Patents by Inventor Terry L. McCafferty

Terry L. McCafferty 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: 6273188
    Abstract: A trailer (10) has a dropped center section (12) defining a well (16) for a coiled tubing reel (22). A mast (30) has a pair of posts (34) on which a carriage (32) is mounted for movement along posts (34). An injector head (36) is supported on carriage (32) for pivotal movement in a vertical plane relative to mast (30) and for horizontal movement along a tubular support member (38) of carriage (32) relative to mast (30). Mast (30) is pivotally mounted on the rear end of trailer (10) for movement away from trailer (10) for positioning over a wellhead. In a stored position, mast posts (34) fit alongside the ends of reel (22) so that to the total height of the stored coiled tubing rig is no more than 13½ feet for over the road travel.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: August 14, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: Terry L. McCafferty, Joseph K. Flowers, Matthew E. Wilson, Rod W. Shampine, Larry D. Welch
  • Patent number: 6264128
    Abstract: A levelwind system for a coiled tubing reel (26) including an arcuate guide arm (48) extending over the upper surface of the reel (26). A universal joint (50) mounts the lower end of the arm (48) for pivotal movement both vertically and horizontally. A guide member (52) is supported on the free end of the guide arm (48) for guiding the coiled tubing T on and off reel (26). A lift cylinder (54) is effective to raise and lower guide arm (48). A balancing cylinder (60) is effective for moving guide arm ME (48) laterally. A hydraulic fluid circuit responsive to a position sensor (111) and a microprocessor (112) as shown in FIG. 12 is effective for controlling the movement of the coiled tubing guide arm (48).
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: July 24, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: Rod W. Shampine, L. Michael McKee, Joseph K. Flowers, Larry D. Welch, Terry L. McCafferty
  • Patent number: D442891
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: May 29, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: Terry L. McCafferty, Joseph K. Flowers
  • Patent number: D443560
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: June 12, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: Terry L. McCafferty, Joseph K. Flowers, Matthew E. Wilson
  • Patent number: D483299
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: December 9, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Terry L. McCafferty, Joseph K. Flowers, Matthew E. Wilson