Patents by Inventor Philip E. DUFRENE

Philip E. DUFRENE 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).

  • Centralizer
    Patent number: 11085248
    Abstract: A centralizer sub for cementing a tubular string in a wellbore includes: a tubular body; a centralizer disposed along an outer surface of the body and having a pair of collars and a plurality of bow springs connecting the collars; and a joint longitudinally coupling the centralizer to the body. The joint has a groove formed in and around the body outer surface, and a plurality of protrusions formed integrally with or mounted to one of the collars and configured to mate with the groove.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: August 10, 2021
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Maxime R. Rodrigue, Philip E. Dufrene, Beau H. Martin, Christian Kiess, Martin Helms, Adam Kyzar
  • Low profile stop collar
    Patent number: 10538975
    Abstract: A stop collar for a tubular includes an inner ring configured to engage the tubular and having a waveform profile. The waveform profile includes a peak and a base. The stop collar includes an outer ring configured to be disposed around the inner ring and configured to compress the inner ring. A method for assembling a stop collar for a centralizer on a tubular includes positioning an inner ring around the tubular, the inner ring including a profile and compressing the profile against the tubular by disposing an outer ring around the inner ring.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: January 21, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Samuel Rodriguez, Forrest Parker, Maxime R. Rodrigue, Philip E. Dufrene, Vimalkumar Engineer, Sarah Adams
  • CENTRALIZER
    Publication number: 20190323300
    Abstract: A centralizer sub for cementing a tubular string in a wellbore includes: a tubular body; a centralizer disposed along an outer surface of the body and having a pair of collars and a plurality of bow springs connecting the collars; and a joint longitudinally coupling the centralizer to the body. The joint has a groove formed in and around the body outer surface, and a plurality of protrusions formed integrally with or mounted to one of the collars and configured to mate with the groove.
    Type: Application
    Filed: May 6, 2019
    Publication date: October 24, 2019
    Inventors: Maxime R. RODRIGUE, Philip E. DUFRENE, Beau H. MARTIN, Christian KIESS, Martin HELMS, Adam KYZAR
  • Centralizer
    Patent number: 10280695
    Abstract: A centralizer sub for cementing a tubular string in a wellbore includes: a tubular body; a centralizer disposed along an outer surface of the body and having a pair of collars and a plurality of bow springs connecting the collars; and a joint longitudinally linking the centralizer to the body. The joint has: a groove formed in and around the body outer surface, and a plurality of protrusions formed integrally with or mounted to one of the collars and extending into the groove.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: May 7, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Maxime R. Rodrigue, Philip E. Dufrene, Beau H. Martin, Christian Kiess, Martin Helms, Adam Kyzar
  • LOW PROFILE STOP COLLAR
    Publication number: 20180148982
    Abstract: A stop collar for a tubular includes an inner ring configured to engage the tubular and having a waveform profile. The waveform profile includes a peak and a base. The stop collar includes an outer ring configured to be disposed around the inner ring and configured to compress the inner ring. A method for assembling a stop collar for a centralizer on a tubular includes positioning an inner ring around the tubular, the inner ring including a profile and compressing the profile against the tubular by disposing an outer ring around the inner ring.
    Type: Application
    Filed: November 30, 2016
    Publication date: May 31, 2018
    Inventors: Samuel RODRIGUEZ, Forrest PARKER, Maxime R. RODRIGUE, Philip E. DUFRENE, Vimalkumar ENGINEER, Sarah ADAMS
  • CENTRALIZER
    Publication number: 20150376960
    Abstract: A centralizer sub for cementing a tubular string in a wellbore includes: a tubular body; a centralizer disposed along an outer surface of the body and having a pair of collars and a plurality of bow springs connecting the collars; and a joint longitudinally linking the centralizer to the body. The joint has: a groove formed in and around the body outer surface, and a plurality of protrusions formed integrally with or mounted to one of the collars and extending into the groove.
    Type: Application
    Filed: June 16, 2015
    Publication date: December 31, 2015
    Applicant: WEATHERFORD/LAMB, INC.
    Inventors: Maxime R. RODRIGUE, Philip E. DUFRENE, Beau H. MARTIN, Christian KIESS, Martin HELMS, Adam KYZAR