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    • 3. 发明申请
    • DOWNHOLE BALL MECHANISM WITH ENHANCED DRIFT CLEARANCE
    • 卧式球机构具有增强的清除间隙
    • WO2010040095A3
    • 2010-05-27
    • PCT/US2009059436
    • 2009-10-02
    • HALLIBURTON ENERGY SERV INCINGLIS PETER
    • INGLIS PETER
    • E21B34/14
    • E21B34/14E21B2034/002
    • A downhole tool 50 including a ball valve 60 having a pivotal ball 100 and providing full drift clearance through a fluid pathway 70 of the valve 60 over a portion of a pivotal range of the ball 100 is described. An internal bore 110 of the ball 100 includes a first opening 120 larger than a second opening 130, and the internal bore 110 transitions between the first opening 120 and second opening 130. The first opening 120 overlays or encompasses an opening formed by a first bore portion 80 over a range of pivot of the ball 100, and the second opening 130 may be fully encompassed by an opening formed by a second bore portion 90 over a pivotal range when the internal bore 110 is not centrally aligned with the first bore portion 80 or second bore portion 90.
    • 描述了一种井下工具50,其包括具有枢转球100的球阀60,并且通过球60的枢转范围的一部分上的阀60的流体通道70提供完整的漂移间隙。 球100的内孔110包括比第二开口130大的第一开口120,并且内孔110在第一开口120和第二开口130之间转变。第一开口120覆盖或包围由第一孔 当球内部孔110不与第一孔部分80中心对准时,第二开口130可以由第二孔部分90形成的开口完全包围在球100的一个枢转范围上, 或第二孔部分90。