Patents by Inventor Homer A. Robertson

Homer A. Robertson 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).

  • Optimizing drilling performance using a selected drilling fluid
    Patent number: 7926588
    Abstract: To improve drilling performance, a drilling fluid is selected based on one or more criteria and to have at least one target characteristic. Drilling equipment is used to drill a wellbore, and the selected drilling fluid is provided into the wellbore during drilling with the drilling equipment. The at least one target characteristic of the drilling fluid includes an ability of the drilling fluid to penetrate into formation cuttings during drilling to weaken the formation cuttings.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: April 19, 2011
    Assignees: Terratek Inc., Baker Hughes, Inc.
    Inventors: Arnis Judzis, Alan D. Black, Sidney J. Green, Homer A. Robertson, Ronald G. Bland, David Alexander Curry, Leroy W. Ledgerwood, III
  • OPTIMIZING DRILLING PERFORMANCE USING A SELECTED DRILLING FLUID
    Publication number: 20090152007
    Abstract: To improve drilling performance, a drilling fluid is selected based on one or more criteria and to have at least one target characteristic. Drilling equipment is used to drill a wellbore, and the selected drilling fluid is provided into the wellbore during drilling with the drilling equipment. The at least one target characteristic of the drilling fluid includes an ability of the drilling fluid to penetrate into formation cuttings during drilling to weaken the formation cuttings.
    Type: Application
    Filed: December 17, 2008
    Publication date: June 18, 2009
    Applicants: TERRA TEK, INC., BAKER HUGHES, INC.
    Inventors: Arnis Judzis, Alan D. Black, Sidney J. Green, Homer A. Robertson, Ronald G. Bland, David Alexander Curry, Leroy W. Ledgerwood, III
  • Method and apparatus for analyzing drill cuttings
    Patent number: 5571962
    Abstract: A method and apparatus for identifying cuttings from a wellbore is disclosed. The cuttings can be identified by measuring emissions such as alpha, beta, or gamma particles which emanate from the cuttings. A continuous wellbore profile of the alpha or beta emissions can be constructed by measuring the emissions from cuttings taken from different locations in the wellbore, and by documenting such emissions. The effects of cuttings dispersion caused by differing particle sizes can be reduced by collecting cuttings of an intermediate size for analysis. The profile of the intermediate size cuttings can be compared with a well log to identify the original elevation of the cuttings within the wellbore.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: November 5, 1996
    Assignee: Core Holdings B.V.
    Inventors: Daniel T. Georgi, Homer A. Robertson, Mark S. Franks
  • Method for determining pore pressure and horizontal effective stress from overburden and effective vertical stresses
    Patent number: 4981037
    Abstract: The porosity-effective stress relationship, which is a fuction of lithology, is used to calculate total overburden stress, vertical effective stress, horizontal effective stress and pore pressure using well log data. The log data can be either real time data derived from measurement-while-drilling equipment or open hole wireline logging equipment.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: January 1, 1991
    Assignee: Baroid Technology, Inc.
    Inventors: Phil Holbrook, Homer A. Robertson, Michael L. Hauck