要： Drill pipe protection rings for filling external identification slots in drill pipe tool joints prevent damage to the internal seals of a drilling head. The rings are formed from resilient elastomeric materials. In cross-section, each ring has slightly convex inner and outer surfaces, and a series of circumferentially spaced-apart, hemispherical bumps located along its inner surface. One ring is mounted within each slot on each drill pipe section. The rings stretch slightly while being installed, but form a tight fit once they are properly seated. When installed, the outer surfaces of the rings will protrude slightly outward from or beyond the slots. The hemispherical bumps help align and center the rings within the slots. Without the rings, sharp edges of the slots on the drill pipe tool joints could cause severe damage as they passed through the drill head. However, with the rings, the outer surfaces of the slots are substantially filled to prevent their edges from cutting or gouging the elastomers.
摘要翻译：用于在钻杆工具接头中填充外部识别槽的钻管保护环可防止损坏钻头的内部密封。环由弹性弹性体材料形成。在横截面中，每个环具有略微凸起的内表面和外表面，以及沿其内表面定位的一系列周向间隔开的半球形凸块。一个环安装在每个钻杆部分的每个槽内。戒指在安装时稍微延伸，但一旦安装正确，就会形成紧身型。当安装时，环的外表面将从狭槽向外突出或突出。半球形凸块有助于使槽内的环对准并居中。没有环，钻杆工具接头上的槽的尖锐边缘可能会在穿过钻头时造成严重损坏。然而，通过这些环，槽的外表面基本上被填充以防止其边缘切割或刨削弹性体。

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