Patents by Inventor Robert Franklin Mitchell

Robert Franklin Mitchell 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).

  • Determining stresses in a pipe under non-uniform exterior loads
    Patent number: 10302526
    Abstract: Systems and methods for determining stresses in pipe under non-uniform exterior loads to test the pipe design for structural integrity by approximating non-uniform exterior loads on the pipe and performing a stress analysis of the pipe under the non-uniform exterior loading to determine the stresses in the pipe.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: May 28, 2019
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventor: Robert Franklin Mitchell
  • Systems and methods for the evaluation of passive pressure containment barriers
    Patent number: 10161239
    Abstract: Systems and methods for the advance, real-time and/or post-event evaluation of inaccessible passive pressure containment barriers using an iterative process.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: December 25, 2018
    Assignee: Landmark Graphics Corporation
    Inventors: Ronald Earl Sweatman, Robert Franklin Mitchell
  • System, method and computer program product to simulate the progressive failure of rupture disks in downhole environments
    Patent number: 9009014
    Abstract: Systems and related methods to simulate, predict, and report progressive failures of rupture disks in response to thermal expansion of trapped annular fluids.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: April 14, 2015
    Assignee: Landmark Graphics Corporation
    Inventor: Robert Franklin Mitchell
  • System, Method & Computer Program Product to Simulate the Progressive Failure of Rupture Disks in Downhole Environments
    Publication number: 20150088425
    Abstract: Systems and related methods to simulate, predict, and report progressive failures of rupture disks in response to thermal expansion of trapped annular fluids.
    Type: Application
    Filed: December 4, 2014
    Publication date: March 26, 2015
    Inventor: Robert Franklin Mitchell
  • System, method and computer program product to simulate rupture disk and syntactic foam trapped annular pressure mitigation in downhole environments
    Patent number: 8983819
    Abstract: Systems and related methods to simulate the use of rupture disks and syntactic foam in the mitigation of trapped annular pressure and wellhead movement during downhole operations.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: March 17, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jun Jiang, Max Orland Duncan, Robert Franklin Mitchell, Adolfo Camilo Gonzales
  • Systems and Methods for the Evaluation of Passive Pressure Containment Barriers
    Publication number: 20140290940
    Abstract: Systems and methods for the advance, real-time and/or post-event evaluation of inaccessible passive pressure containment barriers using an iterative process.
    Type: Application
    Filed: August 12, 2011
    Publication date: October 2, 2014
    Inventors: Ronald Earl Sweatman, Robert Franklin Mitchell
  • SYSTEM, METHOD & COMPUTER PROGRAM PRODUCT TO SIMULATE THE PROGRESSIVE FAILURE OF RUPTURE DISKS IN DOWNHOLE ENVIRONMENTS
    Publication number: 20140019102
    Abstract: Systems and related methods to simulate, predict, and report progressive failures of rupture disks in response to thermal expansion of trapped annular fluids.
    Type: Application
    Filed: July 11, 2012
    Publication date: January 16, 2014
    Applicant: Landmark Graphics Corporation
    Inventor: Robert Franklin Mitchell
  • SYSTEM, METHOD & COMPUTER PROGRAM PRODUCT TO SIMULATE RUPTURE DISK AND SYNTACTIC FOAM TRAPPED ANNULAR PRESSURE MITIGATION IN DOWNHOLE ENVIRONMENTS
    Publication number: 20140019107
    Abstract: Systems and related methods to simulate the use of rupture disks and syntactic foam in the mitigation of trapped annular pressure and wellhead movement during downhole operations.
    Type: Application
    Filed: July 11, 2012
    Publication date: January 16, 2014
    Applicant: Landmark Graphics Corporation
    Inventors: Jun Jiang, Max Orland Duncan, Robert Franklin Mitchell, Adolfo Camilo Gonzales
  • Systems and Methods for Modeling Drillstring Trajectories
    Publication number: 20130151217
    Abstract: Systems and methods for modeling drillstring trajectories by calculating forces in the drillstring using a traditional torque-drag model and comparing the results with the results of the same forces calculated in the drillstring using a block tri-diagonal matrix, which determines whether the new drillstring trajectory is acceptable and represents mechanical equilibrium of drillstring forces and moments.
    Type: Application
    Filed: February 8, 2013
    Publication date: June 13, 2013
    Applicant: Landmark Graphics Corporation
    Inventor: Robert Franklin Mitchell
  • Systems And Methods For Modeling Drillstring Trajectories
    Publication number: 20120116738
    Abstract: Systems and methods for modeling drillstring trajectories by calculating forces in the drillstring using a traditional torque-drag model and comparing the results with the results of the same forces calculated in the drillstring using a block tri-diagonal matrix, which determines whether the new drillstring trajectory is acceptable and represents mechanical equilibrium of drillstring forces and moments.
    Type: Application
    Filed: July 10, 2009
    Publication date: May 10, 2012
    Applicant: Landmark Graphics Corporation
    Inventor: Robert Franklin Mitchell