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    Tool for metal plugging or sealing of casing
    1.
    发明授权
    Tool for metal plugging or sealing of casing 有权

    公开(公告)号：US11441384B2

    公开(公告)日：2022-09-13

    申请号：US16999802

    申请日：2020-08-21

    Applicant: ConocoPhillips Company

    Inventor： David D. Hearn ,  Casey Hirschmann ,  Randall S. Shafer ,  Stewart M. Robertson ,  Dan Mueller

    IPC: E21B33/13 ,  E21B29/10 ,  E21B29/02 ,  H01L25/065 ,  H01L25/00 ,  H01L27/11556 ,  H01L27/11565 ,  H01L27/1157 ,  H01L27/11573 ,  H01L27/11582 ,  E21B33/12 ,  E21B36/00 ,  H01L23/00

    Abstract: This disclosure describes a device and method of sealing perforations on a well casing inside a subterranean well. The device comprises a generally cylindrical sleeve having an open top and a closed bottom; a heater located inside the sleeve, the heater comprising a thermite mixture; an ignition mechanism that ignites the thermite mixture upon actuation; and a string connected to the heater ignition and detachably engages the sleeve. The method comprises lowering a body of meltable plugging material into the well casing near the perforations; lowering the plugging device into the well casing immediately on top of the body of meltable plugging material; melting the meltable plugging material by igniting the thermite thereby transferring heat to the body of meltable plugging material; forcing the molten plugging material into the perforations by pushing the plugging tool further downhole; cooling the plugging tool and the plugging material until the plugging material solidifies; disengaging the tubing string from the sleeve and retrieving the tubing string with the heater; and removing the sleeve and bismuth remaining in the well casing, but not in the perforations.

    Tool for metal plugging or sealing of casing
    2.
    发明授权
    Tool for metal plugging or sealing of casing 有权

    公开(公告)号：US10760374B2

    公开(公告)日：2020-09-01

    申请号：US15706071

    申请日：2017-09-15

    Applicant: ConocoPhillips Company

    Inventor： David D. Hearn ,  Casey Hirschmann ,  Randall S. Shafer ,  Stewart M. Robertson ,  Dan Mueller

    IPC: E21B33/13 ,  E21B29/10 ,  E21B29/02 ,  E21B33/12 ,  E21B36/00

    Abstract: This disclosure describes a device and method of sealing perforations on a well casing inside a subterranean well. The device comprises a generally cylindrical sleeve having a open top and a closed bottom; a heater located inside the sleeve, the heater comprising a thermite mixture; an ignition mechanism that ignites the thermite mixture upon actuation; and a string connected to the heater ignition and detachably engages the sleeve. The method comprises lowering a body of meltable plugging material into the well casing near the perforations; lowering the plugging device into the well casing immediately on top of the body of meltable plugging material; melting the meltable plugging material by igniting the thermite thereby transferring heat to the body of meltable plugging material; forcing the molten plugging material into the perforations by pushing the plugging tool further downhole; cooling the plugging tool and the plugging material until the plugging material solidifies; disengaging the tubing string from the sleeve and retrieving the tubing string with the heater; and removing the sleeve and bismuth remaining in the well casing, but not in the perforations.

    Pre-positioned capping device and diverter
    3.
    发明授权
    Pre-positioned capping device and diverter 有权
    预先定位的封盖装置和分流器

    公开(公告)号：US09347270B2

    公开(公告)日：2016-05-24

    申请号：US14312891

    申请日：2014-06-24

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Randall S. Shafer ,  Graham Alvord ,  Rune Woie

    IPC: E21B33/064 ,  E21B33/076 ,  E21B34/04 ,  E21B43/01 ,  E21B33/00 ,  E21B7/12

    CPC classification number: E21B7/12 ,  E21B33/064 ,  E21B43/0122

    Abstract: Systems and methods contain fluids discharged from a subsea well or at the surface by capping the well blowout with a pre-positioned capping device and diverting flow of hydrocarbons to a secondary location for disposal/handling in situations where casing integrity is compromised preventing ability to close in the flow of the hydrocarbons. The capping device includes at least one blind shear ram and is separate from a blowout preventer. Different personnel offsite of a rig drilling the well may have access and control to operate the device.

    Abstract translation: 系统和方法包含从海底井或表面排出的流体，通过用预先定位的封盖装置封闭井筒喷射并将烃流转向第二位置以便在套管完整性受损的情况下进行处理/处理，防止封闭能力 在烃的流动。 封盖装置包括至少一个盲剪杆，并与防喷器分开。 钻井的钻井人员的不同人员可能会进入和控制操作装置。

    TWO-MATERIAL P&A PLUG
    7.
    发明申请
    TWO-MATERIAL P&A PLUG 审中-公开

    公开(公告)号：US20190271209A1

    公开(公告)日：2019-09-05

    申请号：US16386198

    申请日：2019-04-16

    Applicant: ConocoPhillips Company

    Inventor： Randall S. Shafer

    IPC: E21B33/12 ,  E21B33/13 ,  C09K8/42 ,  C09K8/44

    Abstract: A plug for Plug and Abandonment (P&A) operations and methods of installation and use are described. The plug is a two-part plug of bismuth-based alloy and resin, allowing for sealing of an oil well using two different mechanisms with a shorter plug.

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