Patents by Inventor David L. Copeland

David L. Copeland 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: 5507342
    Abstract: A method for repairing damaged sections of an oil well includes the use of a combination of two fluids, pumped simultaneously to allow treatment of a specific part of a portion of an oil producing zone. A first fluid is pumped down a coiled tubing and a second fluid is pumped down the annulus formed by the coiled tubing and the production tubing. Because of density differences in the two fluids, diversion is facilitated, treating the lower part of the pay zone with the first fluid and the second fluid to keep the first fluid away from the upper section of the open hole. The coiled tubing could be raised or lowered during this procedure to help ensure desired zone coverage.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: April 16, 1996
    Assignee: Mobil Oil Corporation
    Inventors: David L. Copeland, Alfred R. Jennings, Jr.