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    Deep water drilling with casing
    91.
    发明专利
    Deep water drilling with casing 未知

    公开(公告)号：GB2424432B

    公开(公告)日：2010-03-17

    申请号：GB0604044

    申请日：2006-02-28

    Applicant: WEATHERFORD LAMB

    Inventor： GIROUX RICHARD LEE ,  REID DOUG ,  ODELL ALBERT C II ,  GALLOWAY GREGORY GUY ,  MURRAY MARK J

    IPC: E21B7/20

    Abstract: Methods and apparatus are provided to place a conductor pipe and a casing in a subsea environment. In one embodiment, a conductor pipe is jetted or drilled into the subsea floor. Thereafter, a casing drilling assembly comprising a drill casing and a drilling assembly is connected to the drill pipe using a crossover. The drilling assembly urged into the seafloor until a casing latch on the drilling assembly is engaged with a casing profile of the conductor pipe. During drilling, instrumentation in the drilling assembly may be used to measure geophysical data. The measured data may be used to optimize the drilling process. After the drill casing is engaged with the conductor pipe, cementing may be performed to set the drill casing.

    MECHANICAL EXPANSION SYSTEM
    92.
    发明专利
    MECHANICAL EXPANSION SYSTEM 未知

    公开(公告)号：CA2645803A1

    公开(公告)日：2009-06-17

    申请号：CA2645803

    申请日：2008-12-05

    Applicant: WEATHERFORD LAMB

    Inventor： GIROUX RICHARD LEE

    IPC: E21B43/10 ,  E21B29/00

    Abstract: Methods and apparatus enable expanding a tubular in a wellbore. The method and apparatus include running a bottom hole assembly (BHA) into a wellbore. The BHA is anchored to the wellbore and a portion of the BHA is released from th e anchor. An expansion member is then pulled by a work string through the tubular thereby engaging the tubular with the wellbore. The work string is reconnected to th e anchor and used to release the anchor. The BHA is then removed from the wellbore.

    APPARATUS AND METHODS FOR CREATION OF DOWN HOLE ANNULAR BARRIER
    93.
    发明专利
    APPARATUS AND METHODS FOR CREATION OF DOWN HOLE ANNULAR BARRIER 未知

    公开(公告)号：CA2555563C

    公开(公告)日：2009-03-31

    申请号：CA2555563

    申请日：2006-08-04

    Applicant: WEATHERFORD LAMB

    Inventor： GIROUX RICHARD LEE ,  RING LEV

    IPC: E21B33/13 ,  E21B33/16

    Abstract: Methods and apparatus are provided for performing an expedited shoe tes t using an expandable casing portion as an annular fluid barrier. Further provided are methods and apparatus for successfully recovering from a failed expansion so that a shoe test can be completed without replacement of the expandable casing portion. In one recovery method, a selectively actuatable fluid circulation tool is provided to further expand the expandable portion or perform a cementing operation. Additionally, methods and apparatus are provided to drill a wellbore and form an annular fluid barrier in a single trip.

    DIFFERENTIAL FLOW CONTROL VALVE
    97.
    发明专利
    DIFFERENTIAL FLOW CONTROL VALVE 未知

    公开(公告)号：CA2406249C

    公开(公告)日：2005-09-13

    申请号：CA2406249

    申请日：2001-04-12

    Applicant: WEATHERFORD LAMB

    Inventor： GIROUX RICHARD LEE

    IPC: E21B34/06

    Abstract: A downhole differential flow control valve (50) is provided that utilizes a differential pressure area having one pressure area on which the wellbore pressure (Pw) acts and a second area different from the first area on which pressure (Pt) in the tubing acts. The differential area reduces the load in which a spring (66) is required to exert a closing force in the valve. Thus, a coil spring can be used to improve the closing speeds of the valve.

    98.
    发明专利
    未知

    公开(公告)号：NO20024410L

    公开(公告)日：2002-11-20

    申请号：NO20024410

    申请日：2002-09-16

    Applicant: WEATHERFORD LAMB

    Inventor： GIROUX RICHARD LEE

    IPC: E21B34/06 ,  E21B34/08

    Abstract: A downhole differential flow control valve is provided that utilizes a differential pressure area having one pressure area on which the wellbore pressure acts and a second area different from the first area on which pressure in the tubing acts. The differential area reduces the load in which the spring is required to exert a closing force in the valve. Thus, a coil spring can be used to improve the closing speeds of the valve.

    99.
    发明专利
    未知

    公开(公告)号：NO20024090L

    公开(公告)日：2002-10-30

    申请号：NO20024090

    申请日：2002-08-28

    Applicant: WEATHERFORD LAMB

    Inventor： GIROUX RICHARD LEE ,  LUKE MIKE ,  HOFFMAN COREY E ,  NORRIS STEVEN J

    IPC: E21B23/04 ,  E21B27/00 ,  E21B37/08 ,  E21B43/12 ,  E21B

    Abstract: The present invention provides a simple debris removal apparatus (200) for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi (210) is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container (225). In another aspect of the invention, a venturi is utilised to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilising the apparatus in a wellbore on coiled tubing.

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