Patents Represented by Attorney, Agent or Law Firm Briditte L. Jeffery
  • Formation testing instrument having extensible housing
    Patent number: 6655458
    Abstract: A well logging instrument is disclosed which includes a housing operatively coupled to a well logging conveyance and movable within the wellbore. The housing has therein a formation testing system and an axial extension mechanism. The axial extension mechanism controllably extends and retracts to allow the formation testing system to perform tests and take samples in an axially fixed position in the wellbore while the housing moves through the wellbore.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: December 2, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Andrew L. Kurkjian, John B. Elmer, William B. Underhill