Patents by Inventor Robert D. Harrison, Jr.

Robert D. Harrison, Jr. 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: 5146994
    Abstract: A packing assembly which is connectable to reeled tubing and which can be inserted in and pushed through a wellbore tube by the reeled tubing. The packing assembly is hydraulically set in a locking and sealing position in the wellbore by fluid introduced from the reeled tubing and, after use, is hydraulically released and removed from the wellbore. An actuating apparatus is provided for hydraulically actuating the packing assembly and can be converted in a manner to pull the packing assembly from the wellbore. Prior to the removal of the packing assembly from the wellbore, the wellbore fluid pressure is equalized across the packing assembly.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: September 15, 1992
    Assignees: Otis Engineering Corporation, Shell Western E&P, Inc.
    Inventors: Charles W. Pleasants, Pat M. White, Ronald J. Fischer, Robert D. Harrison, Jr., John R. Setterberg, Jr.
  • Patent number: 5000265
    Abstract: A packing assembly which is connectable to reeled tubing and which can be inserted in and pushed through a wellbore tube by the reeled tubing. The packing assembly is hydraulically set in a locking and sealing position in the wellbore by fluid introduced from the reeled tubing and, after use, is hydraulically released and removed from the wellbore. An actuating apparatus is provided for hydraulically actuating the packing assembly and can be converted in a manner to pull the packing assembly from the wellbore. Prior to the removal of the packing assembly from the wellbore, the wellbore fluid pressure is equalized across the packing assembly.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: March 19, 1991
    Assignee: Otis Engineering Corporation
    Inventors: Charles W. Pleasants, Pat M. White, Ronald J. Fischer, Robert D. Harrison, Jr., John R. Setterberg, Jr.
  • Patent number: 4846270
    Abstract: A well tubing extension joint including a trash barrier. A top sub having an internal locking recess is connected on the upper end of a well packer mandrel. A trash barrier is connected on the lower end of an upper tubing string for releaseably engaging the top sub to permit the upper tubing string to move longitudinally relative to the packer and packer top sub. The trash barrier includes a body having locking collet fingers for releaseably locking the body in the top sub at the locking recess. The body has external rings seals for sealing with the top sub and an internal wiper seal for sealing with the upper tubing string extending through the body.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: July 11, 1989
    Assignee: Otis Engineering Corporation
    Inventors: John R. Setterberg, Jr., Robert D. Harrison, Jr.