中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.02 seconds)

    PACKER HAVING SWELLABLE AND COMPRESSIBLE ELEMENTS
    1.
    发明专利
    PACKER HAVING SWELLABLE AND COMPRESSIBLE ELEMENTS 未知

    公开(公告)号：CA2922886C

    公开(公告)日：2018-02-06

    申请号：CA2922886

    申请日：2014-08-27

    Applicant: WEATHERFORD/LAMB INC

    Inventor： GOODMAN BRANDON C ,  DERBY MICHAEL C ,  PARKER CHARLES D

    IPC: E21B33/128 ,  E21B33/12 ,  E21B33/122 ,  E21B33/124

    Abstract: A packer has a swellable element and has end rings and compressible elements at each end of the swellable element. The packer may be first set using internal bore pressure to compress one of the compressible elements against one of the end rings with a first hydraulic setting mechanism. The packer may then be set a second time using annulus pressure to compress against the other compressible element with a second hydraulic setting mechanism. Either way, the compressible elements are compressed to expand out to the borehole and to limit extrusion of the swellable element outside the compressed elements.

    Double compression set packer
    2.
    发明专利
    Double compression set packer 未知

    公开(公告)号：AU2014240992B2

    公开(公告)日：2017-02-16

    申请号：AU2014240992

    申请日：2014-03-11

    Applicant: WEATHERFORD/LAMB INC

    Inventor： DERBY MICHAEL C ,  GOODMAN BRANDON C

    IPC: E21B33/12

    Abstract: A device and method allow a longer sealing element to be used on a packer or other downhole tool while providing an increase in the total amount of setting force that can be used and providing for more uniform or balanced setting of the sealing element. The packer may be first set using internal bore pressure to radially expand one end of the sealing element with a first hydraulic setting mechanism. The packer may then be set a second time using annulus pressure to continue the radial expansion of the sealing element with a second hydraulic setting mechanism.

    SPLIT FOLDBACK RINGS WITH ANTI-HOOPING BAND
    3.
    发明专利
    SPLIT FOLDBACK RINGS WITH ANTI-HOOPING BAND 未知

    公开(公告)号：CA2905815C

    公开(公告)日：2017-10-24

    申请号：CA2905815

    申请日：2014-03-11

    Applicant: WEATHERFORD/LAMB INC

    Inventor： DERBY MICHAEL C

    IPC: E21B33/12

    Abstract: A device and method prevent damage to an anti-extrusion device on a tool, such as a plug or a packer, prior to and during setting of the tool. Typically, the upper or outer edges of the anti-extrusion device are relatively delicate. A reinforcing band on the device's sheath strengthens or armors the upper or outer edge of the anti-extrusion device so the anti-extrusion device may be protected while running the tool into the well or casing. Longitudinal slots on the sheath allow the sheath to expand at least partially with the expansion of the sealing element, while the reinforcing band resists expansion of the distal edge of the sheath.

    DOUBLE COMPRESSION SET PACKER
    5.
    发明专利
    DOUBLE COMPRESSION SET PACKER 未知

    公开(公告)号：CA2906352C

    公开(公告)日：2017-10-24

    申请号：CA2906352

    申请日：2014-03-11

    Applicant: WEATHERFORD/LAMB INC

    Inventor： DERBY MICHAEL C ,  GOODMAN BRANDON C

    IPC: E21B33/12

    Abstract: A device and method allow a longer sealing element to be used on a packer or other downhole tool while providing an increase in the total amount of setting force that can be used and providing for more uniform or balanced setting of the sealing element. The packer may be first set using internal bore pressure to radially expand one end of the sealing element with a first hydraulic setting mechanism. The packer may then be set a second time using annulus pressure to continue the radial expansion of the sealing element with a second hydraulic setting mechanism.

    Packer having swellable and compressible elements
    6.
    发明专利
    Packer having swellable and compressible elements 未知

    公开(公告)号：AU2014312415B2

    公开(公告)日：2017-06-15

    申请号：AU2014312415

    申请日：2014-08-27

    Applicant: WEATHERFORD/LAMB INC

    Inventor： GOODMAN BRANDON C ,  DERBY MICHAEL C ,  PARKER CHARLES D

    IPC: E21B33/12 ,  E21B33/122 ,  E21B33/124

    Abstract: A packer has a swellable element and has end rings and compressible elements at each end of the swellable element. The packer may be first set using internal bore pressure to compress one of the compressible elements against one of the end rings with a first hydraulic setting mechanism. The packer may then be set a second time using annulus pressure to compress against the other compressible element with a second hydraulic setting mechanism. Either way, the compressible elements are compressed to expand out to the borehole and to limit extrusion of the swellable element outside the compressed elements.

    Split foldback rings with anti-hooping band
    7.
    发明专利
    Split foldback rings with anti-hooping band 未知

    公开(公告)号：AU2014249161B2

    公开(公告)日：2016-06-02

    申请号：AU2014249161

    申请日：2014-03-11

    Applicant: WEATHERFORD/LAMB INC

    Inventor： DERBY MICHAEL C

    IPC: E21B33/12

    Abstract: A device and method prevent damage to an anti-extrusion device on a tool, such as a plug or a packer, prior to and during setting of the tool. Typically, the upper or outer edges of the anti-extrusion device are relatively delicate. A reinforcing band on the device's sheath strengthens or armors the upper or outer edge of the anti-extrusion device so the anti-extrusion device may be protected while running the tool into the well or casing. Longitudinal slots on the sheath allow the sheath to expand at least partially with the expansion of the sealing element, while the reinforcing band resists expansion of the distal edge of the sheath.

    HYDRAULIC SET PACKER WITH PISTON TO ANNULUS COMMUNICATION
    8.
    发明专利
    HYDRAULIC SET PACKER WITH PISTON TO ANNULUS COMMUNICATION 未知

    公开(公告)号：CA2841732C

    公开(公告)日：2018-06-12

    申请号：CA2841732

    申请日：2014-02-06

    Applicant: WEATHERFORD/LAMB INC

    Inventor： DERBY MICHAEL C

    IPC: E21B33/12

    Abstract: A hydraulically set packer has a mandrel with an internal bore and a port communicating the internal bore outside the mandrel. A packing element disposed on the mandrel can be compressed by a piston to engage the borehole. The piston is disposed on the mandrel on a first side of the packing element and moves against the packing element when tubing pressure is communicated into a first piston chamber via the mandrel's port. To increase the setting forces, a sleeve disposed between the packing element and the mandrel defines a space communicating an opposite side of the packing element with a second pressure chamber of the piston. During high pressure operations, high pressure on the first side of the packing element acts with high pressure on the first side of the piston, increasing the pistons movement from a high pressure region to a low pressure region.

Patent Agency Ranking