Patents by Inventor Anna L. Halbardier

Anna L. Halbardier has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4869325
    Abstract: Methods and apparatus are provided for retrieving an inflatable packer or bridge plug of a type which may be passed through a small diameter tubing, seal against a relatively large diameter casing by passing fluid to the packer through a remedial tubing to inflate an elastomeric packing element and then be retrieved to the surface through the small diameter tubing by deflating the elastomeric packing element.Circulation may be maintained during run-in through an open port in a centralizer member provided on the bottom of the packer or bridge plug. If the device is used as a bridge plug, the open port is closed by dropping a ball and applying pressure through the tubing to permanently close the open port preliminary to inflating the elastomeric elements.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: September 26, 1989
    Assignee: Baker Hughes Incorporated
    Inventor: Anna L. Halbardier
  • Patent number: 4805699
    Abstract: Methods and apparatus are provided for retrieving an inflatable packer or bridge plug of a type which may be passed through a small diameter tubing, seal against a relatively large diameter casing by passing fluid to the packer through a remedial tubing to inflate an elastomeric packing element and then be retrieved to the surface through the small diameter tubing by deflating the elastomeric packing element. Circulation may be maintained during run-in through an open port in a centralizer member provided on the bottom of the packer or bridge plug. If the device is used as a bridge plug, the open port is closed by dropping a ball and applying pressure through the tubing to permanently close the open port preliminary to inflating the elastomeric elements.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: February 21, 1989
    Assignee: Baker Hughes Incorporated
    Inventor: Anna L. Halbardier