Patents by Inventor Mike H. Johnson

Mike H. Johnson 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).

  • Method of extracting and testing a core from a subterranean formation
    Patent number: 6401840
    Abstract: A coring apparatus permitting the taking of a non-rotating core sample and testing of same, as by NMR, prior to breakage and ejection from the apparatus. A core barrel is suspended from a rotating outer sleeve by one or more bearing assemblies which permit the core barrel to remain stationary during rotation of the sleeve with attached core bit for cutting the core. A core test device is fixed with respect to the core barrel on the outside thereof to test the core as it proceeds through the barrel. The apparatus optionally includes a directional detecting device such as an inclinometer and a compact set of circumferentially-spaced steering arms for changing the direction of the apparatus during coring.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: June 11, 2002
    Assignee: Baker Hughes Incorporated
    Inventors: Arthur D. Hay, Mike H. Johnson, Volker Krueger
  • Steering device for bottomhole drilling assemblies
    Patent number: 6148933
    Abstract: A coring apparatus permitting the taking of a non-rotating core sample and testing of same, as by NMR, prior to breakage and ejection from the apparatus. A core barrel is suspended from a rotating outer sleeve by one or more bearing assemblies which permit the core barrel to remain stationary during rotation of the sleeve with attached core bit for cutting the core. A core test device is fixed with respect to the core barrel on the outside thereof to test the core as it proceeds through the barrel. The apparatus optionally includes a directional detecting device such as an inclinometer and a compact set of circumferentially-spaced steering arms for changing the direction of the apparatus during coring.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: November 21, 2000
    Assignee: Baker Hughes Incorporated
    Inventors: Arthur D. Hay, Mike H. Johnson, Volker Krueger
  • Downhole core sampling and testing apparatus
    Patent number: 5957221
    Abstract: A coring apparatus permitting the taking of a non-rotating core sample and testing of same, as by NMR, prior to breakage and ejection from the apparatus. A core barrel is suspended from a rotating outer sleeve by one or more bearing assemblies which permit the core barrel to remain stationary during rotation of the sleeve with attached core bit for cutting the core. A core test device is fixed with respect to the core barrel on the outside thereof to test the core as it proceeds through the barrel. The apparatus optionally includes a directional detecting device such as an inclinometer and a compact set of circumferentially-spaced steering arms for changing the direction of the apparatus during coring.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: September 28, 1999
    Assignee: Baker Hughes Incorporated
    Inventors: Arthur D. Hay, Mike H. Johnson, Volker Krueger