Patents by Inventor W. L. Medlin

W. L. Medlin 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 for determining induced fracture azimuth in formations surrounding a cased well
    Patent number: 4899319
    Abstract: An acoustic logging tool traverses a fluid-filled cased well with an asymmetric acoustic energy transducer. Pressure waves created in the well fluid by the transducer generate asymmetric tube waves in the well casing. At least one spaced-apart transducer receives these asymmetric tube waves after they have traveled directly to the receiver through the well casing. Changes in tube wave ampltiude as detected by the receiver are used to identify the azimuth and height of any fracture interval in the formation behind the well casing.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: February 6, 1990
    Assignee: Mobil Oil Corporation
    Inventor: W. L. Medlin
  • Method of shear wave porosity logging of a subsurface formation surrounding a cased well
    Patent number: 4843598
    Abstract: The porosity of a formation surrounding a cased well is determined from a shear wave log of the formation. Shear wave velocity is derived from the log and formation porosity is identified from a predetermined correlation between core-derived porosity for the type of formation traversed by the cased well and shear wave velocity.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: June 27, 1989
    Assignee: Mobil Oil Corporation
    Inventor: W. L. Medlin