Patents by Inventor John O. Wambaugh

John O. Wambaugh 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: 4554973
    Abstract: A method and apparatus for sealing a well casing, when a length of production tubing is disposed within the well casing, utilizes a sealing means having a first diameter less than the diameter of the production tubing, and the sealing means is compressible to a second diameter which sealingly conforms to the diameter of the well casing, to prevent fluids disposed in the well casing below the sealing means from flowing through the well casing to above the sealing means.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: November 26, 1985
    Assignee: Schlumberger Technology Corporation
    Inventors: Clinton O. Shonrock, John O. Wambaugh
  • Patent number: 4545433
    Abstract: A reinforcing element for an elastomeric sealing element for use within a well casing and passable through production tubing is formed of two metallic plate members having a plurality of radially extending projections, and the radially extending projections are bent and joined to one another to allow the reinforcing element to be passed through production tubing. A demand sensitive pressure intensifier for use with a hydraulic fluid pump and passable through production tubing has a means for compressing hydraulic fluid to a pressure which exceeds the maximum output pressure of the pump, and the compression means is selectively actuated when the output pressure of the pump reaches a predetermined pressure value.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: October 8, 1985
    Assignee: Schlumberger Technology Corporation
    Inventor: John O. Wambaugh
  • Patent number: RE32831
    Abstract: A method and apparatus for sealing a well casing, when a length of production tubing is disposed within the well casing, utilizes a sealing means having a first diameter less than the diameter of the production tubing, and the sealing means is compressible to a second diameter which sealingly conforms to the diameter of the well casing, to prevent fluids disposed in the well casing below the sealing means from flowing through the well casing to above the sealing means. .Iadd.To support the sealing means when it has been sealingly conformed to the diameter of the well casing, the well bore apparatus of the invention further includes upper and lower sets of opposed reinforcing members which are mounted on the body of the well bore apparatus above and below the sealing means and operatively arranged to be respectively swung outwardly from the body to an extended position for supporting the upper and lower end portions of the sealing means against longitudinal movement in the well casing. .Iaddend.
    Type: Grant
    Filed: April 26, 1987
    Date of Patent: January 17, 1989
    Assignee: Schlumberger Technology Corporation
    Inventors: Clinton O. Shonrock, John O. Wambaugh, Joachim A. Hoppe