Patents by Inventor John David Rowatt

John David Rowatt 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: 7874366
    Abstract: To perform a cleanout operation in a wellbore, a cleaning tool having a coiled tubing and an electrical pump assembly is run into the wellbore. The electrical pump assembly that is located in the wellbore is activated. In response to fluid flow generated by the electrical pump assembly, removal of debris from the wellbore is caused by directing fluid containing the debris into the coiled tubing for delivery to an earth surface.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: January 25, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Marc Allcorn, Jing Hayes Chow, David Milton Eslinger, Matthew R. Hackworth, John David Rowatt, Thomas Allan
  • Publication number: 20100209265
    Abstract: Power and control logic configurations for gas well dewatering systems are provided. In one example, a reservoir is configured to contain hydraulic, lubricating fluid. An electric motor is configured to receive fluid from the reservoir for lubrication and a hydraulic pump powered by the electric motor is configured to receive fluid from the reservoir and pump the fluid into a hydraulic circuit. A positive displacement oscillating pump is powered by the hydraulic pump and configured to pump fluid from the reservoir to an outlet from the well. The electric motor and hydraulic pump receive the same fluid from the reservoir for lubrication and to create pressure in the hydraulic circuit, respectively.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Michael A. Dowling, Jason Kamphaus, Harryson Sukianto, Alain P. Dorel, John David Rowatt, Arthur I. Watson
  • Publication number: 20090277628
    Abstract: An electric submersible pump device having a pump; a motor, the motor being adjacent to the pump and having motor windings extending a first distance along the motor; a support member, the support member supporting the sensor and having a length so that the sensor is located the first distance downhole from a downhole distal end of the motor windings; the sensor device comprising at least one selected from the following: a temperature sensor, a flow-meter, a vibration sensor or a pressure sensor.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 12, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Arthur I. Watson, John A. Booker, Kenneth Armstrong, John David Rowatt
  • Patent number: 7469748
    Abstract: A technique is provided for pumping fluids in a subterranean wellbore. A submersible pumping system can be deployed in a wellbore for moving desired fluids within the wellbore. The pumping system energizes the desired fluid movement by reciprocating a working fluid between expandable members.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: December 30, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Murat Ocalan, John F. Benton, Michael H. Du, Jeffrey Miller, Arukumar Arumugam, Peter Julstrom, John David Rowatt, Allan D. Ross, Steven Dornak, Arthur I. Watson, Brigitte Finkiewicz
  • Publication number: 20080066920
    Abstract: To perform a cleanout operation in a wellbore, a cleaning tool having a coiled tubing and an electrical pump assembly is run into the wellbore. The electrical pump assembly that is located in the wellbore is activated. In response to fluid flow generated by the electrical pump assembly, removal of debris from the wellbore is caused by directing fluid containing the debris into the coiled tubing for delivery to an earth surface.
    Type: Application
    Filed: June 28, 2007
    Publication date: March 20, 2008
    Inventors: Marc Allcorn, Jing Hayes Chow, David Milton Eslinger, Matthew R. Hackworth, John David Rowatt, Thomas Allan
  • Patent number: 7188685
    Abstract: A bottom hole assembly is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has an upper section connected to the collar, a steering section, and a drill bit arranged for drilling the borehole attached to the steering section. The steering section is joined at a swivel with the upper section. The steering section is actively tilted about the swivel. A lower stabilizer is mounted upon the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: March 13, 2007
    Assignee: Schlumberge Technology Corporation
    Inventors: Geoff Downton, Steven James Hart, John David Rowatt
  • Publication number: 20030127252
    Abstract: A bottom hole assembly is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has integral drilling motor, an upper section connected to the collar, a steering section, and a drill bit arranged for drilling the borehole attached to the steering section. The steering section is joined at a swivel with the upper section. The steering section is actively tilted about the swivel. A lower stabilizer is mounted upon one of the upper section or the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 10, 2003
    Inventors: Geoff Downton , Steven James Hart , John David Rowatt
  • Publication number: 20030121702
    Abstract: A bottom hole assembly is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has an upper section connected to the collar, a steering section, and a drill bit arranged for drilling the borehole attached to the steering section. The steering section is joined at a swivel with the upper section. The steering section is actively tilted about the swivel. A lower stabilizer is mounted upon the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 3, 2003
    Inventors: Geoff Downton , Steven James Hart , John David Rowatt