Patents by Inventor Charles Borsos

Charles Borsos 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).

  • Pressure compensation and rotary seal system for measurement while drilling instrumentation
    Patent number: 8739897
    Abstract: A pressure compensation system for a wellbore instrument coupled to a drill string includes a shaft rotatably mounted with respect to an instrument housing. A lubrication chamber included in the instrument has at least one bearing for rotatably supporting the shaft. The lubrication chamber includes a face seal coupled on one face to the shaft and on another face to the housing. A pressure compensator establishes hydraulic communication between the lubrication chamber and the interior of the drill string. The compensator includes a barrier to fluid movement between the lubrication chamber and the interior of the drill string. The barrier enables pressure communication therebetween. The compensator includes a pressure communication port extending between the barrier and a portion of the shaft exposed to the interior of the drill string.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: June 3, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Richard E. Thorp, Raju M. Eason, Charles Borsos
  • PRESSURE COMPENSATION AND ROTARY SEAL SYSTEM FOR MEASUREMENT WHILE DRILLING INSTRUMENTATION
    Publication number: 20090133930
    Abstract: A pressure compensation system for a wellbore instrument coupled to a drill string includes a shaft rotatably mounted with respect to an instrument housing. A lubrication chamber included in the instrument has at least one bearing for rotatably supporting the shaft. The lubrication chamber includes a face seal coupled on one face to the shaft and on another face to the housing. A pressure compensator establishes hydraulic communication between the lubrication chamber and the interior of the drill string. The compensator includes a barrier to fluid movement between the lubrication chamber and the interior of the drill string. The barrier enables pressure communication therebetween. The compensator includes a pressure communication port extending between the barrier and a portion of the shaft exposed to the interior of the drill string.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 28, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Richard E. Thorp, Raju M. Eason, Charles Borsos