Patents by Inventor Stephen C. Hain

Stephen C. Hain 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).

  • Downhole hole cleaning joints and method of using same
    Patent number: 11047180
    Abstract: A hole cleaning joint for a drill string is deployed into a wellbore penetrating a subterranean formation. The hole cleaning joint includes a tubular body connectable to the drill string and a hole cleaning section positionable about the tubular body. The hole cleaning section has an outer surface engageable with a wall of the well bore. The outer surface has spiral grooves extending therein defining blades therebetween, and an uphole end and a downhole end with a spiral cavity therebetween. The spiral cavity has a width that decreases towards the uphole end of the spiral cavity to define a tapered flow channel to receive cuttings therethrough whereby uphole movement of cuttings is facilitated during drilling.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: June 29, 2021
    Assignee: National Oilwell Varco, L.P.
    Inventors: Michael Joseph Jellison, Guillaume Plessis, Andrei Muradov, John Forester Price, Stephen C. Hain
  • DOWNHOLE HOLE CLEANING JOINTS AND METHOD OF USING SAME
    Publication number: 20160237764
    Abstract: A hole cleaning joint for a drill string is deployed into a wellbore penetrating a subterranean formation. The hole cleaning joint includes a tubular body connectable to the drill string and a hole cleaning section positionable about the tubular body. The hole cleaning section has an outer surface engageable with a wall of the well bore. The outer surface has spiral grooves extending therein defining blades therebetween, and an uphole end and a downhole end with a spiral cavity therebetween. The spiral cavity has a width that decreases towards the uphole end of the spiral cavity to define a tapered flow channel to receive cuttings therethrough whereby uphole movement of cuttings is facilitated during drilling.
    Type: Application
    Filed: October 22, 2014
    Publication date: August 18, 2016
    Inventors: Michael Joseph Jellison, Guillaume Plessis, Andrei Muradov, John Forester Price, Stephen C. Hain