Patents by Inventor James M. Macadam

James M. Macadam 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).

  • Patent number: 5355951
    Abstract: A method of evaluating a slurry mixing and placing process, such as a cementing process, for an oil or gas well comprises identifying and measuring specific subprocesses and parameters thereof, statistically summarizing the parameters and creating a database thereof, and analyzing the statistically summarized parameters to identify or compare against process capabilities to reduce variation, thereby improving specific job performance and the overall process.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: October 18, 1994
    Assignee: Halliburton Company
    Inventors: Thomas E. Allen, Gary D. Arnold, Leonard R. Case, Mark A. Clark, Gary E. Folmnsbee, Jerry L. Gammill, James M. Macadam, John M. Richardson, Freddie L. Sabins, Larry T. Watters
  • Patent number: 5351533
    Abstract: The present invention is an improved apparatus and method for measuring downhole flowing and shut-in pressures to determine the condition of the reservoir and the potential of the well as a stimulation candidate. The tool string of the present invention is a novel combination of existing equipment that allows an electronic pressure gauge and shut-in tool to be run into the hole with coiled tubing. The present invention, in most cases, solves the potential problem of having to shut in or kill a flowing well prior to and after performing pressure testing, preventing lost production or potential well damage due to the killing operation. In addition, the present invention provides accuracy over current coiled tubing systems by reducing the effects of wellbore storage on pressure build-up testing.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: October 4, 1994
    Assignee: Halliburton Company
    Inventors: James M. Macadam, Donald E. Bailey, Ronald E. Savage