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    • 5. 发明授权
    • Well cover plate arrangement and method of use
    • 井盖布置和使用方法
    • US07571764B1
    • 2009-08-11
    • US12104884
    • 2008-04-17
    • Jess Sammann
    • Jess Sammann
    • E21B19/00
    • E21B19/10
    • A well cover arrangement is shown for covering the exposed opening of a well where the well has a submersible pump supported on a collared well string which is suspended downwardly in the well. The cover arrangement includes both a U-plate with a U-shaped opening therein and a door element which fits within the U-plate opening. Once the door element is properly positioned on the U-plate, cooperating locking elements maintain its proper position. The ultimate weight of the well tubing string further secures the door element as the collar in the well string contacts a portion of the door element, making removal of the door element only possible by first lifting the well string.
    • 示出了井盖布置,用于覆盖井的露出开口,其中井具有支撑在井下垂下的井井井柱的潜水泵。 盖装置包括其中具有U形开口的U形板和装配在U形板开口内的门元件。 一旦门元件正确地定位在U形板上,配合的锁定元件将保持其正确的位置。 井管柱的最终重量进一步固定门元件,因为井串中的套环接触门元件的一部分,仅通过首先提升井串可以移除门元件。