Patents by Inventor Gerald M. Ferguson

Gerald M. Ferguson 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 drilling and completing multiple wellbores inside a single caisson
    Patent number: 7264067
    Abstract: A method and apparatus for drilling and completing multiple wellbores from a single drilling rig and from within a single wellhead is provided. In one embodiment, a template is disposed at a predetermined location downhole within a casing. In one aspect, a first casing string is lowered with the template to the predetermined location and disposed within a first wellbore. A second wellbore may be drilled through a bore in the template. A second casing string may then be lowered through the bore into the second wellbore. In another embodiment, at least two wellbores are drilled and completed from a surface casing having a crossover portion.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: September 4, 2007
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Mark C. Glaser, Jack R. Allen, Gerald M. Ferguson, Ralph A. Alvarez