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    TOOL FOR METAL PLUGGING OR SEALING OF CASING
    1.
    发明申请
    TOOL FOR METAL PLUGGING OR SEALING OF CASING 有权

    公开(公告)号：US20220307343A1

    公开(公告)日：2022-09-29

    申请号：US17834826

    申请日：2022-06-07

    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

    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.

    PRE-POSITIONED CAPPING DEVICE ON HIGH PRESSURE WELLS
    3.
    发明申请
    PRE-POSITIONED CAPPING DEVICE ON HIGH PRESSURE WELLS 审中-公开
    在高压井上预先定位的封盖装置

    公开(公告)号：US20150021038A1

    公开(公告)日：2015-01-22

    申请号：US14325589

    申请日：2014-07-08

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Randall S. SHAFER ,  Gordon T. POSS

    IPC: E21B41/00

    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. The capping device includes at least one blind shear ram and is separate from a blowout preventer. The blowout preventer may operate to control well events up to a certain pressure, above which the capping device is employed since the capping device has a higher pressure rating than the blowout preventer.

    Abstract translation: 系统和方法包含从海底井或表面排出的流体，通过用预定位的封盖装置封盖井口。 封盖装置包括至少一个盲剪杆，并与防喷器分开。 防喷器可以操作以控制高达一定压力的井事件，其上使用封盖装置，因为封盖装置具有比防喷器更高的压力等级。

    P&A SETTING WITH EXOTHERMIC MATERIAL
    5.
    发明申请
    P&A SETTING WITH EXOTHERMIC MATERIAL 审中-公开

    公开(公告)号：US20190186233A1

    公开(公告)日：2019-06-20

    申请号：US16219010

    申请日：2018-12-13

    Applicant: ConocoPhillips Company

    Inventor： Randall S. SHAFER

    IPC: E21B33/134 ,  E21B36/00

    Abstract: A method of plugging a hydrocarbon well includes deploying a downhole tool to remove at least a portion of a casing at a section of well to be plugged. Deploying a blocking device downhole to block a bottom of the section of well to be plugged. Deploying a plugging material downhole onto the blocking device to fill an area to be plugged. Deploying an exothermic fluid downhole, wherein activation of the exothermic material liquefies the plugging material. Allowing the plugging material and the exothermic fluid to solidify form a cast-in-place plug that fills the section of well to be plugged.

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