Patents by Inventor Derrick Winston Lewis

Derrick Winston Lewis 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).

  • FORMING A SUBSEA WELLBORE
    Publication number: 20170175466
    Abstract: A riserless subsea drilling system includes a tubular drilling string including a drilling bit; a rotating control device including a seal sealed to the drilling string; and a drilling fluid circuit that circulates drilling fluid from a supply line, through an annulus exterior the drilling string and below the rotating control device, through the drilling bit at a downhole end of the drilling string, and through the drilling string toward an uphole end of the drilling string.
    Type: Application
    Filed: February 15, 2015
    Publication date: June 22, 2017
    Inventors: Ron J. Dirksen, Derrick Winston Lewis, Isabel Cristina Letzky, Matthew H. Wiggins
  • Apparatus and method for well operations
    Patent number: 9279301
    Abstract: A method for modifying a return fluid in a wellbore comprises disposing at least one controllable flow restrictor along a drill string in the wellbore. At least one parameter of interest is determined at at least one location along an annulus in the wellbore. Controllably actuating the at least one flow restrictor to modify a local property of a return fluid in the annulus based at least in part on the measured parameter of interest.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 8, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: James Randolph Lovorn, Derrick Winston Lewis, Daniel David Gleitman, Michael John Strachan, Clive D Menezes
  • Apparatus and Method for Well Operations
    Publication number: 20130008648
    Abstract: A method for modifying a return fluid in a wellbore comprises disposing at least one controllable flow restrictor along a drill string in the wellbore. At least one parameter of interest is determined at at least one location along an annulus in the wellbore. Controllably actuating the at least one flow restrictor to modify a local property of a return fluid in the annulus based at least in part on the measured parameter of interest.
    Type: Application
    Filed: March 23, 2011
    Publication date: January 10, 2013
    Applicant: Halliburton Energy Services, Inc.
    Inventors: James Randolph Lovorn, Derrick Winston Lewis, Daniel David Gleitman, Michael John Strachan, Clive D. Menezes