Patents by Inventor Jean C. Bourdon

Jean C. Bourdon 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).

  • Well drilling operation control procedure
    Patent number: 4886129
    Abstract: The invention relates to the control of rotary type oil drilling operations. During a drilling test in which the drill string is held against vertical motion at the surface, known as the "drill-off test", an exponential decrease as a function of time, in the weight applied to the drill bit (WOB) is noted as is a threshold where the value of WOB remains constant. From this test the drillability of the formation drilled, the bit wear and the actual value of the weight applied to the bit may be determined.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: December 12, 1989
    Assignee: Schlumberger Technology Corporation
    Inventor: Jean C. Bourdon