Patents by Inventor David R. Woodruff

David R. Woodruff 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: 10087701
    Abstract: A system and method is provided for a low profile rotating control device (LP-RCD) and its housing mounted on or integral with an annular blowout preventer seal, casing, or other housing. The LP-RCD and LP-RCD housing can fit within a limited space available on drilling rigs. An embodiment allows a LP-RCD to be removably disposed with a LP-RCD housing by rotating a bearing assembly rotating plate. A sealing element may be removably disposed with the LP-RCD bearing assembly by rotating a seal retainer ring. Alternatively, a sealing element may be removably disposed with the LP-RCD bearing assembly with a seal support member threadedly attached with the LP-RCD bearing assembly. The seal support member may be locked in position with a seal locking ring removably attached with threads with the LP-RCD bearing assembly over the seal support member. Spaced apart accumulators may be disposed radially outward of the bearings in the bearing assembly to provide self lubrication to the bearings.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: October 2, 2018
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Thomas F Bailey, James W. Chambers, Don M. Hannegan, David R. Woodruff
  • Publication number: 20150211319
    Abstract: A system and method is provided for a low profile rotating control device (LP-RCD) and its housing mounted on or integral with an annular blowout preventer seal, casing, or other housing. The LP-RCD and LP-RCD housing can fit within a limited space available on drilling rigs.
    Type: Application
    Filed: April 9, 2015
    Publication date: July 30, 2015
    Applicant: Weatherford/Lamb, Inc.
    Inventors: Don M. HANNEGAN, Thomas F. BAILEY, James W. CHAMBERS, David R. WOODRUFF, Simon J. HARRALL
  • Publication number: 20130009366
    Abstract: A system and method is provided for a law profile rotating control device (LP-RCD) and its housing mounted on or integral with an annular blowout preventer seal, casing, or other housing. The LP-RCD and LP-RCD housing can fit within a limited space available on drilling rigs.
    Type: Application
    Filed: September 15, 2012
    Publication date: January 10, 2013
    Applicant: Weatherford/Lamb, Inc.
    Inventors: Don M. Hannegan, Thomas F. Bailey, James W. Chambers, David R. Woodruff, Simon J. Harrall
  • Patent number: 8286734
    Abstract: A system and method are provided for a low profile rotating control device (LP-RCD) and its housing mounted on or integral with an annular blowout preventer seal, casing, or other housing. The outer diameter of the lateral outlet flange may be substantially the same as the height of the LP-RCD housing and bearing assembly after the bearing assembly is positioned with the LP-RCD housing. The sealing element may be aligned with the lateral outlet, and may be replaced from above. Different embodiments of attachment members for attaching the LP-RCD housing with a lower housing allow the LP-RCD housing to be rotated to align the lateral outlet with the drilling rig's existing line to mud pits or other locations. In one embodiment, the LP-RCD bearings are positioned radially inside the LP-RCD housing. In another embodiment, the LP-RCD bearings are positioned radially outside the LP-RCD housing. One embodiment allows rotation of the inserted tubular about multiple planes.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: October 16, 2012
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Don M. Hannegan, Thomas F. Bailey, James W. Chambers, David R. Woodruff, Simon J. Harrall
  • Publication number: 20090101411
    Abstract: A system and method is provided for a low profile rotating control device (LP-RCD) and its housing mounted on or integral with an annular blowout preventer seal, casing, or other housing. The LP-RCD and LP-RCD housing can fit within a limited space available on drilling rigs.
    Type: Application
    Filed: October 23, 2007
    Publication date: April 23, 2009
    Applicant: Weatherford/Lamb, Inc.
    Inventors: Don M. Hannegan, Thomas F. Bailey, James W. Chambers, David R. Woodruff, Simon J. Harrall