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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.

    TOOL FOR METAL PLUGGING OR SEALING OF CASING
    5.
    发明申请
    TOOL FOR METAL PLUGGING OR SEALING OF CASING 审中-公开

    公开(公告)号：US20200381403A1

    公开(公告)日：2020-12-03

    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: H01L25/065 ,  H01L25/00 ,  H01L23/00 ,  H01L27/11519 ,  H01L27/11556 ,  H01L27/11565 ,  H01L27/1157 ,  H01L27/11573 ,  H01L27/11575 ,  H01L27/11582

    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.

    Nano-thermite Well Plug
    7.
    发明申请
    Nano-thermite Well Plug 有权

    公开(公告)号：US20210087904A1

    公开(公告)日：2021-03-25

    申请号：US17075897

    申请日：2020-10-21

    Applicant: ConocoPhillips Company

    Inventor： David D. HEARN ,  Casey HIRSCHMANN ,  Randall S. SHAFER

    IPC: E21B33/13

    Abstract: A composition and methods for setting a plug for well bores undergoing plugging and abandonment operations is described. Methods of setting the plug are also described include placing a blocking device below the plug location and creating a void space above the blocking device; placing a heat resistant base plate above the blocking device and introducing nano-thermite clusters and expandable bismuth alloy pellets into the void space; igniting the thermite and cooling the melted alloy to form a permanent plug in the void space.

    REDUCED FLOW MILLING
    8.
    发明申请
    REDUCED FLOW MILLING 审中-公开
    减少流动铣

    公开(公告)号：US20160090804A1

    公开(公告)日：2016-03-31

    申请号：US14871017

    申请日：2015-09-30

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Scott A. GRUBB ,  Jason M. SKUFCA ,  David D. HEARN

    IPC: E21B29/00 ,  E21B17/042 ,  E21B10/61

    CPC classification number: E21B29/12 ,  E21B21/103

    Abstract: Methods and apparatus to reduce flow in front of the drill bit while milling improve milling debris size. Reducing flow on the drill bit face while milling allows the drill cuttings to remain at the drilling surface longer and reduce the size of the cuttings. The smaller cuttings increase the ease and speed of cutting removal.

    Abstract translation: 减少钻头前端流动的方法和装置，同时研磨提高了碎屑的尺寸。 铣削时减少钻头面上的流量使得钻屑能够更长时间地保持在钻孔表面，并减小切屑的尺寸。 较小的切屑增加了切割移除的容易性和速度。

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