EXTENDABLE CUTTING TOOLS FOR USE IN A WELLBORE

    公开(公告)号:CA2742767A1

    公开(公告)日:2010-05-14

    申请号:CA2742767

    申请日:2009-11-10

    Abstract: Embodiments of the present invention generally relate to extendable cutting tools for use in a wellbore. In one embodiment, a tool for use in a wellbore includes a tubular body having a bore therethrough, an opening through a wall thereof, and a connector at each longitudinal end thereof; and an arm. The arm is pivotally connected to a first piston and rotationally coupled to the body, is disposed in the opening in a retracted position, and is movable to an extended position where an outer surface of the arm extends outward past an outer surface of the body. The tool further includes the first piston. The first piston is disposed in the body bore, has a bore therethrough, and is operable to move the arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening. The tool further includes a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock.

    Methods and apparatus for drilling with casing

    公开(公告)号:GB2438508A

    公开(公告)日:2007-11-28

    申请号:GB0709806

    申请日:2007-05-22

    Abstract: Forming a wellbore including running a liner drilling assembly 100 into the wellbore, the liner drilling assembly 100 having a liner 120, a conveying member, one or more connection members 116, and a drilling member 180. Including temporarily suspending the liner 120 at a location below the rig floor; releasing the conveying member and the drilling member 180 from the liner 120; reconnecting the conveying member to the liner; releasing the liner 120 from its location of temporary suspension; and advancing the liner drilling assembly 100.

    METHODS AND APPARATUS FOR DRILLING WITH CASING

    公开(公告)号:CA2589600A1

    公开(公告)日:2007-11-22

    申请号:CA2589600

    申请日:2007-05-22

    Abstract: In one embodiment, a method of forming a wellbore includes running a liner drilling assembly into the wellbore, the liner drilling assembly having a liner, a conveying member, one or more connection members, and a drilling member. The method includes temporarily suspending the liner at a location below the rig floor; releasing the conveying member and the drilling member from the liner; re-- connecting the conveying member to the liner; releasing the liner from its location of temporary suspension; and advancing the liner drilling assembly.

    TACHOMETER FOR DOWNHOLE DRILLING MOTOR

    公开(公告)号:CA2875794C

    公开(公告)日:2017-10-24

    申请号:CA2875794

    申请日:2013-06-07

    Abstract: A tachometer for a downhole motor includes: a tubular housing having a coupling for connection to a housing of the motor; and a probe. The probe: has a coupling for connection to a rotor of the motor, is movable relative to the tachometer housing, and has at least a portion disposed in a bore of the tachometer housing. The tachometer further includes electronics disposed in the tachometer housing and including: a battery; one or more proximity sensors for tracking an orbit of the probe; and a programmable logic controller (PLC). The PLC is operable: to receive the tracked orbit, and at least one of: to determine an angular speed of the probe using the tracked orbit, and to forecast a remaining lifespan of the motor using the tracked orbit.

    EXTENDABLE CUTTING TOOLS FOR USE IN A WELLBORE

    公开(公告)号:CA2742767C

    公开(公告)日:2014-05-27

    申请号:CA2742767

    申请日:2009-11-10

    Abstract: Embodiments of the present invention generally relate to extendable cutting tools for use in a wellbore. In one embodiment, a tool for use in a wellbore includes a tubular body having a bore therethrough, an opening through a wall thereof, and a connector at each longitudinal end thereof; and an arm. The arm is pivotally connected to a first piston and rotationally coupled to the body, is disposed in the opening in a retracted position, and is movable to an extended position where an outer surface of the arm extends outward past an outer surface of the body. The tool further includes the first piston. The first piston is disposed in the body bore, has a bore therethrough, and is operable to move the arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening. The tool further includes a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock.

    TACHOMETER FOR DOWNHOLE DRILLING MOTOR

    公开(公告)号:CA2875794A1

    公开(公告)日:2013-12-12

    申请号:CA2875794

    申请日:2013-06-07

    Abstract: A tachometer for a downhole motor includes: a tubular housing having a coupling for connection to a housing of the motor; and a probe. The probe: has a coupling for connection to a rotor of the motor, is movable relative to the tachometer housing, and has at least a portion disposed in a bore of the tachometer housing. The tachometer further includes electronics disposed in the tachometer housing and including: a battery; one or more proximity sensors for tracking an orbit of the probe; and a programmable logic controller (PLC). The PLC is operable: to receive the tracked orbit, and at least one of: to determine an angular speed of the probe using the tracked orbit, and to forecast a remaining lifespan of the motor using the tracked orbit.

    SUBSEA DRILLING WITH CASING
    40.
    发明专利

    公开(公告)号:CA2873799A1

    公开(公告)日:2010-05-20

    申请号:CA2873799

    申请日:2009-11-17

    Abstract: A method of forming a wellbore includes providing a drilling assembly comprising one or more lengths of casing and an axially retracting assembly having a first tubular; a second tubular at least partially disposed in the first tubular and axially fixed thereto; and a support member disposed in the second tubular and movable from a first axial position to a second axial position relative to the second tubular, wherein, in the first axial position, the support member maintains the second tubular axially fixed to the first tubular, and in the second axial position, allows the second tubular to move relative to the first tubular; and an earth removal member disposed below the axially retracting assembly. The method also includes rotating the earth removal member to form the wellbore; moving the support member to the second axial position; and reducing a length of the axially retracting assembly.

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