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    DISINTEGRABLE DOWNHOLE TOOLS AND METHOD OF USE
    5.
    发明公开
    DISINTEGRABLE DOWNHOLE TOOLS AND METHOD OF USE 审中-公开

    公开(公告)号：US20230304370A1

    公开(公告)日：2023-09-28

    申请号：US17669908

    申请日：2022-02-11

    申请人： Zhihui Zhang ,  Emerson Nunez

    发明人： Zhihui Zhang ,  Emerson Nunez

    IPC分类号： E21B29/02 ,  C08G59/24 ,  C08J5/04 ,  C08J11/12

    CPC分类号： E21B29/02 ,  C08G59/245 ,  C08J5/04 ,  C08J11/12 ,  E21B34/063

    摘要： A downhole assembly includes a disintegrable article, which contains a polymer matrix comprising a polymer having an oxygen content of about 2 wt% to about 30 wt%; an energetic material configured to generate heat upon activation to facilitate a chemical decomposition of the polymer; and at least one of a reinforcing fiber or a filler. The disintegrable article is disintegrated by disposing the downhole assembly in a downhole environment; performing a downhole operation; exposing the polymer in the polymer matrix to the generated heat to chemically decompose the polymer producing a decomposed product containing a small molecule in a supercritical state; and disintegrating the disintegrable article with the small molecule in the supercritical state.

    LINER/CASING BUOYANCY ARRANGEMENT, METHOD AND SYSTEM
    6.
    发明公开
    LINER/CASING BUOYANCY ARRANGEMENT, METHOD AND SYSTEM 审中-公开

    公开(公告)号：US20230203894A1

    公开(公告)日：2023-06-29

    申请号：US17563541

    申请日：2021-12-28

    申请人： YingQing Xu ,  Zhiyue Xu ,  Zhihui Zhang

    发明人： YingQing Xu ,  Zhiyue Xu ,  Zhihui Zhang

    IPC分类号： E21B17/10 ,  E21B33/124

    CPC分类号： E21B17/1078 ,  E21B33/124 ,  E21B2200/08

    摘要： A casing/liner string buoyancy arrangement including a casing/liner string, and a material defining a volume disposed within the string, the material excluding downhole fluids from the volume, the volume being of a lower specific gravity than the same downhole fluids. A method for managing buoyancy of a casing/liner string including configuring a casing/liner string, running the string, and selectively maintaining or degrading the material to adjust buoyancy of the string. A borehole system including a borehole in a subsurface formation, and an arrangement disposed in the borehole.

    ANCHOR FOR TOOL, METHOD FOR MANAGING A BOREHOLE, AND SYSTEM
    7.
    发明公开
    ANCHOR FOR TOOL, METHOD FOR MANAGING A BOREHOLE, AND SYSTEM 审中-公开

    公开(公告)号：US20230160272A1

    公开(公告)日：2023-05-25

    申请号：US17532061

    申请日：2021-11-22

    申请人： Yuh Loh ,  Zhihui Zhang ,  John Puh

    发明人： Yuh Loh ,  Zhihui Zhang ,  John Puh

    IPC分类号： E21B23/01

    CPC分类号： E21B23/01

    摘要： A downhole tool including a body having a function relevant to a selected environment, an electroactive polymer (EAP) anchor disposed with the body and configured to expand, upon application of an electric signal to the EAP, into loaded contact with a tubular member in which the downhole tool is to be set during use. A method for managing a borehole including running a tool to a selected depth in the borehole, applying an electric signal to the EAP, and anchoring the tool with the EAP. A borehole system including a borehole in a subsurface formation, a string in the borehole, a tool disposed within or as a part of the string.