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    • 7. 发明申请
    • COMPOSITE SEGMENTING BACKUP RING FOR A SUBTERRANEAN PLUG
    • 用于底盘插头的复合分隔支撑环
    • WO2015164054A1
    • 2015-10-29
    • PCT/US2015/024461
    • 2015-04-06
    • BAKER HUGHES INCORPORATED
    • KELLNER, Justic C.O'MALLEY, Edward J.MICKEY, Clint E.ROSENBLATT, Steve
    • E21B33/12E21B33/128E21B33/00
    • E21B33/128E21B33/129E21B33/1291
    • A composite plug that can be used in fracturing has backup rings for the seal that are preferably made of a composite material. The backup rings are essentially connected segments that allow the connections to break when the plug is set and the cones are brought closer together. When the rings break to form gaps between segments in a specific ring, the adjacent ring has offset gaps so that as a whole there are no extrusion gaps that would allow the seal element to pass. The rings can be rotationally locked to each other initially at the adjacent segments that are formed when the plug is set to maintain their relative positions so that gaps between segments adjacent the seal are overlapped with segments from the adjacent ring. The segmenting backup rings can be used on one or on both sides of a sealing element.
    • 可用于压裂的复合塞子具有优选由复合材料制成的用于密封件的支撑环。 支撑环基本上是连接的部分,当插头被设置并使锥体靠近在一起时,允许连接断开。 当环断裂以在特定环中的段之间形成间隙时,相邻的环具有偏移的间隙,使得整体上不存在允许密封元件通过的挤出间隙。 这些环可以最初在相邻的片段彼此旋转地锁定,这些相邻的片段被设置成保持它们的相对位置,使得与密封件相邻的片段之间的间隙与相邻环的片段重叠。 分段支撑环可用于密封元件的一侧或两侧。