Patents by Inventor Thomas J. Lasseter

Thomas J. Lasseter 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 and apparatus for determining hydraulic properties of formations surrounding a borehole
    Patent number: 4742459
    Abstract: A method and apparatus are disclosed for determining hydraulic properties of formations surrounding a borehole. In one embodiment, trial values of hydraulic properties such as vertical and horizontal permeability are selected and used to obtain computed formation pressure responses that are compared to measured pressure responses taken at a source and two observation probe positions. Trial values can then be modified to bring the computed pressure responses closer to the measured ones. An improved technique is also disclosed for obtaining the computed pressure responses.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: May 3, 1988
    Assignee: Schlumber Technology Corp.
    Inventor: Thomas J. Lasseter