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    SINGLE TRIP ANNULAR SEAL REPAIR METHOD AND ASSOCIATED EQUIPMENT
    1.
    发明公开
    SINGLE TRIP ANNULAR SEAL REPAIR METHOD AND ASSOCIATED EQUIPMENT 审中-公开

    公开(公告)号：US20230417121A1

    公开(公告)日：2023-12-28

    申请号：US18038204

    申请日：2021-11-22

    申请人： BISN Tec Ltd.

    发明人： Paul Carragher ,  Jake Dearmon ,  Didhiti Talapatra

    IPC分类号： E21B33/13 ,  E21B36/00 ,  E21B31/08

    CPC分类号： E21B33/13 ,  E21B36/008 ,  E21B31/08

    摘要： A single trip method of repairing a leaking annular seal located within an annulus that encircles an oil/as wellbore tubular body, examples of such seals including annular packers or cement seals. The method comprises providing deflector within a wellbore tubular body adjacent to one or more openings in the wall of the tubular body. Alloy beads are then deployed downhole via the tubular body so that the alloy beads are deflected via said openings into the annulus where they accumulate on top of the annular seal. The alloy is then heated to form an alloy plug above the annular seal. The present invention also provides an annular seal repair tool assembly for use in the repair method of the present invention.

    DOWNHOLE HEATING TOOLS WITH INCREASED HEATING CAPACITY AND ASSOCIATED TOOLS AND METHODS
    3.
    发明公开
    DOWNHOLE HEATING TOOLS WITH INCREASED HEATING CAPACITY AND ASSOCIATED TOOLS AND METHODS 审中-公开

    公开(公告)号：US20230265741A1

    公开(公告)日：2023-08-24

    申请号：US18112386

    申请日：2023-02-21

    申请人： BiSN Tec Ltd.

    发明人： Didhiti Talapatra ,  Billy Clark ,  Bryon Mullen ,  Paul Carragher ,  Bobby Chancellor

    IPC分类号： E21B36/00 ,  E21B33/138 ,  C22C28/00

    CPC分类号： E21B36/008 ,  E21B33/138 ,  C22C28/00

    摘要： The present invention provides a downhole heating tool with an increased heating capacity for use in setting alloy plugs/seal in downhole target regions of wellbores, such as oil/gas wells. The increased heating capacity enables greater quantities of alloy to be melted in one operation. It also enables alloys with higher melting points to be melted in the downhole environment. To this end the heating tool comprises a plurality of discrete tubular heating units linked together by connection means that permit the movement of the tubular heating units relative to one another. The relative freedom of movement between the heating units facilitates a transition between a deployment configuration, in which the heating tool is optimised for deployment downhole, and a heating configuration, in which the heating tool adopts an expanded heating footprint within a downhole target region.

    MULTI-TRIP ANNULAR SEAL REPAIR METHOD AND ASSOCIATED EQUIPMENT
    4.
    发明公开
    MULTI-TRIP ANNULAR SEAL REPAIR METHOD AND ASSOCIATED EQUIPMENT 审中-公开

    公开(公告)号：US20240003221A1

    公开(公告)日：2024-01-04

    申请号：US18038205

    申请日：2021-11-22

    申请人： BISN Tec. Ltd.

    发明人： Paul Carrager ,  Jake Dearmon ,  Didhiti Talapatra

    IPC分类号： E21B33/134 ,  E21B33/14

    CPC分类号： E21B33/134 ,  E21B33/14

    摘要： A multi-trip method of repairing a leaking annular seal located within an annulus that encircles an oil/gas wellbore tubular body, examples of such seals including annular packers or cement seals. The method comprises providing deflector within a wellbore tubular body adjacent to one or more openings in the wall of the tubular body. Alloy beads are then deployed downhole via the tubular body so that the alloy beads are deflected via said openings into the annulus where they accumulate on top of the annular seal. A heating tool is then operated to heat the alloy within the annulus to form an alloy plug above the annular seal. The present invention also provides various pieces of downhole equipment for use in the repair method of the invention.