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    63.
    发明专利
    未知

    公开(公告)号：NO20050760L

    公开(公告)日：2005-03-16

    申请号：NO20050760

    申请日：2005-02-11

    Applicant: BAKER HUGHES INC

    Inventor： RICHARD BENNETT M

    IPC: E21B43/08 ,  E21B43/10

    Abstract: A screen (14) that conforms to the borehole shape after expansion is disclosed. The screen (14) comprises a compliant outer layer (16) that takes the borehole shape on expansion. The outer layer (16) is formed having holes (18) to permit production flow. The material that is selected for the outer layer (16) preferably swells with prolonged contact to well fluids to further close off annular gaps after expansion. In an alternative embodiment, the screen (14) is not expanded and the swelling of the material alone closes off annular gaps. The compliant outer layer (16) is placed over the screen (14) and the screen is placed on a base pipe (12) and initially expanded from within the base pipe to secure the components of the screen assembly (10) for running downhole, while minimizing or eliminating any welding among the layers. A variety of expansion tools can be used to expand the screen or screens downhole.

    SELF-CONFORMING WELL SCREEN
    66.
    发明专利
    SELF-CONFORMING WELL SCREEN 未知

    公开(公告)号：AU2003261315A1

    公开(公告)日：2004-03-11

    申请号：AU2003261315

    申请日：2003-07-31

    Applicant: BAKER HUGHES INC

    Inventor： RICHARD BENNETT M

    IPC: E21B43/08 ,  E21B43/10

    Abstract: A screen (14) that conforms to the borehole shape after expansion is disclosed. The screen (14) comprises a compliant outer layer (16) that takes the borehole shape on expansion. The outer layer (16) is formed having holes (18) to permit production flow. The material that is selected for the outer layer (16) preferably swells with prolonged contact to well fluids to further close off annular gaps after expansion. In an alternative embodiment, the screen (14) is not expanded and the swelling of the material alone closes off annular gaps. The compliant outer layer (16) is placed over the screen (14) and the screen is placed on a base pipe (12) and initially expanded from within the base pipe to secure the components of the screen assembly (10) for running downhole, while minimizing or eliminating any welding among the layers. A variety of expansion tools can be used to expand the screen or screens downhole.

    Coiled tubing screen
    67.
    发明专利
    Coiled tubing screen 未知

    公开(公告)号：AU2373399A

    公开(公告)日：1999-10-21

    申请号：AU2373399

    申请日：1999-04-14

    Applicant: BAKER HUGHES INC

    Inventor： VOLL BEN A ,  RICHARD BENNETT M

    IPC: E21B43/08 ,  E21B43/10

    Abstract: The present invention allows a well to be produced through a screen without the need for a gravel pack. This is accomplished by the placement of an expandable screen that can move radially outwardly when placed at the desired location against the wellbore and be porous enough with sufficient open area to allow production from the formation. The screen is placed in the desired location by using coiled tubing which can be preperforated for a support for the screen. The screen is protected during delivery to the desired location in the wellbore by providing a disposable or removable outer cover which can be disposed of after proper location on the screen in the wellbore.

    69.
    发明专利
    未知

    公开(公告)号：NO974620D0

    公开(公告)日：1997-10-06

    申请号：NO974620

    申请日：1997-10-06

    Applicant: BAKER HUGHES INC

    Inventor： RICHARD BENNETT M ,  VOLL BENN ARILD

    IPC: B01D29/15 ,  B01D39/12 ,  B01D46/24 ,  E21B43/08

    Abstract: A filter is provided which combines a woven wire mesh over a supporting body. The supporting body is typically a metal perforated tube which provides fluid communication between the well bore and the production equipment string. The woven wire mesh acts as a filter to prevent the influx of sand particles, provides openings oriented at various angles relative to its surface, so that some area is available for fluid entry even when particulate matter is lodged on the surface above an opening, provides interior channels that allow fluid to travel from one location on the mesh surface to another location over an opening into the supporting body, and does not provide "straight-through" openings, thus forcing the fluid to make multiple turns to pass through the mesh, thereby dissipating the fluid's energy and increases the mesh's erosion resistance. When particulate matter accumulates on the mesh's surface, the resulting particle cake remains porous, heightening the filter's resistance to plugging.

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