Patents by Inventor William D. Moody

William D. Moody 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).

  • Selectively releasable and reengagable expansion joint for subterranean well tubing strings
    Patent number: 4778008
    Abstract: The invention provides an apparatus for limiting tension produced in a tubular string extending from a packer set in a subterranean well to the well surface. Such apparatus comprises a receptacle secured to the packer and defining an elongated seal bore, and a mandrel telescopically and sealably related to the seal bore, the mandrel being connected to the bottom end of the tubing string. In one embodiment, a collet, incorporated in the receptacle for cooperating with an abutment formed on the mandrel, thereby securing the mandrel and the receptacle in a telescopically contracted position until sufficient tensile force is exerted on the mandrel to cause the collet arms to be expanded by the abutment to permit upward movement of the mandrel relative to the receptacle.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: October 18, 1988
    Assignees: Exxon Production Research Company, Baker Oil Tools, Inc.
    Inventors: Manuel E. Gonzalez, William D. Moody, Richard P. Rubbo