Metal seal for liner drilling
    2.
    发明授权

    公开(公告)号:US11365611B2

    公开(公告)日:2022-06-21

    申请号:US15952805

    申请日:2018-04-13

    Inventor: John Gibb

    Abstract: Systems and methods of forming a seal employ a robust metal sealing unit for tubulars used in rotary drilling. Specifically, eutectic alloy is used to seal a tubular to a wellbore after drilling. A downhole heater melts the alloy, allowing the alloy to expand and drain before it cools and solidifies between the wellbore and tubular, forming a gas tight seal.

    System and method for sealing multilateral junctions

    公开(公告)号:US10385654B2

    公开(公告)日:2019-08-20

    申请号:US15933819

    申请日:2018-03-23

    Inventor: John Gibb

    Abstract: A system and method for sealing a multilateral junction in an oil well is described. Molten material, such as a eutectic or non-eutectic alloy, flows into the junction area and forms a durable seal upon cooling. An expanding alloy may be utilized, which expands upon solidification and which has a melting temperature that is higher than the maximum anticipated well temperature. The alloy is placed within a cavity in the well and held at a temperature above the melting point of the alloy, after which the alloy is cooled down to the ambient well temperature and solidifies and expands within the cavity.

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