Patents by Inventor John L. Leenerts

John L. Leenerts 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: 7225878
    Abstract: Apparatus and methods for producing fluids from a well and for controlling the production of fluids from multiple wells, particularly from a remote location. The well is provided with a winch/cable drum having a cable wound thereon with a swabbing tool on the end of the cable. The swabbing tool is initially located in a riser that is mounted to the wellhead and lowered into the well and down through the fluids in the well under control of a programmable logic controller (PLC 95). Upon reaching a pre-determined depth, the PLC 95 stops the rotation of the winch/cable drum and then reverses the direction of rotation to retrieve the swabbing tool, thereby lifting the fluids in the well bore up out of the well. Flowline connections, with appropriate valves, are provided in the riser for routing any gas and oil that is lifted from the well into pipelines and on to storage tanks or separators as the swabbing tool is retrieved.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: June 5, 2007
    Inventors: James R. Holcomb, John L. Leenerts
  • Publication number: 20040099417
    Abstract: Apparatus and methods for producing fluids from a well and for controlling the production of fluids from multiple wells, particularly from a remote location. The well is provided with a winch/cable drum having a cable wound thereon with a swabbing tool on the end of the cable. The swabbing tool is initially located in a riser that is mounted to the wellhead and lowered into the well and down through the fluids in the well under control of a programmable logic controller (PLC 95). Upon reaching a pre-determined depth, the PLC 95 stops the rotation of the winch/cable drum and then reverses the direction of rotation to retrieve the swabbing tool, thereby lifting the fluids in the well bore up out of the well. Flowline connections, with appropriate valves, are provided in the riser for routing any gas and oil that is lifted from the well into pipelines and on to storage tanks or separators as the swabbing tool is retrieved.
    Type: Application
    Filed: November 26, 2002
    Publication date: May 27, 2004
    Inventors: James R. Holcomb, John L. Leenerts