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    • 7. 发明授权
    • Bottom plug for forming a mono diameter wellbore casing
    • 用于形成单孔井筒的底塞
    • US07513313B2
    • 2009-04-07
    • US10528497
    • 2003-09-22
    • Brock Wayne WatsonDavid Paul Brisco
    • Brock Wayne WatsonDavid Paul Brisco
    • E21B43/10E21B33/12
    • E21B43/105E21B43/103
    • A bottom plug and a method of using a bottom plug for forming a mono diameter wellbore casing is provided that includes an expandable packer initially attached below an expansion device. A packer setting mechanism is coupled between the expansion device and the expandable packer for expanding the expandable packer and sealingly setting it in an expanded portion of the wellbore casing. A release mechanism is coupled between the expansion device and the expandable bottom packer for releasing expandable bottom packer from the expansion device. Fluid is pumped into the wellbore casing between the cone and the set expandable bottom packer to facilitate forcing the expansion device into and through an unexpanded portion of the wellbore casing, thereby expanding the casing.
    • 提供一种底塞和使用底塞形成单口井筒套的方法,其包括最初附接在膨胀装置下方的可膨胀封隔器。 封隔器设置机构联接在膨胀装置和可膨胀封隔器之间,用于膨胀可膨胀封隔器并将其密封地设置在井筒壳体的膨胀部分中。 释放机构联接在膨胀装置和可膨胀底部封隔器之间,用于从膨胀装置释放可膨胀底部封隔器。 流体被泵送到锥体和集成的可膨胀底部封隔器之间的井筒壳体中,以便于膨胀装置进入并穿过井筒壳体的未膨胀部分,从而膨胀套管。