EXPANDABLE TUBULARS TO ISOLATE PRODUCTION CASING

    公开(公告)号:US20230349269A1

    公开(公告)日:2023-11-02

    申请号:US17730975

    申请日:2022-04-27

    IPC分类号: E21B43/12 E21B33/10

    CPC分类号: E21B43/123 E21B33/10

    摘要: A production well has nested casings including a first production casing and a first production tubing installed within the first production casing, which extends from a surface to a depth within the wellbore. Before implementing a gas-lift operation in the production well, the first production tubing is removed. A second production casing is lowered within the first production casing. The second production casing has a smaller outer diameter than an inner diameter of the first production casing. From the surface of the wellbore to the depth within the wellbore to which the second production casing extends, the inner diameter of the second production casing is expanded until an outer wall of the second production casing forms a gas-tight seal with an inner wall of the first production casing.

    Expandable tubulars to isolate production casing

    公开(公告)号:US12000247B2

    公开(公告)日:2024-06-04

    申请号:US17730975

    申请日:2022-04-27

    IPC分类号: E21B43/10 E21B33/10 E21B43/12

    摘要: A production well has nested casings including a first production casing and a first production tubing installed within the first production casing, which extends from a surface to a depth within the wellbore. Before implementing a gas-lift operation in the production well, the first production tubing is removed. A second production casing is lowered within the first production casing. The second production casing has a smaller outer diameter than an inner diameter of the first production casing. From the surface of the wellbore to the depth within the wellbore to which the second production casing extends, the inner diameter of the second production casing is expanded until an outer wall of the second production casing forms a gas-tight seal with an inner wall of the first production casing.