Patents by Inventor Chris C. Blundell

Chris C. Blundell 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).

  • Pull-through tubing string rotator for an oil well
    Patent number: 6199630
    Abstract: An apparatus for rotating a tubing string within an oil well. The apparatus includes an outer housing having an upper end, a lower end and a generally hollow interior where the lower end may be used to attach the outer housing to the casing bowl of an oil well. The apparatus further includes a drive assembly and a tubing string hanger generally disposed within the interior of the outer housing. The drive assembly has a generally hollow rotating gear mandrel and a drive gear. The tubing string hanger has a lower end for attaching to and supporting a tubing string. The tubing string hanger engages the rotating gear mandrel such that rotation of the rotating gear mandrel causes rotation of the tubing string hanger. The tubing string hanger, and a tubing string attached thereto, may be withdrawn from the oil well and through the outer housing without withdrawal of the rotating gear mandrel or the drive gear.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: March 13, 2001
    Assignee: Alberta Basic Industries, Ltd.
    Inventors: Chris C. Blundell, Andrew J. Wright, Curtis P. Ring