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    Chevron seal for a well tool
    2.
    发明授权
    Chevron seal for a well tool 失效
    雪佛龙密封为一个很好的工具

    公开(公告)号：US5309993A

    公开(公告)日：1994-05-10

    申请号：US832928

    申请日：1992-02-10

    申请人： Robert J. Coon ,  Steve Jennings ,  Mark E. Hopmann

    发明人： Robert J. Coon ,  Steve Jennings ,  Mark E. Hopmann

    IPC分类号： E21B33/00 ,  E21B33/12 ,  E21B34/00 ,  E21B34/14 ,  E21B33/10 ,  F16J15/16

    CPC分类号： E21B33/1208 ,  E21B34/14 ,  E21B2033/005 ,  E21B2034/007

    摘要： A sealing apparatus is provided for sealing between concentric relatively moveable tubular members. The sealing apparatus is comprised of a plurality of retainer seal rings, made of a high temperature thermoplastic, and between each retainer seal ring is a thermoplastic seal ring constructed of a normal temperature service thermoplastic. The thermoplastic seal rings are alternately spaced with the high temperature thermoplastic retainer seal rings. The retainer seal rings and the thermoplastic seal rings are cylindrical rings having a radial cross-section of a general chevron shape. Energization to press both sets of seals into sealing engagement with the two relatively moveable tubular members is accomplished by the interaction of an axial interference fit between alternating seal rings, a diametrical interference fit between the relatively moveable wellbore surfaces and the seal rings, and wellbore fluid pressure. Wellbore fluid pressure pushes against the female portion of the general chevron shape to flare outward the retainer seal rings into sealing engagement with the relatively moveable tubular members. At higher wellbore temperatures, the retainer seal rings, which are alternated every other one with the thermoplastic seal rings, maintain the shape of the thermoplastic seal rings so that they will sealingly engage the relatively moveable members when the seal assembly is cooled from higher wellbore temperatures to lower wellbore temperatures.

    摘要翻译： 提供密封装置用于在同心相对可移动的管状构件之间进行密封。 密封装置包括多个由高温热塑性材料制成的保持器密封环，并且在每个保持器密封环之间是由常温维护热塑性塑料构成的热塑性密封环。 热塑性密封环与高温热塑性保持器密封环交替间隔开。 保持器密封环和热塑性密封环是具有一般V形形状的径向横截面的圆柱形环。 通过在交替的密封环之间的轴向过盈配合，相对可移动的井筒表面和密封环之间的径向过盈配合以及井筒流体的相互作用来实现将两组密封件压紧以与两个相对可移动的管状构件密封接合的能量 压力。 井筒流体压力推压一般人字形的阴部以向外张开保持器密封环，以与相对可移动的管状构件密封接合。 在更高的井筒温度下，与热塑性密封环彼此交替的保持器密封环保持热塑性密封环的形状，使得当密封组件从较高的井眼温度冷却时，它们将密封地接合相对可移动的构件 降低井筒温度。